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Diffstat (limited to 'gas/config/tc-m68kmote.c')
| -rw-r--r-- | gas/config/tc-m68kmote.c | 4519 |
1 files changed, 0 insertions, 4519 deletions
diff --git a/gas/config/tc-m68kmote.c b/gas/config/tc-m68kmote.c deleted file mode 100644 index d8e93b07b4..0000000000 --- a/gas/config/tc-m68kmote.c +++ /dev/null @@ -1,4519 +0,0 @@ -/* tc-m68kmote.c All the m68020 specific stuff in one convenient, huge, - slow to compile, easy to find file. - Copyright (C) 1987, 1991, 1992 Free Software Foundation, Inc. - - This file is part of GAS, the GNU Assembler. - - GAS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - GAS is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with GAS; see the file COPYING. If not, write to - the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#define MRI -#include <ctype.h> - -#include "as.h" -#include "bfd.h" -#include "obstack.h" - -/* note that this file includes real declarations and thus can only be included by one source file per executable. */ -#include "opcode/m68k.h" -#ifdef TE_SUN -/* This variable contains the value to write out at the beginning of - the a.out file. The 2<<16 means that this is a 68020 file instead - of an old-style 68000 file */ - -long omagic = 2<<16|OMAGIC; /* Magic byte for header file */ -#else -long omagic = OMAGIC; -#endif - -/* This array holds the chars that always start a comment. If the - pre-processor is disabled, these aren't very useful */ -const char comment_chars[] = "|"; - -/* This array holds the chars that only start a comment at the beginning of - a line. If the line seems to have the form '# 123 filename' - .line and .file directives will appear in the pre-processed output */ -/* Note that input_file.c hand checks for '#' at the beginning of the - first line of the input file. This is because the compiler outputs - #NO_APP at the beginning of its output. */ -/* Also note that comments like this one will always work. */ -#ifdef MRI -const char line_comment_chars[] = "*"; -#else -const char line_comment_chars[] = "#"; -#endif - -#define NO_RELOC 0 - -/* Chars that can be used to separate mant from exp in floating point nums */ -const char EXP_CHARS[] = "eE"; - -/* Chars that mean this number is a floating point constant */ -/* As in 0f12.456 */ -/* or 0d1.2345e12 */ - -const char FLT_CHARS[] = "rRsSfFdDxXeEpP"; - -/* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be - changed in read.c . Ideally it shouldn't have to know about it at all, - but nothing is ideal around here. - */ - -int md_reloc_size = 8; /* Size of relocation record */ - -/* Its an arbitrary name: This means I don't approve of it */ -/* See flames below */ -static struct obstack robyn; - -#define TAB(x,y) (((x)<<2)+(y)) -#define TABTYPE(xy) ((xy) >> 2) -#define BYTE 0 -#define SHORT 1 -#define LONG 2 -#define SZ_UNDEF 3 - -#define BRANCH 1 -#define FBRANCH 2 -#define PCREL 3 -#define BCC68000 4 -#define DBCC 5 -#define PCLEA 6 - -/* Operands we can parse: (And associated modes) - - numb: 8 bit num - numw: 16 bit num - numl: 32 bit num - dreg: data reg 0-7 - reg: address or data register - areg: address register - apc: address register, PC, ZPC or empty string - num: 16 or 32 bit num - num2: like num - sz: w or l if omitted, l assumed - scale: 1 2 4 or 8 if omitted, 1 assumed - - 7.4 IMMED #num --> NUM - 0.? DREG dreg --> dreg - 1.? AREG areg --> areg - 2.? AINDR areg@ --> *(areg) - 3.? AINC areg@+ --> *(areg++) - 4.? ADEC areg@- --> *(--areg) - 5.? AOFF apc@(numw) --> *(apc+numw) -- empty string and ZPC not allowed here - 6.? AINDX apc@(num,reg:sz:scale) --> *(apc+num+reg*scale) - 6.? AINDX apc@(reg:sz:scale) --> same, with num=0 - 6.? APODX apc@(num)@(num2,reg:sz:scale) --> *(*(apc+num)+num2+reg*scale) - 6.? APODX apc@(num)@(reg:sz:scale) --> same, with num2=0 - 6.? AMIND apc@(num)@(num2) --> *(*(apc+num)+num2) (previous mode without an index reg) - 6.? APRDX apc@(num,reg:sz:scale)@(num2) --> *(*(apc+num+reg*scale)+num2) - 6.? APRDX apc@(reg:sz:scale)@(num2) --> same, with num=0 - 7.0 ABSL num:sz --> *(num) - num --> *(num) (sz L assumed) - *** MSCR otherreg --> Magic - With -l option - 5.? AOFF apc@(num) --> *(apc+num) -- empty string and ZPC not allowed here still - ?.? DINDR dreg@ --> (dreg) -- cas2 only - - examples: - #foo #0x35 #12 - d2 - a4 - a3@ - a5@+ - a6@- - a2@(12) pc@(14) - a1@(5,d2:w:1) @(45,d6:l:4) - pc@(a2) @(d4) - etc . . . - - - #name@(numw) -->turn into PC rel mode - apc@(num8,reg:sz:scale) --> *(apc+num8+reg*scale) - - */ - -enum operand_type { - IMMED = 1, - DREG, - AREG, - AINDR, - ADEC, - AINC, - AOFF, - AINDX, - APODX, - AMIND, - APRDX, - ABSL, - MSCR, - REGLST, - DINDR -}; - - -struct m68k_exp { - char *e_beg; - char *e_end; - expressionS e_exp; - short e_siz; /* 0== default 1==short/byte 2==word 3==long */ -}; - -/* DATA and ADDR have to be contiguous, so that reg-DATA gives 0-7==data reg, - 8-15==addr reg for operands that take both types */ - -enum _register { - DATA = 1, /* 1- 8 == data registers 0-7 */ - DATA0 = DATA, - DATA1, - DATA2, - DATA3, - DATA4, - DATA5, - DATA6, - DATA7, - - ADDR, - ADDR0 = ADDR, - ADDR1, - ADDR2, - ADDR3, - ADDR4, - ADDR5, - ADDR6, - ADDR7, - - /* Note that COPNUM==processor #1 -- COPNUM+7==#8, which stores as 000 */ - /* I think. . . */ - - SP = ADDR7, - - FPREG, /* Eight FP registers */ - FP0 = FPREG, - FP1, - FP2, - FP3, - FP4, - FP5, - FP6, - FP7, - COPNUM = (FPREG+8), /* Co-processor #1-#8 */ - COP0 = COPNUM, - COP1, - COP2, - COP3, - COP4, - COP5, - COP6, - COP7, - PC, /* Program counter */ - ZPC, /* Hack for Program space, but 0 addressing */ - SR, /* Status Reg */ - CCR, /* Condition code Reg */ - - /* These have to be in order for the movec instruction to work. */ - USP, /* User Stack Pointer */ - ISP, /* Interrupt stack pointer */ - SFC, - DFC, - CACR, - VBR, - CAAR, - MSP, - ITT0, - ITT1, - DTT0, - DTT1, - MMUSR, - TC, - SRP, - URP, - /* end of movec ordering constraints */ - - FPI, - FPS, - FPC, - - DRP, - CRP, - CAL, - VAL, - SCC, - AC, - BAD, - BAD0 = BAD, - BAD1, - BAD2, - BAD3, - BAD4, - BAD5, - BAD6, - BAD7, - BAC, - BAC0 = BAC, - BAC1, - BAC2, - BAC3, - BAC4, - BAC5, - BAC6, - BAC7, - PSR, - PCSR, - - IC, /* instruction cache token */ - DC, /* data cache token */ - NC, /* no cache token */ - BC, /* both caches token */ - -}; - -/* Internal form of an operand. */ -struct m68k_op { - char *error; /* Couldn't parse it */ - enum operand_type mode; /* What mode this instruction is in. */ - enum _register reg; /* Base register */ - struct m68k_exp *con1; - int ireg; /* Index register */ - int isiz; /* 0==unspec 1==byte(?) 2==short 3==long */ - int imul; /* Multipy ireg by this (1,2,4,or 8) */ - struct m68k_exp *con2; -}; - -/* internal form of a 68020 instruction */ -struct m68k_it { - char *error; - char *args; /* list of opcode info */ - int numargs; - - int numo; /* Number of shorts in opcode */ - short opcode[11]; - - struct m68k_op operands[6]; - - int nexp; /* number of exprs in use */ - struct m68k_exp exprs[4]; - - int nfrag; /* Number of frags we have to produce */ - struct { - int fragoff; /* Where in the current opcode[] the frag ends */ - symbolS *fadd; - long foff; - int fragty; - } fragb[4]; - - int nrel; /* Num of reloc strucs in use */ - struct { - int n; - symbolS *add, - *sub; - long off; - char wid; - char pcrel; - } reloc[5]; /* Five is enough??? */ -}; - -#define cpu_of_arch(x) ((x) & m68000up) -#define float_of_arch(x) ((x) & mfloat) -#define mmu_of_arch(x) ((x) & mmmu) - -static struct m68k_it the_ins; /* the instruction being assembled */ - -/* Macros for adding things to the m68k_it struct */ - -#define addword(w) the_ins.opcode[the_ins.numo++]=(w) - -/* Like addword, but goes BEFORE general operands */ -#define insop(w) {int z;\ - for(z=the_ins.numo;z>opcode->m_codenum;--z)\ - the_ins.opcode[z]=the_ins.opcode[z-1];\ - for(z=0;z<the_ins.nrel;z++)\ - the_ins.reloc[z].n+=2;\ - the_ins.opcode[opcode->m_codenum]=w;\ - the_ins.numo++;\ - } - - -#define add_exp(beg,end) (\ - the_ins.exprs[the_ins.nexp].e_beg=beg,\ - the_ins.exprs[the_ins.nexp].e_end=end,\ - &the_ins.exprs[the_ins.nexp++]\ - ) - - -/* The numo+1 kludge is so we can hit the low order byte of the prev word. Blecch*/ -#define add_fix(width,exp,pc_rel) {\ - the_ins.reloc[the_ins.nrel].n= ((width)=='B') ? (the_ins.numo*2-1) : \ - (((width)=='b') ? ((the_ins.numo-1)*2) : (the_ins.numo*2));\ - the_ins.reloc[the_ins.nrel].add=adds((exp));\ - the_ins.reloc[the_ins.nrel].sub=subs((exp));\ - the_ins.reloc[the_ins.nrel].off=offs((exp));\ - the_ins.reloc[the_ins.nrel].wid=width;\ - the_ins.reloc[the_ins.nrel++].pcrel=pc_rel;\ - } - -#define add_frag(add,off,type) {\ - the_ins.fragb[the_ins.nfrag].fragoff=the_ins.numo;\ - the_ins.fragb[the_ins.nfrag].fadd=add;\ - the_ins.fragb[the_ins.nfrag].foff=off;\ - the_ins.fragb[the_ins.nfrag++].fragty=type;\ - } - -#define isvar(exp) ((exp) && (adds(exp) || subs(exp))) - -#define seg(exp) ((exp)->e_exp.X_seg) -#define adds(exp) ((exp)->e_exp.X_add_symbol) -#define subs(exp) ((exp)->e_exp.X_subtract_symbol) -#define offs(exp) ((exp)->e_exp.X_add_number) - - -struct m68k_incant { - char *m_operands; - unsigned long m_opcode; - short m_opnum; - short m_codenum; - enum m68k_architecture m_arch; - struct m68k_incant *m_next; -}; - -#define getone(x) ((((x)->m_opcode)>>16)&0xffff) -#define gettwo(x) (((x)->m_opcode)&0xffff) - - -#if __STDC__ == 1 - -static char *crack_operand(char *str, struct m68k_op *opP); -static int get_num(struct m68k_exp *exp, int ok); -static int get_regs(int i, char *str, struct m68k_op *opP); -static int reverse_16_bits(int in); -static int reverse_8_bits(int in); -static int try_index(char **s, struct m68k_op *opP); -static void install_gen_operand(int mode, int val); -static void install_operand(int mode, int val); -static void s_bss(void); -static void s_data1(void); -static void s_data2(void); -static void s_even(void); -static void s_proc(void); - -#else /* not __STDC__ */ - -static char *crack_operand(); -static int get_num(); -static int get_regs(); -static int reverse_16_bits(); -static int reverse_8_bits(); -static int try_index(); -static void install_gen_operand(); -static void install_operand(); -static void s_bss(); -static void s_data1(); -static void s_data2(); -static void s_even(); -static void s_proc(); - -#endif /* not __STDC__ */ - -static enum m68k_architecture current_architecture = _m68k_undef; - -/* BCC68000 is for patching in an extra jmp instruction for long offsets - on the 68000. The 68000 doesn't support long branches with branchs */ - -/* This table desribes how you change sizes for the various types of variable - size expressions. This version only supports two kinds. */ - -/* Note that calls to frag_var need to specify the maximum expansion needed */ -/* This is currently 10 bytes for DBCC */ - -/* The fields are: - How far Forward this mode will reach: - How far Backward this mode will reach: - How many bytes this mode will add to the size of the frag - Which mode to go to if the offset won't fit in this one - */ -const relax_typeS - md_relax_table[] = { - { 1, 1, 0, 0 }, /* First entries aren't used */ - { 1, 1, 0, 0 }, /* For no good reason except */ - { 1, 1, 0, 0 }, /* that the VAX doesn't either */ - { 1, 1, 0, 0 }, - - { (127), (-128), 0, TAB(BRANCH,SHORT)}, - { (32767), (-32768), 2, TAB(BRANCH,LONG) }, - { 0, 0, 4, 0 }, - { 1, 1, 0, 0 }, - - { 1, 1, 0, 0 }, /* FBRANCH doesn't come BYTE */ - { (32767), (-32768), 2, TAB(FBRANCH,LONG)}, - { 0, 0, 4, 0 }, - { 1, 1, 0, 0 }, - - { 1, 1, 0, 0 }, /* PCREL doesn't come BYTE */ - { (32767), (-32768), 2, TAB(PCREL,LONG)}, - { 0, 0, 4, 0 }, - { 1, 1, 0, 0 }, - - { (127), (-128), 0, TAB(BCC68000,SHORT)}, - { (32767), (-32768), 2, TAB(BCC68000,LONG) }, - { 0, 0, 6, 0 }, /* jmp long space */ - { 1, 1, 0, 0 }, - - { 1, 1, 0, 0 }, /* DBCC doesn't come BYTE */ - { (32767), (-32768), 2, TAB(DBCC,LONG) }, - { 0, 0, 10, 0 }, /* bra/jmp long space */ - { 1, 1, 0, 0 }, - - { 1, 1, 0, 0 }, /* PCLEA doesn't come BYTE */ - { 32767, -32768, 2, TAB(PCLEA,LONG) }, - { 0, 0, 6, 0 }, - { 1, 1, 0, 0 }, - - }; - -/* These are the machine dependent pseudo-ops. These are included so - the assembler can work on the output from the SUN C compiler, which - generates these. - */ - -/* This table describes all the machine specific pseudo-ops the assembler - has to support. The fields are: - pseudo-op name without dot - function to call to execute this pseudo-op - Integer arg to pass to the function - */ -#ifdef MRI - -void cons(); -void s_sect(); -void float_cons(); -void s_align_bytes(); -void s_chip(); -void s_ds(); -void s_dcb(); -void s_dc(); -const pseudo_typeS md_pseudo_table[] = { - { "xdef", s_globl, 0 }, - { "sect", s_sect, 0 }, - { "dc", s_dc, 2 }, - { "dc.d", float_cons, 'd' }, - { "dc.s", float_cons, 'f' }, - { "dc.l", s_dc, 4 }, - { "dc.w", s_dc, 2 }, - { "dc.b", s_dc, 1 }, - { "comline", s_ds, 1 }, - { "ds.b", s_ds, 1 }, - { "ds.w", s_ds, 2 }, - { "ds", s_ds, 2 }, - { "ds.l", s_ds, 4 }, - { "ds.d", s_ds, 8 }, - { "ds.s", s_ds, 4 }, - { "dcb", s_dcb, 2 }, - { "dcb.b", s_dcb, 1 }, - { "dcb.w", s_dcb, 2 }, - { "dcb.l", s_dcb, 4 }, - { "xcom", s_comm, 0 }, - { "align", s_align_bytes, 0 }, - { "chip", s_chip, 0 }, - { 0, 0, 0 } -}; -#else - -const pseudo_typeS md_pseudo_table[] = { - { "data1", s_data1, 0 }, - { "data2", s_data2, 0 }, - { "bss", s_bss, 0 }, - { "even", s_even, 0 }, - { "skip", s_space, 0 }, - { "proc", s_proc, 0 }, - { 0, 0, 0 } -} - - - - -#endif - -/* #define isbyte(x) ((x)>=-128 && (x)<=127) */ -/* #define isword(x) ((x)>=-32768 && (x)<=32767) */ - -#define issbyte(x) ((x)>=-128 && (x)<=127) -#define isubyte(x) ((x)>=0 && (x)<=255) -#define issword(x) ((x)>=-32768 && (x)<=32767) -#define isuword(x) ((x)>=0 && (x)<=65535) - -#define isbyte(x) ((x)>=-128 && (x)<=255) -#define isword(x) ((x)>=-32768 && (x)<=65535) -#define islong(x) (1) - -extern char *input_line_pointer; - -enum { - FAIL = 0, - OK = 1, -}; - -/* JF these tables here are for speed at the expense of size */ -/* You can replace them with the #if 0 versions if you really - need space and don't mind it running a bit slower */ - -static char mklower_table[256]; -#define mklower(c) (mklower_table[(unsigned char)(c)]) -static char notend_table[256]; -static char alt_notend_table[256]; -#define notend(s) ( !(notend_table[(unsigned char)(*s)] || (*s==':' &&\ - alt_notend_table[(unsigned char)(s[1])]))) - -#if 0 -#define mklower(c) (isupper(c) ? tolower(c) : c) -#endif - -#define ISSPACE(x) ((x) == ' ' || (x) == '\t') -#ifdef MRI -#define MULTIPLIER '*' -#define SIZER '.' -#else -#define MULTIPLIER ':' -#define SIZER ':' -#endif - - -/* JF modified this to handle cases where the first part of a symbol name - looks like a register */ - -/* - * m68k_reg_parse() := if it looks like a register, return it's token & - * advance the pointer. - */ - -enum _register m68k_reg_parse(ccp) -register char **ccp; -{ -#ifndef MAX_REG_NAME_LEN -#define MAX_REG_NAME_LEN (6) -#endif /* MAX_REG_NAME_LEN */ - register char c[MAX_REG_NAME_LEN]; - char *p, *q; - register int n = 0, - ret = FAIL; - - c[0] = mklower(ccp[0][0]); -#ifdef REGISTER_PREFIX - if (c[0] != REGISTER_PREFIX) { - return(FAIL); - } /* need prefix */ -#endif - - for (p = c, q = ccp[0]; p < c + MAX_REG_NAME_LEN; ++p, ++q) - { - if (*q == 0) - { - *p = 0; - break; - } - else - *p = mklower(*q); - } /* downcase */ - - switch(c[0]) { - case 'a': - if(c[1]>='0' && c[1]<='7') { - n=2; - ret=ADDR+c[1]-'0'; - } -#ifndef NO_68851 - else if (c[1] == 'c') { - n = 2; - ret = AC; - } -#endif - break; -#ifndef NO_68851 - case 'b': - if (c[1] == 'a') { - if (c[2] == 'd') { - if (c[3] >= '0' && c[3] <= '7') { - n = 4; - ret = BAD + c[3] - '0'; - } - } /* BAD */ - if (c[2] == 'c') { - if (c[3] >= '0' && c[3] <= '7') { - n = 4; - ret = BAC + c[3] - '0'; - } - } /* BAC */ - } else if (c[1] == 'c') { - n = 2; - ret = BC; - } /* BC */ - break; -#endif - case 'c': -#ifndef NO_68851 - if (c[1] == 'a' && c[2] == 'l') { - n = 3; - ret = CAL; - } else -#endif - /* This supports both CCR and CC as the ccr reg. */ - if(c[1]=='c' && c[2]=='r') { - n=3; - ret = CCR; - } else if(c[1]=='c') { - n=2; - ret = CCR; - } else if(c[1]=='a' && (c[2]=='a' || c[2]=='c') && c[3]=='r') { - n=4; - ret = c[2]=='a' ? CAAR : CACR; - } -#ifndef NO_68851 - else if (c[1] == 'r' && c[2] == 'p') { - n = 3; - ret = (CRP); - } -#endif - break; - case 'd': - if (c[1] >= '0' && c[1] <= '7') { - n = 2; - ret = DATA + c[1] - '0'; - } else if (c[1] == 'f' && c[2] == 'c') { - n = 3; - ret = DFC; - } else if (c[1] == 'c') { - n = 2; - ret = DC; - } else if (c[1] == 't' && c[2] == 't') { - if ('0' <= c[3] && c[3] <= '1') { - n = 4; - ret = DTT0 + (c[3] - '0'); - } /* DTT[01] */ - } -#ifndef NO_68851 - else if (c[1] == 'r' && c[2] == 'p') { - n = 3; - ret = (DRP); - } -#endif - break; - case 'f': - if(c[1]=='p') { - if(c[2]>='0' && c[2]<='7') { - n=3; - ret = FPREG+c[2]-'0'; - if(c[3]==':') - ccp[0][3]=','; - } else if(c[2]=='i') { - n=3; - ret = FPI; - } else if(c[2]=='s') { - n= (c[3] == 'r' ? 4 : 3); - ret = FPS; - } else if(c[2]=='c') { - n= (c[3] == 'r' ? 4 : 3); - ret = FPC; - } else if (!isalpha(c[2]) && !isdigit(c[2])) { - n = 2; - ret = ADDR + 6; - } - - - } - break; - case 'i': - if (c[1] == 's' && c[2] == 'p') { - n = 3; - ret = ISP; - } else if (c[1] == 'c') { - n = 2; - ret = IC; - } else if (c[1] == 't' && c[2] == 't') { - if ('0' <= c[3] && c[3] <= '1') { - n = 4; - ret = ITT0 + (c[3] - '0'); - } /* ITT[01] */ - } - break; - case 'm': - if (c[1] == 's' && c[2] == 'p') { - n = 3; - ret = MSP; - } else if (c[1] == 'm' && c[2] == 'u' && c[3] == 's' && c[4] == 'r') { - n = 5; - ret = MMUSR; - } - break; - case 'n': - if (c[1] == 'c') { - n = 2; - ret = NC; - } - break; - case 'p': - if(c[1]=='c') { -#ifndef NO_68851 - if(c[2] == 's' && c[3]=='r') { - n=4; - ret = (PCSR); - } else -#endif - { - n=2; - ret = PC; - } - } -#ifndef NO_68851 - else if (c[1] == 's' && c[2] == 'r') { - n = 3; - ret = (PSR); - } -#endif - break; - case 's': -#ifndef NO_68851 - if (c[1] == 'c' && c[2] == 'c') { - n = 3; - ret = (SCC); - } else -#endif - if (c[1] == 'r') { - if (c[2] == 'p') { - n = 3; - ret = SRP; - } else { - n = 2; - ret = SR; - } /* srp else sr */ - } else if (c[1] == 'p') { - n = 2; - ret = SP; - } else if (c[1] == 'f' && c[2] == 'c') { - n = 3; - ret = SFC; - } - break; - case 't': - if (c[1] == 'c') { - n = 2; - ret = TC; - } - break; - case 'u': - if (c[1] == 's' && c[2] == 'p') { - n=3; - ret = USP; - } else if (c[1] == 'r' && c[2] == 'p') { - n = 3; - ret = URP; - } - break; - case 'v': -#ifndef NO_68851 - if (c[1] == 'a' && c[2] == 'l') { - n = 3; - ret = (VAL); - } else -#endif - if(c[1]=='b' && c[2]=='r') { - n=3; - ret = VBR; - } - break; - case 'z': - if(c[1]=='p' && c[2]=='c') { - n=3; - ret = ZPC; - } - break; - default: - break; - } - if(n) { -#ifdef REGISTER_PREFIX - n++; -#endif - if(isalnum(ccp[0][n]) || ccp[0][n]=='_') - ret=FAIL; - else - ccp[0]+=n; - } else - ret = FAIL; - return ret; -} - -#define SKIP_WHITE() { str++; if(ISSPACE(*str)) str++;} - -#ifdef MRI - - -/* Parse an operand from the text *str into the operand struct *opP. */ -int - m68k_ip_op(str,opP) -char *str; -register struct m68k_op *opP; -{ - char *strend; - long i; - char *parse_index(); - - /* Skip leading blank */ - if(ISSPACE(*str)) - str++; - if(!*str) { - opP->error="Missing operand"; - return FAIL; - } - /* *strend = last character of string */ - for(strend=str;*strend;strend++) - ; - --strend; - - /* Logic of the parsing switch(*str): - case opP->mode = - ---- ----------- - #anything IMMED 1 - REG AREG or DREG or MSCR 3 or 2 or 13 - REG- or REG/ REGLST 14 - (REG) AINDR 4 - (REG)+ AINC 6 - (REG,INDX) AINDX 8 - (EXPR,REG) AOFF 7 - (EXPR,REG,INDX) AINDX 8 - -(REG) ADEC 5 - EXP2(REG) AOFF 7 - EXP2(REG,INDX) AINDX 8 - EXP2 ABSL 12 - - REG means truth(m68k_reg_parse(&str)) - INDX means truth(try_index(&str,opP)) - EXPR means not REG - EXP2 means not REG and not '(' and not '-(' - */ - - if(*str=='#') { - /* "#<expression>" Immediate mode */ - str++; - opP->con1=add_exp(str,strend); - opP->mode=IMMED; - return OK; - } - - i=m68k_reg_parse(&str); - if (i!=FAIL) { - if(*str=='\0') { - /* "Rn" Register Direct mode */ - opP->reg=i; - if(i>=DATA+0 && i<=DATA+7) - opP->mode=DREG; - else if(i>=ADDR+0 && i<=ADDR+7) - opP->mode=AREG; - else - opP->mode=MSCR; - return OK; - } - else if(*str=='/' || *str=='-') { - /* "Rm-Rn/Ro-Rp" Register list for MOVEM instruction */ - opP->mode=REGLST; - return get_regs(i,str,opP); - } - else { - opP->error="Junk after register name"; - return FAIL; - } - } - - if(*str=='(') { - str++; - i=m68k_reg_parse(&str); - if((i<ADDR+0 || i>ADDR+7) && i!=PC && i!=ZPC && i!=FAIL - && (*str != ')' || str[1] != '\0' || i<DATA+0 || i>DATA+7)) { - /* Can't indirect off non address regs, - but (dx) is OK for cas2. */ - opP->error="Invalid indirect register"; - return FAIL; - } - if(i!=FAIL) { - opP->reg=i; - if(*str==')') { - str++; - if(*str=='\0') { - /* "(An)" Address Register Indirect mode - or "(Dn)" for cas2 instruction. */ - if (i < DATA + 0 || i > DATA + 7) - opP->mode=AINDR; - else - opP->mode=DINDR; - return OK; - } - if(*str=='+') { - if(str[1]=='\0') { - /* "(An)+" Register Indirect w Postincrement */ - opP->mode=AINC; - return OK; - } - } - opP->error="Junk after indirect"; - return FAIL; - } - if(*str==',') { - str++; - i=try_index(&str,opP); - if(i==FAIL) return FAIL; - /* "(An,Rn)" Register Indirect with Index mode*/ - opP->mode=AINDX; - return OK; - } - else { - opP->error="Bad indirect syntax"; - return FAIL; - } - } - else { - /* "(EXPR,..." , a displacement */ - char *stmp; - char *index(); - - if(stmp=index(str,',')) { - opP->con1=add_exp(str,stmp-1); - str=stmp; - SKIP_WHITE(); - i=m68k_reg_parse(&str); - if((i<ADDR+0 || i>ADDR+7) && i!=PC && i!=ZPC) { - /* Can't indirect off non address regs */ - opP->error="Invalid indirect register"; - return FAIL; - } - if(i!=FAIL) { - opP->reg=i; - if(*str==')') { - /* "(d,An)" Register Indirect w Displacement */ - opP->mode=AOFF; - return OK; - } - if(*str==',') { - str++; - i=try_index(&str,opP); - if(i==FAIL) return FAIL; - /* "(d,An,Rn)" Register Indirect with Index */ - opP->mode=AINDX; - return OK; - } - else { - opP->error="Bad indirect syntax"; - return FAIL; - } - } - else { - opP->error="Invalid register"; - return FAIL; - } - } - else { - opP->error="Missing register for indirect"; - return FAIL; - } - } - } - - if(*str=='-') { - if(str[1]=='(') { - str = str+2; - i=m68k_reg_parse(&str); - if((i<ADDR+0 || i>ADDR+7) && i!=PC && i!=ZPC && i!=FAIL) { - /* Can't indirect off non address regs */ - opP->error="Invalid indirect register"; - return FAIL; - } - if(i!=FAIL) { - opP->reg=i; - if(*str==')') { - str++; - if(*str=='\0') { - /* "-(An)" Register Indirect with Predecrement */ - opP->mode=ADEC; - return OK; - } - opP->error="Junk after indirect"; - return FAIL; - } - opP->error="Bad indirect syntax"; - return FAIL; - } - opP->error="Invalid register"; - return FAIL; - } - /* if '-' but not "-(', do nothing */ - } - - /* whether *str=='-' or not */ - { - /* "EXP2" or "EXP2(REG..." */ - char *stmp; - char *index(); - if(stmp=index(str,'(')) { - opP->con1=add_exp(str,stmp-1); - str=stmp+1; - i=m68k_reg_parse(&str); - if((i<ADDR+0 || i>ADDR+7) && i!=PC && i!=ZPC) { - /* Can't indirect off non address regs */ - opP->error="Invalid indirect register"; - return FAIL; - } - if(i!=FAIL) { - opP->reg=i; - if(*str==')') { - /* "d(An)" Register Indirect w Displacement */ - opP->mode=AOFF; - return OK; - } - if(*str==',') { - str++; - i=try_index(&str,opP); - if(i==FAIL) return FAIL; - /* "d(An,Rn)" Register Indirect with Index */ - opP->mode=AINDX; - return OK; - } - else { - opP->error="Bad indirect syntax"; - return FAIL; - } - } - else { - opP->error="Invalid register"; - return FAIL; - } - } - else { - /* "EXP2" Absolute */ - opP->mode=ABSL; - if(strend[-1]=='.') { /* mode ==foo.[wl] */ - switch(*strend) { - case 'w': - case 'W': - opP->isiz=2; - break; - case 'l': - case 'L': - opP->isiz=3; - break; - default: - opP->error="Size spec not .W or .L"; - return FAIL; - } - strend-=2; - } - else opP->isiz=0; - - - opP->con1=add_exp(str,strend); - return OK; - } - } -} -/* end of m68k_ip_op () */ -#else -/* - * m68k_ip_op := '#' + <anything> - * | <register> + range_sep + get_regs - * ; - * - * range_sep := '/' | '-' ; - * - * SKIP_WHITE := <empty> | ' ' ; - * - */ - -int - m68k_ip_op(str,opP) -char *str; -register struct m68k_op *opP; -{ - char *strend; - long i; - char *parse_index(); - - if (ISSPACE(*str)) { - str++; - } /* Find the beginning of the string */ - - if(!*str) { - opP->error="Missing operand"; - return FAIL; - } /* Out of gas */ - - for(strend = str; *strend; strend++) ;; - - --strend; - - if(*str=='#') { - str++; - opP->con1=add_exp(str,strend); - opP->mode=IMMED; - return OK; - } /* Guess what: A constant. Shar and enjoy */ - - i = m68k_reg_parse(&str); - - /* is a register, is exactly a register, and is followed by '@' */ - - if((i==FAIL || *str!='\0') && *str!='@') { - char *stmp; - - if(i!=FAIL && (*str=='/' || *str=='-')) { - opP->mode=REGLST; - return(get_regs(i,str,opP)); - } - if ((stmp=strchr(str,'@')) != '\0') { - opP->con1=add_exp(str,stmp-1); - if(stmp==strend) { - opP->mode=AINDX; - return(OK); - } - - if ((current_architecture & m68020up) == 0) { - return(FAIL); - } /* if target is not a '20 or better */ - - stmp++; - if(*stmp++!='(' || *strend--!=')') { - opP->error="Malformed operand"; - return(FAIL); - } - i=try_index(&stmp,opP); - opP->con2=add_exp(stmp,strend); - - if (i == FAIL) { - opP->mode=AMIND; - } else { - opP->mode=APODX; - } - return(OK); - } /* if there's an '@' */ - opP->mode = ABSL; - opP->con1 = add_exp(str,strend); - return(OK); - } /* not a register, not exactly a register, or no '@' */ - - opP->reg=i; - - if (*str=='\0') { - if(i>=DATA+0 && i<=DATA+7) - opP->mode=DREG; - else if(i>=ADDR+0 && i<=ADDR+7) - opP->mode=AREG; - else - opP->mode=MSCR; - return OK; - } - - /* Can't indirect off non address regs, but Dx@ is OK for cas2 */ - if((i<ADDR+0 || i>ADDR+7) && i!=PC && i!=ZPC && i!=FAIL - && (str[1] != '\0' || i<DATA+0 || i>DATA+7)) { - opP->error="Invalid indirect register"; - return FAIL; - } - know(*str == '@'); - - str++; - switch(*str) { - case '\0': - if (i < DATA + 0 || i > DATA + 7) - opP->mode=AINDR; - else - opP->mode=DINDR; - return OK; - case '-': - opP->mode=ADEC; - return OK; - case '+': - opP->mode=AINC; - return OK; - case '(': - str++; - break; - default: - opP->error="Junk after indirect"; - return FAIL; - } - /* Some kind of indexing involved. Lets find out how bad it is */ - i=try_index(&str,opP); - /* Didn't start with an index reg, maybe its offset or offset,reg */ - if(i==FAIL) { - char *beg_str; - - beg_str=str; - for(i=1;i;) { - switch(*str++) { - case '\0': - opP->error="Missing )"; - return FAIL; - case ',': i=0; break; - case '(': i++; break; - case ')': --i; break; - } - } - /* if(str[-3]==':') { - int siz; - - switch(str[-2]) { - case 'b': - case 'B': - siz=1; - break; - case 'w': - case 'W': - siz=2; - break; - case 'l': - case 'L': - siz=3; - break; - default: - opP->error="Specified size isn't :w or :l"; - return FAIL; - } - opP->con1=add_exp(beg_str,str-4); - opP->con1->e_siz=siz; - } else */ - opP->con1=add_exp(beg_str,str-2); - /* Should be offset,reg */ - if(str[-1]==',') { - i=try_index(&str,opP); - if(i==FAIL) { - opP->error="Malformed index reg"; - return FAIL; - } - } - } - /* We've now got offset) offset,reg) or reg) */ - - if (*str == '\0') { - /* Th-the-thats all folks */ - if (opP->reg == FAIL) opP->mode = AINDX; /* Other form of indirect */ - else if(opP->ireg == FAIL) opP->mode = AOFF; - else opP->mode = AINDX; - return(OK); - } - /* Next thing had better be another @ */ - if(*str!='@' || str[1]!='(') { - opP->error = "junk after indirect"; - return(FAIL); - } - - if ((current_architecture & m68020up) == 0) { - return(FAIL); - } /* if target is not a '20 or better */ - - str+=2; - - if(opP->ireg != FAIL) { - opP->mode = APRDX; - - i = try_index(&str, opP); - if (i != FAIL) { - opP->error = "Two index registers! not allowed!"; - return(FAIL); - } - } else { - i = try_index(&str, opP); - } - - if (i == FAIL) { - char *beg_str; - - beg_str = str; - - for (i = 1; i; ) { - switch(*str++) { - case '\0': - opP->error="Missing )"; - return(FAIL); - case ',': i=0; break; - case '(': i++; break; - case ')': --i; break; - } - } - - opP->con2=add_exp(beg_str,str-2); - - if (str[-1] == ',') { - if (opP->ireg != FAIL) { - opP->error = "Can't have two index regs"; - return(FAIL); - } - - i = try_index(&str, opP); - - if (i == FAIL) { - opP->error = "malformed index reg"; - return(FAIL); - } - - opP->mode = APODX; - } else if (opP->ireg != FAIL) { - opP->mode = APRDX; - } else { - opP->mode = AMIND; - } - } else { - opP->mode = APODX; - } - - if(*str!='\0') { - opP->error="Junk after indirect"; - return FAIL; - } - return(OK); -} /* m68k_ip_op() */ -#endif -/* - * - * try_index := data_or_address_register + ')' + SKIP_W - * | data_or_address_register + ':' + SKIP_W + size_spec + SKIP_W + multiplier + ')' + SKIP_W - * - * multiplier := <empty> - * | ':' + multiplier_number - * ; - * - * multiplier_number := '1' | '2' | '4' | '8' ; - * - * size_spec := 'l' | 'L' | 'w' | 'W' ; - * - * SKIP_W := <empty> | ' ' ; - * - */ - -static int try_index(s,opP) -char **s; -struct m68k_op *opP; -{ - register int i; - char *ss; -#define SKIP_W() { ss++; if (ISSPACE(*ss)) ss++;} - - ss= *s; - /* SKIP_W(); */ - i=m68k_reg_parse(&ss); - if(!(i>=DATA+0 && i<=ADDR+7)) { /* if i is not DATA or ADDR reg */ - *s=ss; - return FAIL; - } - opP->ireg=i; - /* SKIP_W(); */ - if(*ss==')') { - opP->isiz=0; - opP->imul=1; - SKIP_W(); - *s=ss; - return OK; - } - if(*ss!=SIZER) - { - opP->error="Missing : in index register"; - *s=ss; - return FAIL; - } - SKIP_W(); - switch(*ss) { - case 'w': - case 'W': - opP->isiz=2; - break; - case 'l': - case 'L': - opP->isiz=3; - break; - default: - opP->error="Index register size spec not :w or :l"; - *s=ss; - return FAIL; - } - SKIP_W(); - if(*ss==MULTIPLIER) - { - SKIP_W(); - switch(*ss) { - case '1': - case '2': - case '4': - case '8': - opP->imul= *ss-'0'; - break; - default: - opP->error="index multiplier not 1, 2, 4 or 8"; - *s=ss; - return FAIL; - } - SKIP_W(); - } else opP->imul=1; - if(*ss!=')') { - opP->error="Missing )"; - *s=ss; - return FAIL; - } - SKIP_W(); - *s=ss; - return OK; -} /* try_index() */ - -#ifdef TEST1 /* TEST1 tests m68k_ip_op(), which parses operands */ -main() -{ - char buf[128]; - struct m68k_op thark; - - for(;;) { - if(!gets(buf)) - break; - memset(&thark, '\0', sizeof(thark)); - if(!m68k_ip_op(buf,&thark)) printf("FAIL:"); - if(thark.error) - printf("op1 error %s in %s\n",thark.error,buf); - printf("mode %d, reg %d, ",thark.mode,thark.reg); - if(thark.b_const) - printf("Constant: '%.*s',",1+thark.e_const-thark.b_const,thark.b_const); - printf("ireg %d, isiz %d, imul %d ",thark.ireg,thark.isiz,thark.imul); - if(thark.b_iadd) - printf("Iadd: '%.*s'",1+thark.e_iadd-thark.b_iadd,thark.b_iadd); - printf("\n"); - } - exit(0); -} - -#endif - - -static struct hash_control* op_hash = NULL; /* handle of the OPCODE hash table - NULL means any use before m68k_ip_begin() - will crash */ - - -/* - * m 6 8 k _ i p ( ) - * - * This converts a string into a 68k instruction. - * The string must be a bare single instruction in sun format - * with RMS-style 68020 indirects - * (example: ) - * - * It provides some error messages: at most one fatal error message (which - * stops the scan) and at most one warning message for each operand. - * The 68k instruction is returned in exploded form, since we have no - * knowledge of how you parse (or evaluate) your expressions. - * We do however strip off and decode addressing modes and operation - * mnemonic. - * - * This function's value is a string. If it is not "" then an internal - * logic error was found: read this code to assign meaning to the string. - * No argument string should generate such an error string: - * it means a bug in our code, not in the user's text. - * - * You MUST have called m68k_ip_begin() once and m86_ip_end() never before using - * this function. - */ - -/* JF this function no longer returns a useful value. Sorry */ -void m68k_ip (instring) -char *instring; -{ - register char *p; - register struct m68k_op *opP; - register struct m68k_incant *opcode, prev_opcode; - register char *s; - register int tmpreg = 0, - baseo = 0, - outro = 0, - nextword; - int siz1, - siz2; - char c; - int losing; - int opsfound; - char *crack_operand(); - - LITTLENUM_TYPE words[6]; - LITTLENUM_TYPE *wordp; - - if (ISSPACE(*instring)) - instring++; /* skip leading whitespace */ - - /* Scan up to end of operation-code, which MUST end in end-of-string - or exactly 1 space. */ - for (p = instring; *p != '\0'; p++) - if (ISSPACE(*p)) - break; - - - if (p == instring) { - the_ins.error = "No operator"; - the_ins.opcode[0] = NULL; - /* the_ins.numo=1; */ - return; - } - - /* p now points to the end of the opcode name, probably whitespace. - make sure the name is null terminated by clobbering the whitespace, - look it up in the hash table, then fix it back. */ - c = *p; - *p = '\0'; -#ifdef MRI - /* Copy from input line to our private buffer, and drop any dots */ - { - char our_copy[100]; - char *dst = our_copy; - char *src = instring; - while (*src) - { - if (*src != '.') - *dst++ = *src; - src++; - } - *dst = 0; - - - opcode = (struct m68k_incant *)hash_find (op_hash, our_copy); - - /* If no match, try again with a w suffix */ - if (!opcode) - { - *dst++ = 'w'; - *dst = 0; - opcode = (struct m68k_incant *)hash_find (op_hash, our_copy); - } - - - - } - -#else - opcode = (struct m68k_incant *)hash_find (op_hash, instring); -#endif - *p = c; - - if (opcode == NULL) { - the_ins.error = "Unknown opcode"; - the_ins.opcode[0] = NULL; - /* the_ins.numo=1; */ - return; - } - - /* found a legitimate opcode, start matching operands */ - while (ISSPACE(*p)) ++p; - - for(opP = &the_ins.operands[0]; *p; opP++) { - - p = crack_operand(p, opP); - - if (opP->error) { - the_ins.error=opP->error; - return; - } - } - - opsfound = opP - &the_ins.operands[0]; - - /* This ugly hack is to support the floating pt opcodes in their standard form */ - /* Essentially, we fake a first enty of type COP#1 */ - if (opcode->m_operands[0]=='I') { - int n; - - for(n=opsfound;n>0;--n) - the_ins.operands[n]=the_ins.operands[n-1]; - - /* memcpy((char *)(&the_ins.operands[1]), (char *)(&the_ins.operands[0]), opsfound*sizeof(the_ins.operands[0])); */ - memset((char *)(&the_ins.operands[0]), '\0', sizeof(the_ins.operands[0])); - the_ins.operands[0].mode=MSCR; - the_ins.operands[0].reg=COPNUM; /* COP #1 */ - opsfound++; - } - - /* We've got the operands. Find an opcode that'll accept them */ - for (losing = 0; ; ) { - /* if we didn't get the right number of ops, - or we have no common model with this pattern - then reject this pattern. */ - - if (opsfound != opcode->m_opnum - || ((opcode->m_arch & current_architecture) == 0)) { - - ++losing; - - } else { - for (s=opcode->m_operands, opP = &the_ins.operands[0]; *s && !losing; s += 2, opP++) { - /* Warning: this switch is huge! */ - /* I've tried to organize the cases into this order: - non-alpha first, then alpha by letter. lower-case goes directly - before uppercase counterpart. */ - /* Code with multiple case ...: gets sorted by the lowest case ... - it belongs to. I hope this makes sense. */ - switch(*s) { - case '!': - if (opP->mode == MSCR || opP->mode == IMMED - || opP->mode == DREG || opP->mode == AREG - || opP->mode == AINC || opP->mode == ADEC - || opP->mode == REGLST) - losing++; - break; - - case '#': - if(opP->mode!=IMMED) - losing++; - else { - long t; - - t=get_num(opP->con1,80); - if(s[1]=='b' && !isbyte(t)) - losing++; - else if(s[1]=='w' && !isword(t)) - losing++; - } - break; - - case '^': - case 'T': - if(opP->mode!=IMMED) - losing++; - break; - - case '$': - if(opP->mode==MSCR || opP->mode==AREG || - opP->mode==IMMED || opP->reg==PC || opP->reg==ZPC || opP->mode==REGLST) - losing++; - break; - - case '%': - if(opP->mode==MSCR || opP->reg==PC || - opP->reg==ZPC || opP->mode==REGLST) - losing++; - break; - - - case '&': - if(opP->mode==MSCR || opP->mode==DREG || - opP->mode==AREG || opP->mode==IMMED || opP->reg==PC || opP->reg==ZPC || - opP->mode==AINC || opP->mode==ADEC || opP->mode==REGLST) - losing++; - break; - - case '*': - if(opP->mode==MSCR || opP->mode==REGLST) - losing++; - break; - - case '+': - if(opP->mode!=AINC) - losing++; - break; - - case '-': - if(opP->mode!=ADEC) - losing++; - break; - - case '/': - if(opP->mode==MSCR || opP->mode==AREG || - opP->mode==AINC || opP->mode==ADEC || opP->mode==IMMED || opP->mode==REGLST) - losing++; - break; - - case ';': - if(opP->mode==MSCR || opP->mode==AREG || opP->mode==REGLST) - losing++; - break; - - case '?': - if(opP->mode==MSCR || opP->mode==AREG || - opP->mode==AINC || opP->mode==ADEC || opP->mode==IMMED || opP->reg==PC || - opP->reg==ZPC || opP->mode==REGLST) - losing++; - break; - - case '@': - if(opP->mode==MSCR || opP->mode==AREG || - opP->mode==IMMED || opP->mode==REGLST) - losing++; - break; - - case '~': /* For now! (JF FOO is this right?) */ - if(opP->mode==MSCR || opP->mode==DREG || - opP->mode==AREG || opP->mode==IMMED || opP->reg==PC || opP->reg==ZPC || opP->mode==REGLST) - losing++; - break; - - case 'A': - if(opP->mode!=AREG) - losing++; - break; - case 'a': - if (opP->mode != AINDR) { - ++losing; - } /* if not address register indirect */ - break; - case 'B': /* FOO */ - if(opP->mode!=ABSL || (flagseen['S'] && instring[0] == 'j' - && instring[1] == 'b' - && instring[2] == 's' - && instring[3] == 'r')) - losing++; - break; - - case 'C': - if(opP->mode!=MSCR || opP->reg!=CCR) - losing++; - break; - - case 'd': /* FOO This mode is a KLUDGE!! */ - if(opP->mode!=AOFF && (opP->mode!=ABSL || - opP->con1->e_beg[0]!='(' || opP->con1->e_end[0]!=')')) - losing++; - break; - - case 'D': - if(opP->mode!=DREG) - losing++; - break; - - case 'F': - if(opP->mode!=MSCR || opP->reg<(FPREG+0) || opP->reg>(FPREG+7)) - losing++; - break; - - case 'I': - if(opP->mode!=MSCR || opP->reg<COPNUM || - opP->reg>=COPNUM+7) - losing++; - break; - - case 'J': - if (opP->mode != MSCR - || opP->reg < USP - || opP->reg > URP - || cpu_of_arch(current_architecture) < m68010 /* before 68010 had none */ - || (cpu_of_arch(current_architecture) < m68020 - && opP->reg != SFC - && opP->reg != DFC - && opP->reg != USP - && opP->reg != VBR) /* 68010's had only these */ - || (cpu_of_arch(current_architecture) < m68040 - && opP->reg != SFC - && opP->reg != DFC - && opP->reg != USP - && opP->reg != VBR - && opP->reg != CACR - && opP->reg != CAAR - && opP->reg != MSP - && opP->reg != ISP) /* 680[23]0's have only these */ - || (cpu_of_arch(current_architecture) == m68040 /* 68040 has all but this */ - && opP->reg == CAAR)) { - losing++; - } /* doesn't cut it */ - break; - - case 'k': - if(opP->mode!=IMMED) - losing++; - break; - - case 'l': - case 'L': - if(opP->mode==DREG || opP->mode==AREG || opP->mode==FPREG) { - if(s[1]=='8') - losing++; - else { - opP->mode=REGLST; - opP->reg=1<<(opP->reg-DATA); - } - } else if(opP->mode!=REGLST) { - losing++; - } else if(s[1]=='8' && opP->reg&0x0FFffFF) - losing++; - else if(s[1]=='3' && opP->reg&0x7000000) - losing++; - break; - - case 'M': - if(opP->mode!=IMMED) - losing++; - else { - long t; - - t=get_num(opP->con1,80); - if(!issbyte(t) || isvar(opP->con1)) - losing++; - } - break; - - case 'O': - if(opP->mode!=DREG && opP->mode!=IMMED) - losing++; - break; - - case 'Q': - if(opP->mode!=IMMED) - losing++; - else { - long t; - - t=get_num(opP->con1,80); - if(t<1 || t>8 || isvar(opP->con1)) - losing++; - } - break; - - case 'R': - if(opP->mode!=DREG && opP->mode!=AREG) - losing++; - break; - - case 'r': - if(opP->mode!=AINDR && opP->mode!=DINDR) - losing++; - break; - - case 's': - if(opP->mode!=MSCR || !(opP->reg==FPI || opP->reg==FPS || opP->reg==FPC)) - losing++; - break; - - case 'S': - if(opP->mode!=MSCR || opP->reg!=SR) - losing++; - break; - - case 'U': - if(opP->mode!=MSCR || opP->reg!=USP) - losing++; - break; - - /* JF these are out of order. We could put them - in order if we were willing to put up with - bunches of #ifdef m68851s in the code */ -#ifndef NO_68851 - /* Memory addressing mode used by pflushr */ - case '|': - if(opP->mode==MSCR || opP->mode==DREG || - opP->mode==AREG || opP->mode==REGLST) - losing++; - break; - - case 'f': - if (opP->mode != MSCR || (opP->reg != SFC && opP->reg != DFC)) - losing++; - break; - - case 'P': - if (opP->mode != MSCR || (opP->reg != TC && opP->reg != CAL && - opP->reg != VAL && opP->reg != SCC && opP->reg != AC)) - losing++; - break; - - case 'V': - if (opP->reg != VAL) - losing++; - break; - - case 'W': - if (opP->mode != MSCR || (opP->reg != DRP && opP->reg != SRP && - opP->reg != CRP)) - losing++; - break; - - case 'X': - if (opP->mode != MSCR || - (!(opP->reg >= BAD && opP->reg <= BAD+7) && - !(opP->reg >= BAC && opP->reg <= BAC+7))) - losing++; - break; - - case 'Y': - if (opP->reg != PSR) - losing++; - break; - - case 'Z': - if (opP->reg != PCSR) - losing++; - break; -#endif - case 'c': - if (opP->reg != NC - && opP->reg != IC - && opP->reg != DC - && opP->reg != BC) { - losing++; - } /* not a cache specifier. */ - break; - - case '_': - if (opP->mode != ABSL) { - ++losing; - } /* not absolute */ - break; - - default: - as_fatal("Internal error: Operand mode %c unknown in line %s of file \"%s\"", - *s, __LINE__, __FILE__); - } /* switch on type of operand */ - - if (losing) break; - } /* for each operand */ - } /* if immediately wrong */ - - if (!losing) { - break; - } /* got it. */ - - - if (!opcode->m_next) - { - if ((opcode->m_arch & current_architecture) == 0) - { - the_ins.error = "Opcode not available on architecture specified"; - addword(0); - - } - else - { - the_ins.error = "instruction/operands mismatch"; - } - - return; - } /* Fell off the end */ - opcode = opcode->m_next; - losing = 0; - } - - /* now assemble it */ - - the_ins.args=opcode->m_operands; - the_ins.numargs=opcode->m_opnum; - the_ins.numo=opcode->m_codenum; - the_ins.opcode[0]=getone(opcode); - the_ins.opcode[1]=gettwo(opcode); - - for (s = the_ins.args, opP = &the_ins.operands[0]; *s; s += 2, opP++) { - /* This switch is a doozy. - Watch the first step; its a big one! */ - switch(s[0]) { - - case '*': - case '~': - case '%': - case ';': - case '@': - case '!': - case '&': - case '$': - case '?': - case '/': -#ifndef NO_68851 - case '|': -#endif - switch(opP->mode) { - case IMMED: - tmpreg=0x3c; /* 7.4 */ - if (strchr("bwl",s[1])) nextword=get_num(opP->con1,80); - else nextword=nextword=get_num(opP->con1,0); - if(isvar(opP->con1)) - add_fix(s[1],opP->con1,0); - switch(s[1]) { - case 'b': - if(!isbyte(nextword)) - opP->error="operand out of range"; - addword(nextword); - baseo=0; - break; - case 'w': - if(!isword(nextword)) - opP->error="operand out of range"; - addword(nextword); - baseo=0; - break; - case 'l': - addword(nextword>>16); - addword(nextword); - baseo=0; - break; - - case 'f': - baseo=2; - outro=8; - break; - case 'F': - baseo=4; - outro=11; - break; - case 'x': - baseo=6; - outro=15; - break; - case 'p': - baseo=6; - outro= -1; - break; - default: - as_fatal("Internal error: Can't decode %c%c in line %s of file \"%s\"", - *s, s[1], __LINE__, __FILE__); - } - if(!baseo) - break; - - /* We gotta put out some float */ - if(seg(opP->con1)!=SEG_BIG) { - int_to_gen(nextword); - gen_to_words(words,baseo,(long int)outro); - for(wordp=words;baseo--;wordp++) - addword(*wordp); - break; - } /* Its BIG */ - if(offs(opP->con1)>0) { - as_warn("Bignum assumed to be binary bit-pattern"); - if(offs(opP->con1)>baseo) { - as_warn("Bignum too big for %c format; truncated",s[1]); - offs(opP->con1)=baseo; - } - baseo-=offs(opP->con1); - for(wordp=generic_bignum+offs(opP->con1)-1;offs(opP->con1)--;--wordp) - addword(*wordp); - while(baseo--) - addword(0); - break; - } - gen_to_words(words,baseo,(long)outro); - for (wordp=words;baseo--;wordp++) - addword(*wordp); - break; - case DREG: - tmpreg=opP->reg-DATA; /* 0.dreg */ - break; - case AREG: - tmpreg=0x08+opP->reg-ADDR; /* 1.areg */ - break; - case AINDR: - tmpreg=0x10+opP->reg-ADDR; /* 2.areg */ - break; - case ADEC: - tmpreg=0x20+opP->reg-ADDR; /* 4.areg */ - break; - case AINC: - tmpreg=0x18+opP->reg-ADDR; /* 3.areg */ - break; - case AOFF: - - nextword=get_num(opP->con1,80); - /* Force into index mode. Hope this works */ - - /* We do the first bit for 32-bit displacements, - and the second bit for 16 bit ones. It is - possible that we should make the default be - WORD instead of LONG, but I think that'd - break GCC, so we put up with a little - inefficiency for the sake of working output. - */ - - if( !issword(nextword) - || ( isvar(opP->con1) - && ( ( opP->con1->e_siz==0 - && flagseen['l']==0) - || opP->con1->e_siz==3))) { - - if(opP->reg==PC) - tmpreg=0x3B; /* 7.3 */ - else - tmpreg=0x30+opP->reg-ADDR; /* 6.areg */ - if(isvar(opP->con1)) { - if(opP->reg==PC) { - add_frag(adds(opP->con1), - offs(opP->con1), - TAB(PCLEA,SZ_UNDEF)); - break; - } else { - addword(0x0170); - add_fix('l',opP->con1,1); - } - } else - addword(0x0170); - addword(nextword>>16); - } else { - if(opP->reg==PC) - tmpreg=0x3A; /* 7.2 */ - else - tmpreg=0x28+opP->reg-ADDR; /* 5.areg */ - - if(isvar(opP->con1)) { - if(opP->reg==PC) { - add_fix('w',opP->con1,1); - } else - add_fix('w',opP->con1,0); - } - } - addword(nextword); - break; - - case APODX: - case AMIND: - case APRDX: - know(current_architecture & m68020up); - /* intentional fall-through */ - case AINDX: - nextword=0; - baseo=get_num(opP->con1,80); - outro=get_num(opP->con2,80); - /* Figure out the 'addressing mode' */ - /* Also turn on the BASE_DISABLE bit, if needed */ - if(opP->reg==PC || opP->reg==ZPC) { - tmpreg=0x3b; /* 7.3 */ - if(opP->reg==ZPC) - nextword|=0x80; - } else if(opP->reg==FAIL) { - nextword|=0x80; - tmpreg=0x30; /* 6.garbage */ - } else tmpreg=0x30+opP->reg-ADDR; /* 6.areg */ - - siz1= (opP->con1) ? opP->con1->e_siz : 0; - siz2= (opP->con2) ? opP->con2->e_siz : 0; - - /* Index register stuff */ - if(opP->ireg>=DATA+0 && opP->ireg<=ADDR+7) { - nextword|=(opP->ireg-DATA)<<12; - - if(opP->isiz==0 || opP->isiz==3) - nextword|=0x800; - switch(opP->imul) { - case 1: break; - case 2: nextword|=0x200; break; - case 4: nextword|=0x400; break; - case 8: nextword|=0x600; break; - default: as_fatal("failed sanity check."); - } - /* IF its simple, - GET US OUT OF HERE! */ - - /* Must be INDEX, with an index - register. Address register - cannot be ZERO-PC, and either - :b was forced, or we know - it will fit */ - if( opP->mode==AINDX - && opP->reg!=FAIL - && opP->reg!=ZPC - && ( siz1==1 - || ( issbyte(baseo) - && !isvar(opP->con1)))) { - nextword +=baseo&0xff; - addword(nextword); - if(isvar(opP->con1)) - add_fix('B',opP->con1,0); - break; - } - } else - nextword|=0x40; /* No index reg */ - - /* It aint simple */ - nextword|=0x100; - /* If the guy specified a width, we assume that - it is wide enough. Maybe it isn't. If so, we lose - */ - switch(siz1) { - case 0: - if(isvar(opP->con1) || !issword(baseo)) { - siz1=3; - nextword|=0x30; - } else if(baseo==0) - nextword|=0x10; - else { - nextword|=0x20; - siz1=2; - } - break; - case 1: - as_warn("Byte dispacement won't work. Defaulting to :w"); - case 2: - nextword|=0x20; - break; - case 3: - nextword|=0x30; - break; - } - - /* Figure out innner displacement stuff */ - if(opP->mode!=AINDX) { - switch(siz2) { - case 0: - if(isvar(opP->con2) || !issword(outro)) { - siz2=3; - nextword|=0x3; - } else if(outro==0) - nextword|=0x1; - else { - nextword|=0x2; - siz2=2; - } - break; - case 1: - as_warn("Byte dispacement won't work. Defaulting to :w"); - case 2: - nextword|=0x2; - break; - case 3: - nextword|=0x3; - break; - } - if(opP->mode==APODX) nextword|=0x04; - else if(opP->mode==AMIND) nextword|=0x40; - } - addword(nextword); - - if(isvar(opP->con1)) { - if(opP->reg==PC || opP->reg==ZPC) { - add_fix(siz1==3 ? 'l' : 'w',opP->con1,1); - opP->con1->e_exp.X_add_number+=6; - } else - add_fix(siz1==3 ? 'l' : 'w',opP->con1,0); - } - if(siz1==3) - addword(baseo>>16); - if(siz1) - addword(baseo); - - if(isvar(opP->con2)) { - if(opP->reg==PC || opP->reg==ZPC) { - add_fix(siz2==3 ? 'l' : 'w',opP->con2,1); - opP->con1->e_exp.X_add_number+=6; - } else - add_fix(siz2==3 ? 'l' : 'w',opP->con2,0); - } - if(siz2==3) - addword(outro>>16); - if(siz2) - addword(outro); - - break; - - case ABSL: - nextword=get_num(opP->con1,80); - switch(opP->con1->e_siz) { - default: - as_warn("Unknown size for absolute reference"); - case 0: - if(!isvar(opP->con1) && issword(offs(opP->con1))) { - tmpreg=0x38; /* 7.0 */ - addword(nextword); - break; - } - /* Don't generate pc relative code - on 68010 and 68000 */ - if(isvar(opP->con1) - && !subs(opP->con1) - && seg(opP->con1) == SEG_TEXT - && now_seg == SEG_TEXT - && cpu_of_arch(current_architecture) < m68020 - && !flagseen['S'] - && !strchr("~%&$?", s[0])) { - tmpreg=0x3A; /* 7.2 */ - add_frag(adds(opP->con1), - offs(opP->con1), - TAB(PCREL,SZ_UNDEF)); - break; - } - case 3: /* Fall through into long */ - if(isvar(opP->con1)) - add_fix('l',opP->con1,0); - - tmpreg=0x39; /* 7.1 mode */ - addword(nextword>>16); - addword(nextword); - break; - - case 2: /* Word */ - if(isvar(opP->con1)) - add_fix('w',opP->con1,0); - - tmpreg=0x38; /* 7.0 mode */ - addword(nextword); - break; - } - break; - case DINDR: - as_bad("invalid indirect register"); - break; - case MSCR: - default: - as_bad("unknown/incorrect operand"); - /* abort(); */ - } - install_gen_operand(s[1],tmpreg); - break; - - case '#': - case '^': - switch(s[1]) { /* JF: I hate floating point! */ - case 'j': - tmpreg=70; - break; - case '8': - tmpreg=20; - break; - case 'C': - tmpreg=50; - break; - case '3': - default: - tmpreg=80; - break; - } - tmpreg=get_num(opP->con1,tmpreg); - if(isvar(opP->con1)) - add_fix(s[1],opP->con1,0); - switch(s[1]) { - case 'b': /* Danger: These do no check for - certain types of overflow. - user beware! */ - if(!isbyte(tmpreg)) - opP->error="out of range"; - insop(tmpreg); - if(isvar(opP->con1)) - the_ins.reloc[the_ins.nrel-1].n=(opcode->m_codenum)*2; - break; - case 'w': - if(!isword(tmpreg)) - opP->error="out of range"; - insop(tmpreg); - if(isvar(opP->con1)) - the_ins.reloc[the_ins.nrel-1].n=(opcode->m_codenum)*2; - break; - case 'l': - insop(tmpreg); /* Because of the way insop works, we put these two out backwards */ - insop(tmpreg>>16); - if(isvar(opP->con1)) - the_ins.reloc[the_ins.nrel-1].n=(opcode->m_codenum)*2; - break; - case '3': - tmpreg&=0xFF; - case '8': - case 'C': - install_operand(s[1],tmpreg); - break; - default: - as_fatal("Internal error: Unknown mode #%c in line %s of file \"%s\"", s[1], __LINE__, __FILE__); - } - break; - - case '+': - case '-': - case 'A': - case 'a': - install_operand(s[1],opP->reg-ADDR); - break; - - case 'B': - tmpreg=get_num(opP->con1,80); - switch(s[1]) { - case 'B': - /* Needs no offsetting */ - add_fix('B',opP->con1,1); - break; - case 'W': - /* Offset the displacement to be relative to byte disp location */ - opP->con1->e_exp.X_add_number+=2; - add_fix('w',opP->con1,1); - addword(0); - break; - case 'L': - long_branch: - if (cpu_of_arch(current_architecture) < m68020) /* 68000 or 010 */ - as_warn("Can't use long branches on 68000/68010"); - the_ins.opcode[the_ins.numo-1]|=0xff; - /* Offset the displacement to be relative to byte disp location */ - opP->con1->e_exp.X_add_number+=4; - add_fix('l',opP->con1,1); - addword(0); - addword(0); - break; - case 'g': - if(subs(opP->con1)) /* We can't relax it */ - goto long_branch; - - /* This could either be a symbol, or an - absolute address. No matter, the - frag hacking will finger it out. - Not quite: it can't switch from - BRANCH to BCC68000 for the case - where opnd is absolute (it needs - to use the 68000 hack since no - conditional abs jumps). */ - if (((cpu_of_arch(current_architecture) < m68020) || (0==adds(opP->con1))) - && (the_ins.opcode[0] >= 0x6200) - && (the_ins.opcode[0] <= 0x6f00)) { - add_frag(adds(opP->con1),offs(opP->con1),TAB(BCC68000,SZ_UNDEF)); - } else { - add_frag(adds(opP->con1),offs(opP->con1),TAB(BRANCH,SZ_UNDEF)); - } - break; - case 'w': - if(isvar(opP->con1)) { - /* check for DBcc instruction */ - if ((the_ins.opcode[0] & 0xf0f8) ==0x50c8) { - /* size varies if patch */ - /* needed for long form */ - add_frag(adds(opP->con1),offs(opP->con1),TAB(DBCC,SZ_UNDEF)); - break; - } - - /* Don't ask! */ - opP->con1->e_exp.X_add_number+=2; - add_fix('w',opP->con1,1); - } - addword(0); - break; - case 'C': /* Fixed size LONG coproc branches */ - the_ins.opcode[the_ins.numo-1]|=0x40; - /* Offset the displacement to be relative to byte disp location */ - /* Coproc branches don't have a byte disp option, but they are - compatible with the ordinary branches, which do... */ - opP->con1->e_exp.X_add_number+=4; - add_fix('l',opP->con1,1); - addword(0); - addword(0); - break; - case 'c': /* Var size Coprocesssor branches */ - if(subs(opP->con1)) { - add_fix('l',opP->con1,1); - add_frag((symbolS *)0,(long)0,TAB(FBRANCH,LONG)); - } else if(adds(opP->con1)) { - add_frag(adds(opP->con1),offs(opP->con1),TAB(FBRANCH,SZ_UNDEF)); - } else { - /* add_frag((symbolS *)0,offs(opP->con1),TAB(FBRANCH,SHORT)); */ - the_ins.opcode[the_ins.numo-1]|=0x40; - add_fix('l',opP->con1,1); - addword(0); - addword(4); - } - break; - default: - as_fatal("Internal error: operand type B%c unknown in line %s of file \"%s\"", - s[1], __LINE__, __FILE__); - } - break; - - case 'C': /* Ignore it */ - break; - - case 'd': /* JF this is a kludge */ - if(opP->mode==AOFF) { - install_operand('s',opP->reg-ADDR); - } else { - char *tmpP; - - tmpP=opP->con1->e_end-2; - opP->con1->e_beg++; - opP->con1->e_end-=4; /* point to the , */ - baseo=m68k_reg_parse(&tmpP); - if(baseo<ADDR+0 || baseo>ADDR+7) { - as_bad("Unknown address reg, using A0"); - baseo=0; - } else baseo-=ADDR; - install_operand('s',baseo); - } - tmpreg=get_num(opP->con1,80); - if(!issword(tmpreg)) { - as_warn("Expression out of range, using 0"); - tmpreg=0; - } - addword(tmpreg); - break; - - case 'D': - install_operand(s[1],opP->reg-DATA); - break; - - case 'F': - install_operand(s[1],opP->reg-FPREG); - break; - - case 'I': - tmpreg=1+opP->reg-COPNUM; - if(tmpreg==8) - tmpreg=0; - install_operand(s[1],tmpreg); - break; - - case 'J': /* JF foo */ - switch(opP->reg) { - case SFC: tmpreg=0x000; break; - case DFC: tmpreg=0x001; break; - case CACR: tmpreg=0x002; break; - case TC: tmpreg=0x003; break; - case ITT0: tmpreg=0x004; break; - case ITT1: tmpreg=0x005; break; - case DTT0: tmpreg=0x006; break; - case DTT1: tmpreg=0x007; break; - - case USP: tmpreg=0x800; break; - case VBR: tmpreg=0x801; break; - case CAAR: tmpreg=0x802; break; - case MSP: tmpreg=0x803; break; - case ISP: tmpreg=0x804; break; - case MMUSR: tmpreg=0x805; break; - case URP: tmpreg=0x806; break; - case SRP: tmpreg=0x807; break; - default: - as_fatal("failed sanity check."); - } - install_operand(s[1],tmpreg); - break; - - case 'k': - tmpreg=get_num(opP->con1,55); - install_operand(s[1],tmpreg&0x7f); - break; - - case 'l': - tmpreg=opP->reg; - if(s[1]=='w') { - if(tmpreg&0x7FF0000) - as_bad("Floating point register in register list"); - insop(reverse_16_bits(tmpreg)); - } else { - if(tmpreg&0x700FFFF) - as_bad("Wrong register in floating-point reglist"); - install_operand(s[1],reverse_8_bits(tmpreg>>16)); - } - break; - - case 'L': - tmpreg=opP->reg; - if(s[1]=='w') { - if(tmpreg&0x7FF0000) - as_bad("Floating point register in register list"); - insop(tmpreg); - } else if(s[1]=='8') { - if(tmpreg&0x0FFFFFF) - as_bad("incorrect register in reglist"); - install_operand(s[1],tmpreg>>24); - } else { - if(tmpreg&0x700FFFF) - as_bad("wrong register in floating-point reglist"); - else - install_operand(s[1],tmpreg>>16); - } - break; - - case 'M': - install_operand(s[1],get_num(opP->con1,60)); - break; - - case 'O': - tmpreg= (opP->mode==DREG) - ? 0x20+opP->reg-DATA - : (get_num(opP->con1,40)&0x1F); - install_operand(s[1],tmpreg); - break; - - case 'Q': - tmpreg=get_num(opP->con1,10); - if(tmpreg==8) - tmpreg=0; - install_operand(s[1],tmpreg); - break; - - case 'R': - case 'r': - /* This depends on the fact that ADDR registers are - eight more than their corresponding DATA regs, so - the result will have the ADDR_REG bit set */ - install_operand(s[1],opP->reg-DATA); - break; - - case 's': - if(opP->reg==FPI) tmpreg=0x1; - else if(opP->reg==FPS) tmpreg=0x2; - else if(opP->reg==FPC) tmpreg=0x4; - else as_fatal("failed sanity check."); - install_operand(s[1],tmpreg); - break; - - case 'S': /* Ignore it */ - break; - - case 'T': - install_operand(s[1],get_num(opP->con1,30)); - break; - - case 'U': /* Ignore it */ - break; - - case 'c': - switch (opP->reg) { - case NC: tmpreg = 0; break; - case DC: tmpreg = 1; break; - case IC: tmpreg = 2; break; - case BC: tmpreg = 3; break; - default: - as_fatal("failed sanity check"); - } /* switch on cache token */ - install_operand(s[1], tmpreg); - break; -#ifndef NO_68851 - /* JF: These are out of order, I fear. */ - case 'f': - switch (opP->reg) { - case SFC: - tmpreg=0; - break; - case DFC: - tmpreg=1; - break; - default: - as_fatal("failed sanity check."); - } - install_operand(s[1],tmpreg); - break; - - case 'P': - switch(opP->reg) { - case TC: - tmpreg=0; - break; - case CAL: - tmpreg=4; - break; - case VAL: - tmpreg=5; - break; - case SCC: - tmpreg=6; - break; - case AC: - tmpreg=7; - break; - default: - as_fatal("failed sanity check."); - } - install_operand(s[1],tmpreg); - break; - - case 'V': - if (opP->reg == VAL) - break; - as_fatal("failed sanity check."); - - case 'W': - switch(opP->reg) { - - case DRP: - tmpreg=1; - break; - case SRP: - tmpreg=2; - break; - case CRP: - tmpreg=3; - break; - default: - as_fatal("failed sanity check."); - } - install_operand(s[1],tmpreg); - break; - - case 'X': - switch (opP->reg) { - case BAD: case BAD+1: case BAD+2: case BAD+3: - case BAD+4: case BAD+5: case BAD+6: case BAD+7: - tmpreg = (4 << 10) | ((opP->reg - BAD) << 2); - break; - - case BAC: case BAC+1: case BAC+2: case BAC+3: - case BAC+4: case BAC+5: case BAC+6: case BAC+7: - tmpreg = (5 << 10) | ((opP->reg - BAC) << 2); - break; - - default: - as_fatal("failed sanity check."); - } - install_operand(s[1], tmpreg); - break; - case 'Y': - know(opP->reg == PSR); - break; - case 'Z': - know(opP->reg == PCSR); - break; -#endif /* m68851 */ - case '_': - tmpreg=get_num(opP->con1,80); - install_operand(s[1], tmpreg); - break; - default: - as_fatal("Internal error: Operand type %c unknown in line %s of file \"%s\"", s[0], __LINE__, __FILE__); - } - } - /* By the time whe get here (FINALLY) the_ins contains the complete - instruction, ready to be emitted. . . */ -} /* m68k_ip() */ - -/* - * get_regs := '/' + ? - * | '-' + <register> - * | '-' + <register> + ? - * | <empty> - * ; - * - - * The idea here must be to scan in a set of registers but I don't - * understand it. Looks awfully sloppy to me but I don't have any doc on - * this format so... - - * - * - */ - -static int get_regs(i,str,opP) -int i; -struct m68k_op *opP; -char *str; -{ - /* 26, 25, 24, 23-16, 15-8, 0-7 */ - /* Low order 24 bits encoded fpc,fps,fpi,fp7-fp0,a7-a0,d7-d0 */ - unsigned long cur_regs = 0; - int reg1, - reg2; - -#define ADD_REG(x) { if(x==FPI) cur_regs|=(1<<24);\ -else if(x==FPS) cur_regs|=(1<<25);\ -else if(x==FPC) cur_regs|=(1<<26);\ -else cur_regs|=(1<<(x-1)); } - - reg1=i; - for(;;) { - if(*str=='/') { - ADD_REG(reg1); - str++; - } else if(*str=='-') { - str++; - reg2=m68k_reg_parse(&str); - if(reg2<DATA || reg2>=FPREG+8 || reg1==FPI || reg1==FPS || reg1==FPC) { - opP->error="unknown register in register list"; - return FAIL; - } - while(reg1<=reg2) { - ADD_REG(reg1); - reg1++; - } - if(*str=='\0') - break; - } else if(*str=='\0') { - ADD_REG(reg1); - break; - } else { - opP->error="unknow character in register list"; - return FAIL; - } - /* DJA -- Bug Fix. Did't handle d1-d2/a1 until the following instruction was added */ - if (*str=='/') - str ++; - reg1=m68k_reg_parse(&str); - if((reg1<DATA || reg1>=FPREG+8) && !(reg1==FPI || reg1==FPS || reg1==FPC)) { - opP->error="unknown register in register list"; - return FAIL; - } - } - opP->reg=cur_regs; - return OK; -} /* get_regs() */ - -static int reverse_16_bits(in) -int in; -{ - int out=0; - int n; - - static int mask[16] = { - 0x0001,0x0002,0x0004,0x0008,0x0010,0x0020,0x0040,0x0080, - 0x0100,0x0200,0x0400,0x0800,0x1000,0x2000,0x4000,0x8000 - }; - for(n=0;n<16;n++) { - if(in&mask[n]) - out|=mask[15-n]; - } - return out; -} /* reverse_16_bits() */ - -static int reverse_8_bits(in) -int in; -{ - int out=0; - int n; - - static int mask[8] = { - 0x0001,0x0002,0x0004,0x0008,0x0010,0x0020,0x0040,0x0080, - }; - - for(n=0;n<8;n++) { - if(in&mask[n]) - out|=mask[7-n]; - } - return out; -} /* reverse_8_bits() */ - -static void install_operand(mode,val) -int mode; -int val; -{ - switch(mode) { - case 's': - the_ins.opcode[0]|=val & 0xFF; /* JF FF is for M kludge */ - break; - case 'd': - the_ins.opcode[0]|=val<<9; - break; - case '1': - the_ins.opcode[1]|=val<<12; - break; - case '2': - the_ins.opcode[1]|=val<<6; - break; - case '3': - the_ins.opcode[1]|=val; - break; - case '4': - the_ins.opcode[2]|=val<<12; - break; - case '5': - the_ins.opcode[2]|=val<<6; - break; - case '6': - /* DANGER! This is a hack to force cas2l and cas2w cmds - to be three words long! */ - the_ins.numo++; - the_ins.opcode[2]|=val; - break; - case '7': - the_ins.opcode[1]|=val<<7; - break; - case '8': - the_ins.opcode[1]|=val<<10; - break; -#ifndef NO_68851 - case '9': - the_ins.opcode[1]|=val<<5; - break; -#endif - - case 't': - the_ins.opcode[1]|=(val<<10)|(val<<7); - break; - case 'D': - the_ins.opcode[1]|=(val<<12)|val; - break; - case 'g': - the_ins.opcode[0]|=val=0xff; - break; - case 'i': - the_ins.opcode[0]|=val<<9; - break; - case 'C': - the_ins.opcode[1]|=val; - break; - case 'j': - the_ins.opcode[1]|=val; - the_ins.numo++; /* What a hack */ - break; - case 'k': - the_ins.opcode[1]|=val<<4; - break; - case 'b': - case 'w': - case 'l': - break; - case 'e': - the_ins.opcode[0] |= (val << 6); - break; - case 'L': - the_ins.opcode[1] = (val >> 16); - the_ins.opcode[2] = val & 0xffff; - break; - case 'c': - default: - as_fatal("failed sanity check."); - } -} /* install_operand() */ - -static void install_gen_operand(mode,val) -int mode; -int val; -{ - switch(mode) { - case 's': - the_ins.opcode[0]|=val; - break; - case 'd': - /* This is a kludge!!! */ - the_ins.opcode[0]|=(val&0x07)<<9|(val&0x38)<<3; - break; - case 'b': - case 'w': - case 'l': - case 'f': - case 'F': - case 'x': - case 'p': - the_ins.opcode[0]|=val; - break; - /* more stuff goes here */ - default: - as_fatal("failed sanity check."); - } -} /* install_gen_operand() */ - -/* - * verify that we have some number of paren pairs, do m68k_ip_op(), and - * then deal with the bitfield hack. - */ - -static char *crack_operand(str,opP) -register char *str; -register struct m68k_op *opP; -{ - register int parens; - register int c; - register char *beg_str; - - if(!str) { - return str; - } - beg_str=str; - for(parens=0;*str && (parens>0 || notend(str));str++) { - if(*str=='(') parens++; - else if(*str==')') { - if(!parens) { /* ERROR */ - opP->error="Extra )"; - return str; - } - --parens; - } - } - if(!*str && parens) { /* ERROR */ - opP->error="Missing )"; - return str; - } - c= *str; - *str='\0'; - if(m68k_ip_op(beg_str,opP)==FAIL) { - *str=c; - return str; - } - *str=c; - - if(c=='}') - c= *++str; /* JF bitfield hack */ - - if(c) { - c= *++str; - if(!c) - as_bad("Missing operand"); - } - return str; -} - -/* See the comment up above where the #define notend(... is */ -#if 0 -notend(s) -char *s; -{ - if(*s==',') return 0; - if(*s=='{' || *s=='}') - return 0; - if(*s!=':') return 1; - /* This kludge here is for the division cmd, which is a kludge */ - if(index("aAdD#(",s[1])) return 0; - return 1; -} -#endif - - -int done_pseudo(str) -char *str; -{ - extern struct hash_control * po_hash; - char *ptr = str; - char *null_ptr; - pseudo_typeS * pop; - - char c; - - is_end_of_line[0] = 1; - /* Skip over name of pseudo, change to lower case */ - while (isalpha(*ptr) || *ptr == '.') - { - if (isupper(*ptr)) { - *ptr = tolower(*ptr); - } - ptr++; - } - null_ptr = ptr; - c = *null_ptr; - *null_ptr = 0; - - - pop = (pseudo_typeS *)hash_find(po_hash, str); - - *null_ptr = c; - if (pop != (pseudo_typeS *)NULL) - { - input_line_pointer = null_ptr+1; - SKIP_WHITESPACE(); - /* Now we point to first non-blank char after pseudo op */ - (*pop->poc_handler)(pop->poc_val); - input_line_pointer--; - - return 1; - - } - /* Just put back the char where the null was put and return as if nothing had happened */ - - *null_ptr = c; - return 0; - -} - - -/* This is the guts of the machine-dependent assembler. STR points to a - machine dependent instruction. This function is supposed to emit - the frags/bytes it assembles to. - */ -void - md_assemble(str) -char *str; -{ - char *er; - short *fromP; - char *toP = NULL; - int m,n = 0; - char *to_beg_P; - int shorts_this_frag; - - /* if (done_pseudo(str)) return ;*/ - - - - if (current_architecture == 0) { - current_architecture = (m68020 -#ifndef NO_68881 - | m68881 -#endif -#ifndef NO_68851 - | m68851 -#endif - ); - } /* default current_architecture */ - - memset((char *)(&the_ins), '\0', sizeof(the_ins)); /* JF for paranoia sake */ - - m68k_ip(str); - er=the_ins.error; - if(!er) { - for(n=the_ins.numargs;n;--n) - if(the_ins.operands[n].error) { - er=the_ins.operands[n].error; - break; - } - } - if(er) { - as_bad("\"%s\" -- Statement '%s' ignored",er,str); - return; - } - - if(the_ins.nfrag==0) { /* No frag hacking involved; just put it out */ - toP=frag_more(2*the_ins.numo); - fromP= &the_ins.opcode[0]; - for(m=the_ins.numo;m;--m) { - md_number_to_chars(toP,(long)(*fromP),2); - toP+=2; - fromP++; - } - /* put out symbol-dependent info */ - for(m=0;m<the_ins.nrel;m++) { - switch(the_ins.reloc[m].wid) { - case 'B': - n=1; - break; - case 'b': - n=1; - break; - case '3': - n=2; - break; - case 'w': - n=2; - break; - case 'l': - n=4; - break; - default: - as_fatal("Don't know how to figure width of %c in md_assemble()",the_ins.reloc[m].wid); - } - - fix_new(frag_now, - (toP-frag_now->fr_literal)-the_ins.numo*2+the_ins.reloc[m].n, - n, - the_ins.reloc[m].add, - the_ins.reloc[m].sub, - the_ins.reloc[m].off, - the_ins.reloc[m].pcrel, - NO_RELOC); - } - return; - } - - /* There's some frag hacking */ - for(n=0,fromP= &the_ins.opcode[0];n<the_ins.nfrag;n++) { - int wid; - - if(n==0) wid=2*the_ins.fragb[n].fragoff; - else wid=2*(the_ins.numo-the_ins.fragb[n-1].fragoff); - toP=frag_more(wid); - to_beg_P=toP; - shorts_this_frag=0; - for(m=wid/2;m;--m) { - md_number_to_chars(toP,(long)(*fromP),2); - toP+=2; - fromP++; - shorts_this_frag++; - } - for(m=0;m<the_ins.nrel;m++) { - if((the_ins.reloc[m].n)>= 2*shorts_this_frag /* 2*the_ins.fragb[n].fragoff */) { - the_ins.reloc[m].n-= 2*shorts_this_frag /* 2*the_ins.fragb[n].fragoff */; - break; - } - wid=the_ins.reloc[m].wid; - if(wid==0) - continue; - the_ins.reloc[m].wid=0; - wid = (wid=='b') ? 1 : (wid=='w') ? 2 : (wid=='l') ? 4 : 4000; - - fix_new(frag_now, - (toP-frag_now->fr_literal)-the_ins.numo*2+the_ins.reloc[m].n, - wid, - the_ins.reloc[m].add, - the_ins.reloc[m].sub, - the_ins.reloc[m].off, - the_ins.reloc[m].pcrel, - NO_RELOC); - } - /* know(the_ins.fragb[n].fadd); */ - (void)frag_var(rs_machine_dependent,10,0,(relax_substateT)(the_ins.fragb[n].fragty), - the_ins.fragb[n].fadd,the_ins.fragb[n].foff,to_beg_P); - } - n=(the_ins.numo-the_ins.fragb[n-1].fragoff); - shorts_this_frag=0; - if(n) { - toP=frag_more(n*sizeof(short)); - while(n--) { - md_number_to_chars(toP,(long)(*fromP),2); - toP+=2; - fromP++; - shorts_this_frag++; - } - } - for(m=0;m<the_ins.nrel;m++) { - int wid; - - wid=the_ins.reloc[m].wid; - if(wid==0) - continue; - the_ins.reloc[m].wid=0; - wid = (wid=='b') ? 1 : (wid=='w') ? 2 : (wid=='l') ? 4 : 4000; - - fix_new(frag_now, - (the_ins.reloc[m].n + toP-frag_now->fr_literal)- /* the_ins.numo */ shorts_this_frag*2, - wid, - the_ins.reloc[m].add, - the_ins.reloc[m].sub, - the_ins.reloc[m].off, - the_ins.reloc[m].pcrel, - NO_RELOC); - } -} - -/* This function is called once, at assembler startup time. This should - set up all the tables, etc that the MD part of the assembler needs - */ -void - md_begin() -{ - /* - * md_begin -- set up hash tables with 68000 instructions. - * similar to what the vax assembler does. ---phr - */ - /* RMS claims the thing to do is take the m68k-opcode.h table, and make - a copy of it at runtime, adding in the information we want but isn't - there. I think it'd be better to have an awk script hack the table - at compile time. Or even just xstr the table and use it as-is. But - my lord ghod hath spoken, so we do it this way. Excuse the ugly var - names. */ - - register const struct m68k_opcode *ins; - register struct m68k_incant *hack, - *slak; - register char *retval = 0; /* empty string, or error msg text */ - register unsigned int i; - register char c; - - if ((op_hash = hash_new()) == NULL) - as_fatal("Virtual memory exhausted"); - - obstack_begin(&robyn,4000); - for (ins = m68k_opcodes; ins < endop; ins++) { - hack=slak=(struct m68k_incant *)obstack_alloc(&robyn,sizeof(struct m68k_incant)); - do { - /* we *could* ignore insns that don't match our - arch here but just leaving them out of the - hash. */ - slak->m_operands=ins->args; - slak->m_opnum=strlen(slak->m_operands)/2; - slak->m_arch = ins->arch; - slak->m_opcode=ins->opcode; - /* This is kludgey */ - slak->m_codenum=((ins->match)&0xffffL) ? 2 : 1; - if((ins+1)!=endop && !strcmp(ins->name,(ins+1)->name)) { - slak->m_next=(struct m68k_incant *) obstack_alloc(&robyn,sizeof(struct m68k_incant)); - ins++; - } else - slak->m_next=0; - slak=slak->m_next; - } while(slak); - - retval = hash_insert (op_hash, ins->name,(char *)hack); - /* Didn't his mommy tell him about null pointers? */ - if(retval && *retval) - as_fatal("Internal Error: Can't hash %s: %s",ins->name,retval); - } - - for (i = 0; i < sizeof(mklower_table) ; i++) - mklower_table[i] = (isupper(c = (char) i)) ? tolower(c) : c; - - for (i = 0 ; i < sizeof(notend_table) ; i++) { - notend_table[i] = 0; - alt_notend_table[i] = 0; - } - notend_table[','] = 1; - notend_table['{'] = 1; - notend_table['}'] = 1; - alt_notend_table['a'] = 1; - alt_notend_table['A'] = 1; - alt_notend_table['d'] = 1; - alt_notend_table['D'] = 1; - alt_notend_table['#'] = 1; - alt_notend_table['f'] = 1; - alt_notend_table['F'] = 1; - alt_notend_table['('] = 1; - -#ifdef REGISTER_PREFIX - alt_notend_table[REGISTER_PREFIX] = 1; -#endif - - -} - -#if 0 -#define notend(s) ((*s == ',' || *s == '}' || *s == '{' \ - || (*s == ':' && strchr("aAdD#(", s[1]))) \ - ? 0 : 1) -#endif - -/* This funciton is called once, before the assembler exits. It is - supposed to do any final cleanup for this part of the assembler. - */ -void - md_end() -{ -} - -/* Equal to MAX_PRECISION in atof-ieee.c */ -#define MAX_LITTLENUMS 6 - -/* Turn a string in str into a floating point constant of type - type, and store the appropriate bytes in *litP. The number of LITTLENUMS - emitted is stored in *sizeP . An error message is returned, or NULL on OK. - */ -char * - md_atof(type,litP,sizeP) -char type; -char *litP; -int *sizeP; -{ - int prec; - LITTLENUM_TYPE words[MAX_LITTLENUMS]; - LITTLENUM_TYPE *wordP; - char *t; - char *atof_ieee(); - - switch(type) { - case 'f': - case 'F': - case 's': - case 'S': - prec = 2; - break; - - case 'd': - case 'D': - case 'r': - case 'R': - prec = 4; - break; - - case 'x': - case 'X': - prec = 6; - break; - - case 'p': - case 'P': - prec = 6; - break; - - default: - *sizeP=0; - return "Bad call to MD_ATOF()"; - } - t=atof_ieee(input_line_pointer,type,words); - if(t) - input_line_pointer=t; - - *sizeP=prec * sizeof(LITTLENUM_TYPE); - for(wordP=words;prec--;) { - md_number_to_chars(litP,(long)(*wordP++),sizeof(LITTLENUM_TYPE)); - litP+=sizeof(LITTLENUM_TYPE); - } - return ""; /* Someone should teach Dean about null pointers */ -} - -/* Turn an integer of n bytes (in val) into a stream of bytes appropriate - for use in the a.out file, and stores them in the array pointed to by buf. - This knows about the endian-ness of the target machine and does - THE RIGHT THING, whatever it is. Possible values for n are 1 (byte) - 2 (short) and 4 (long) Floating numbers are put out as a series of - LITTLENUMS (shorts, here at least) - */ -void - md_number_to_chars(buf,val,n) -char *buf; -long val; -int n; -{ - switch(n) { - case 1: - *buf++=val; - break; - case 2: - *buf++=(val>>8); - *buf++=val; - break; - case 4: - *buf++=(val>>24); - *buf++=(val>>16); - *buf++=(val>>8); - *buf++=val; - break; - default: - as_fatal("failed sanity check."); - } -} - -void - md_apply_fix(fixP, val) -fixS *fixP; -long val; -{ - char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; - - switch(fixP->fx_size) { - case 1: - *buf++=val; - break; - case 2: - *buf++=(val>>8); - *buf++=val; - break; - case 4: - *buf++=(val>>24); - *buf++=(val>>16); - *buf++=(val>>8); - *buf++=val; - break; - default: - BAD_CASE (fixP->fx_size); - } -} - - -/* *fragP has been relaxed to its final size, and now needs to have - the bytes inside it modified to conform to the new size There is UGLY - MAGIC here. .. - */ -void - md_convert_frag(headers, fragP) -object_headers *headers; -register fragS *fragP; -{ - long disp; - long ext = 0; - - /* Address in object code of the displacement. */ - register int object_address = fragP -> fr_fix + fragP -> fr_address; - -#ifdef IBM_COMPILER_SUX - /* This is wrong but it convinces the native rs6000 compiler to - generate the code we want. */ - register char *buffer_address = fragP -> fr_literal; - buffer_address += fragP -> fr_fix; -#else /* IBM_COMPILER_SUX */ - /* Address in gas core of the place to store the displacement. */ - register char *buffer_address = fragP->fr_fix + fragP->fr_literal; -#endif /* IBM_COMPILER_SUX */ - - /* No longer true: know(fragP->fr_symbol); */ - - /* The displacement of the address, from current location. */ - disp = fragP->fr_symbol ? S_GET_VALUE(fragP->fr_symbol) : 0; - disp = (disp + fragP->fr_offset) - object_address; - - switch(fragP->fr_subtype) { - case TAB(BCC68000,BYTE): - case TAB(BRANCH,BYTE): - know(issbyte(disp)); - if(disp==0) - as_bad("short branch with zero offset: use :w"); - fragP->fr_opcode[1]=disp; - ext=0; - break; - case TAB(DBCC,SHORT): - know(issword(disp)); - ext=2; - break; - case TAB(BCC68000,SHORT): - case TAB(BRANCH,SHORT): - know(issword(disp)); - fragP->fr_opcode[1]=0x00; - ext=2; - break; - case TAB(BRANCH,LONG): - if (cpu_of_arch(current_architecture) < m68020) { - if (fragP->fr_opcode[0]==0x61) { - fragP->fr_opcode[0]= 0x4E; - fragP->fr_opcode[1]= 0xB9; /* JBSR with ABSL LONG offset */ - subseg_change(SEG_TEXT, 0); - - fix_new(fragP, - fragP->fr_fix, - 4, - fragP->fr_symbol, - 0, - fragP->fr_offset, - 0, - NO_RELOC); - - fragP->fr_fix+=4; - ext=0; - } else if (fragP->fr_opcode[0]==0x60) { - fragP->fr_opcode[0]= 0x4E; - fragP->fr_opcode[1]= 0xF9; /* JMP with ABSL LONG offset */ - subseg_change(SEG_TEXT, 0); - fix_new(fragP, fragP->fr_fix, 4, fragP->fr_symbol, 0, fragP->fr_offset,0, - NO_RELOC); - fragP->fr_fix+=4; - ext=0; - } else { - as_bad("Long branch offset not supported."); - } - } else { - fragP->fr_opcode[1]=0xff; - ext=4; - } - break; - case TAB(BCC68000,LONG): - /* only Bcc 68000 instructions can come here */ - /* change bcc into b!cc/jmp absl long */ - fragP->fr_opcode[0] ^= 0x01; /* invert bcc */ - fragP->fr_opcode[1] = 0x6; /* branch offset = 6 */ - - /* JF: these used to be fr_opcode[2,3], but they may be in a - different frag, in which case refering to them is a no-no. - Only fr_opcode[0,1] are guaranteed to work. */ - *buffer_address++ = 0x4e; /* put in jmp long (0x4ef9) */ - *buffer_address++ = 0xf9; - fragP->fr_fix += 2; /* account for jmp instruction */ - subseg_change(SEG_TEXT,0); - fix_new(fragP, fragP->fr_fix, 4, fragP->fr_symbol, 0, - fragP->fr_offset,0, - NO_RELOC); - fragP->fr_fix += 4; - ext=0; - break; - case TAB(DBCC,LONG): - /* only DBcc 68000 instructions can come here */ - /* change dbcc into dbcc/jmp absl long */ - /* JF: these used to be fr_opcode[2-7], but that's wrong */ - *buffer_address++ = 0x00; /* branch offset = 4 */ - *buffer_address++ = 0x04; - *buffer_address++ = 0x60; /* put in bra pc+6 */ - *buffer_address++ = 0x06; - *buffer_address++ = 0x4e; /* put in jmp long (0x4ef9) */ - *buffer_address++ = 0xf9; - - fragP->fr_fix += 6; /* account for bra/jmp instructions */ - subseg_change(SEG_TEXT,0); - fix_new(fragP, fragP->fr_fix, 4, fragP->fr_symbol, 0, - fragP->fr_offset,0, - NO_RELOC); - fragP->fr_fix += 4; - ext=0; - break; - case TAB(FBRANCH,SHORT): - know((fragP->fr_opcode[1]&0x40)==0); - ext=2; - break; - case TAB(FBRANCH,LONG): - fragP->fr_opcode[1]|=0x40; /* Turn on LONG bit */ - ext=4; - break; - case TAB(PCREL,SHORT): - ext=2; - break; - case TAB(PCREL,LONG): - /* The thing to do here is force it to ABSOLUTE LONG, since - PCREL is really trying to shorten an ABSOLUTE address anyway */ - /* JF FOO This code has not been tested */ - subseg_change(SEG_TEXT,0); - fix_new(fragP, fragP->fr_fix, 4, fragP->fr_symbol, 0, fragP->fr_offset, 0, NO_RELOC); - if((fragP->fr_opcode[1] & 0x3F) != 0x3A) - as_bad("Internal error (long PC-relative operand) for insn 0x%04lx at 0x%lx", - fragP->fr_opcode[0],fragP->fr_address); - fragP->fr_opcode[1]&= ~0x3F; - fragP->fr_opcode[1]|=0x39; /* Mode 7.1 */ - fragP->fr_fix+=4; - /* md_number_to_chars(buffer_address, - (long)(fragP->fr_symbol->sy_value + fragP->fr_offset), - 4); */ - ext=0; - break; - case TAB(PCLEA,SHORT): - subseg_change(SEG_TEXT,0); - fix_new(fragP,(int)(fragP->fr_fix),2,fragP->fr_symbol,(symbolS *)0,fragP->fr_offset,1, - NO_RELOC); - fragP->fr_opcode[1] &= ~0x3F; - fragP->fr_opcode[1] |= 0x3A; - ext=2; - break; - case TAB(PCLEA,LONG): - subseg_change(SEG_TEXT,0); - fix_new(fragP,(int)(fragP->fr_fix)+2,4,fragP->fr_symbol,(symbolS *)0,fragP->fr_offset+2,1, - NO_RELOC); - *buffer_address++ = 0x01; - *buffer_address++ = 0x70; - fragP->fr_fix+=2; - /* buffer_address+=2; */ - ext=4; - break; - -} /* switch on subtype */ - - if (ext) { - md_number_to_chars(buffer_address, (long) disp, (int) ext); - fragP->fr_fix += ext; - /* H_SET_TEXT_SIZE(headers, H_GET_TEXT_SIZE(headers) + ext); */ - } /* if extending */ - - return; -} /* md_convert_frag() */ - -/* Force truly undefined symbols to their maximum size, and generally set up - the frag list to be relaxed - */ -int md_estimate_size_before_relax(fragP, segment) -register fragS *fragP; -segT segment; -{ - int old_fix; - register char *buffer_address = fragP->fr_fix + fragP->fr_literal; - - old_fix = fragP->fr_fix; - - /* handle SZ_UNDEF first, it can be changed to BYTE or SHORT */ - switch(fragP->fr_subtype) { - - case TAB(BRANCH,SZ_UNDEF): { - if((fragP->fr_symbol != NULL) /* Not absolute */ - && S_GET_SEGMENT(fragP->fr_symbol) == segment) { - fragP->fr_subtype=TAB(TABTYPE(fragP->fr_subtype),BYTE); - break; - } else if((fragP->fr_symbol == 0) || (cpu_of_arch(current_architecture) < m68020)) { - /* On 68000, or for absolute value, switch to abs long */ - /* FIXME, we should check abs val, pick short or long */ - if(fragP->fr_opcode[0]==0x61) { - fragP->fr_opcode[0]= 0x4E; - fragP->fr_opcode[1]= 0xB9; /* JBSR with ABSL LONG offset */ - subseg_change(SEG_TEXT, 0); - fix_new(fragP, fragP->fr_fix, 4, - fragP->fr_symbol, 0, fragP->fr_offset, 0, NO_RELOC); - fragP->fr_fix+=4; - frag_wane(fragP); - } else if(fragP->fr_opcode[0]==0x60) { - fragP->fr_opcode[0]= 0x4E; - fragP->fr_opcode[1]= 0xF9; /* JMP with ABSL LONG offset */ - subseg_change(SEG_TEXT, 0); - fix_new(fragP, fragP->fr_fix, 4, - fragP->fr_symbol, 0, fragP->fr_offset, 0, NO_RELOC); - fragP->fr_fix+=4; - frag_wane(fragP); - } else { - as_warn("Long branch offset to extern symbol not supported."); - } - } else { /* Symbol is still undefined. Make it simple */ - fix_new(fragP, (int)(fragP->fr_fix), 4, fragP->fr_symbol, - (symbolS *)0, fragP->fr_offset+4, 1, NO_RELOC); - fragP->fr_fix+=4; - fragP->fr_opcode[1]=0xff; - frag_wane(fragP); - break; - } - - break; - } /* case TAB(BRANCH,SZ_UNDEF) */ - - case TAB(FBRANCH,SZ_UNDEF): { - if(S_GET_SEGMENT(fragP->fr_symbol) == segment || flagseen['l']) { - fragP->fr_subtype = TAB(FBRANCH,SHORT); - fragP->fr_var += 2; - } else { - fragP->fr_subtype = TAB(FBRANCH,LONG); - fragP->fr_var += 4; - } - break; - } /* TAB(FBRANCH,SZ_UNDEF) */ - - case TAB(PCREL,SZ_UNDEF): { - if(S_GET_SEGMENT(fragP->fr_symbol) == segment || flagseen['l']) { - fragP->fr_subtype = TAB(PCREL,SHORT); - fragP->fr_var += 2; - } else { - fragP->fr_subtype = TAB(PCREL,LONG); - fragP->fr_var += 4; - } - break; - } /* TAB(PCREL,SZ_UNDEF) */ - - case TAB(BCC68000,SZ_UNDEF): { - if((fragP->fr_symbol != NULL) - && S_GET_SEGMENT(fragP->fr_symbol) == segment) { - fragP->fr_subtype=TAB(BCC68000,BYTE); - break; - } - /* only Bcc 68000 instructions can come here */ - /* change bcc into b!cc/jmp absl long */ - fragP->fr_opcode[0] ^= 0x01; /* invert bcc */ - if(flagseen['l']) { - fragP->fr_opcode[1] = 0x04; /* branch offset = 6 */ - /* JF: these were fr_opcode[2,3] */ - buffer_address[0] = 0x4e; /* put in jmp long (0x4ef9) */ - buffer_address[1] = 0xf8; - fragP->fr_fix += 2; /* account for jmp instruction */ - subseg_change(SEG_TEXT,0); - fix_new(fragP, fragP->fr_fix, 2, fragP->fr_symbol, 0, - fragP->fr_offset, 0, NO_RELOC); - fragP->fr_fix += 2; - } else { - fragP->fr_opcode[1] = 0x06; /* branch offset = 6 */ - /* JF: these were fr_opcode[2,3] */ - buffer_address[2] = 0x4e; /* put in jmp long (0x4ef9) */ - buffer_address[3] = 0xf9; - fragP->fr_fix += 2; /* account for jmp instruction */ - subseg_change(SEG_TEXT,0); - fix_new(fragP, fragP->fr_fix, 4, fragP->fr_symbol, 0, - fragP->fr_offset, 0, NO_RELOC); - fragP->fr_fix += 4; - } - frag_wane(fragP); - break; - } /* case TAB(BCC68000,SZ_UNDEF) */ - - case TAB(DBCC,SZ_UNDEF): { - if (fragP->fr_symbol != NULL && S_GET_SEGMENT(fragP->fr_symbol) == segment) { - fragP->fr_subtype=TAB(DBCC,SHORT); - fragP->fr_var+=2; - break; - } - /* only DBcc 68000 instructions can come here */ - /* change dbcc into dbcc/jmp absl long */ - /* JF: these used to be fr_opcode[2-4], which is wrong. */ - buffer_address[0] = 0x00; /* branch offset = 4 */ - buffer_address[1] = 0x04; - buffer_address[2] = 0x60; /* put in bra pc + ... */ - - if(flagseen['l']) { - /* JF: these were fr_opcode[5-7] */ - buffer_address[3] = 0x04; /* plus 4 */ - buffer_address[4] = 0x4e;/* Put in Jump Word */ - buffer_address[5] = 0xf8; - fragP->fr_fix += 6; /* account for bra/jmp instruction */ - subseg_change(SEG_TEXT,0); - fix_new(fragP, fragP->fr_fix, 2, fragP->fr_symbol, 0, - fragP->fr_offset, 0, NO_RELOC); - fragP->fr_fix += 2; - } else { - /* JF: these were fr_opcode[5-7] */ - buffer_address[3] = 0x06; /* Plus 6 */ - buffer_address[4] = 0x4e; /* put in jmp long (0x4ef9) */ - buffer_address[5] = 0xf9; - fragP->fr_fix += 6; /* account for bra/jmp instruction */ - subseg_change(SEG_TEXT,0); - fix_new(fragP, fragP->fr_fix, 4, fragP->fr_symbol, 0, - fragP->fr_offset, 0, NO_RELOC); - fragP->fr_fix += 4; - } - - frag_wane(fragP); - break; - } /* case TAB(DBCC,SZ_UNDEF) */ - - case TAB(PCLEA,SZ_UNDEF): { - if ((S_GET_SEGMENT(fragP->fr_symbol))==segment || flagseen['l']) { - fragP->fr_subtype=TAB(PCLEA,SHORT); - fragP->fr_var+=2; - } else { - fragP->fr_subtype=TAB(PCLEA,LONG); - fragP->fr_var+=6; - } - break; - } /* TAB(PCLEA,SZ_UNDEF) */ - - default: - break; - - } /* switch on subtype looking for SZ_UNDEF's. */ - - /* now that SZ_UNDEF are taken care of, check others */ - switch(fragP->fr_subtype) { - case TAB(BCC68000,BYTE): - case TAB(BRANCH,BYTE): - /* We can't do a short jump to the next instruction, - so we force word mode. */ - if (fragP->fr_symbol && S_GET_VALUE(fragP->fr_symbol)==0 && - fragP->fr_symbol->sy_frag==fragP->fr_next) { - fragP->fr_subtype=TAB(TABTYPE(fragP->fr_subtype),SHORT); - fragP->fr_var+=2; - } - break; - default: - break; -} - return fragP->fr_var + fragP->fr_fix - old_fix; -} - -#if defined(OBJ_AOUT) | defined(OBJ_BOUT) -/* the bit-field entries in the relocation_info struct plays hell - with the byte-order problems of cross-assembly. So as a hack, - I added this mach. dependent ri twiddler. Ugly, but it gets - you there. -KWK */ -/* on m68k: first 4 bytes are normal unsigned long, next three bytes - are symbolnum, most sig. byte first. Last byte is broken up with - bit 7 as pcrel, bits 6 & 5 as length, bit 4 as pcrel, and the lower - nibble as nuthin. (on Sun 3 at least) */ -/* Translate the internal relocation information into target-specific - format. */ -#ifdef comment -void - md_ri_to_chars(the_bytes, ri) -char *the_bytes; -struct reloc_info_generic *ri; -{ - /* this is easy */ - md_number_to_chars(the_bytes, ri->r_address, 4); - /* now the fun stuff */ - the_bytes[4] = (ri->r_symbolnum >> 16) & 0x0ff; - the_bytes[5] = (ri->r_symbolnum >> 8) & 0x0ff; - the_bytes[6] = ri->r_symbolnum & 0x0ff; - the_bytes[7] = (((ri->r_pcrel << 7) & 0x80) | ((ri->r_length << 5) & 0x60) | - ((ri->r_extern << 4) & 0x10)); -} -#endif /* comment */ - -void tc_aout_fix_to_chars(where, fixP, segment_address_in_file) -char *where; -fixS *fixP; -relax_addressT segment_address_in_file; -{ - /* - * In: length of relocation (or of address) in chars: 1, 2 or 4. - * Out: GNU LD relocation length code: 0, 1, or 2. - */ - - static unsigned char nbytes_r_length [] = { 42, 0, 1, 42, 2 }; - - long r_extern; - long r_symbolnum; - - /* this is easy */ - md_number_to_chars(where, - fixP->fx_frag->fr_address + fixP->fx_where - segment_address_in_file, - 4); - - /* now the fun stuff */ - if (S_GET_TYPE(fixP->fx_addsy) == N_UNDF) { - r_extern = 1; - r_symbolnum = fixP->fx_addsy->sy_number; - } else { - r_extern = 0; - r_symbolnum = S_GET_TYPE(fixP->fx_addsy); - } - - where[4] = (r_symbolnum >> 16) & 0x0ff; - where[5] = (r_symbolnum >> 8) & 0x0ff; - where[6] = r_symbolnum & 0x0ff; - where[7] = (((fixP->fx_pcrel << 7) & 0x80) | ((nbytes_r_length[fixP->fx_size] << 5) & 0x60) | - ((r_extern << 4) & 0x10)); - - return; -} /* tc_aout_fix_to_chars() */ - -#endif /* OBJ_AOUT or OBJ_BOUT */ - -#ifndef WORKING_DOT_WORD -const int md_short_jump_size = 4; -const int md_long_jump_size = 6; - -void - md_create_short_jump(ptr,from_addr,to_addr,frag,to_symbol) -char *ptr; -long from_addr, - to_addr; -fragS *frag; -symbolS *to_symbol; -{ - long offset; - - offset = to_addr - (from_addr+2); - - md_number_to_chars(ptr ,(long)0x6000,2); - md_number_to_chars(ptr+2,(long)offset,2); -} - -void - md_create_long_jump(ptr,from_addr,to_addr,frag,to_symbol) -char *ptr; -long from_addr, - to_addr; -fragS *frag; -symbolS *to_symbol; -{ - long offset; - - if (cpu_of_arch(current_architecture) < m68020) { - offset=to_addr-S_GET_VALUE(to_symbol); - md_number_to_chars(ptr ,(long)0x4EF9,2); - md_number_to_chars(ptr+2,(long)offset,4); - fix_new(frag,(ptr+2)-frag->fr_literal,4,to_symbol,(symbolS *)0,(long)0,0, - NO_RELOC); - } else { - offset=to_addr - (from_addr+2); - md_number_to_chars(ptr ,(long)0x60ff,2); - md_number_to_chars(ptr+2,(long)offset,4); - } -} - -#endif -/* Different values of OK tell what its OK to return. Things that aren't OK are an error (what a shock, no?) - - 0: Everything is OK - 10: Absolute 1:8 only - 20: Absolute 0:7 only - 30: absolute 0:15 only - 40: Absolute 0:31 only - 50: absolute 0:127 only - 55: absolute -64:63 only - 60: absolute -128:127 only - 70: absolute 0:4095 only - 80: No bignums - - */ - -static int get_num(exp,ok) -struct m68k_exp *exp; -int ok; -{ -#ifdef TEST2 - long l = 0; - - if(!exp->e_beg) - return 0; - if(*exp->e_beg=='0') { - if(exp->e_beg[1]=='x') - sscanf(exp->e_beg+2,"%x",&l); - else - sscanf(exp->e_beg+1,"%O",&l); - return l; - } - return atol(exp->e_beg); -#else - char *save_in; - char c_save; - - if(!exp) { - /* Can't do anything */ - return 0; - } - if(!exp->e_beg || !exp->e_end) { - seg(exp)=SEG_ABSOLUTE; - adds(exp)=0; - subs(exp)=0; - offs(exp)= (ok==10) ? 1 : 0; - as_warn("Null expression defaults to %ld",offs(exp)); - return 0; - } - - exp->e_siz=0; - if(/* ok!=80 && */exp->e_end[-1]==SIZER && (exp->e_end-exp->e_beg)>=2) { - switch(exp->e_end[0]) { - case 's': - case 'S': - case 'b': - case 'B': - exp->e_siz=1; - break; - case 'w': - case 'W': - exp->e_siz=2; - break; - case 'l': - case 'L': - exp->e_siz=3; - break; - default: - as_bad("Unknown size for expression \"%c\"",exp->e_end[0]); - } - exp->e_end-=2; - } - c_save=exp->e_end[1]; - exp->e_end[1]='\0'; - save_in=input_line_pointer; - input_line_pointer=exp->e_beg; - switch(expression(&(exp->e_exp))) { - case SEG_PASS1: - seg(exp)=SEG_ABSOLUTE; - adds(exp)=0; - subs(exp)=0; - offs(exp)= (ok==10) ? 1 : 0; - as_warn("Unknown expression: '%s' defaulting to %d",exp->e_beg,offs(exp)); - break; - - case SEG_ABSENT: - /* Do the same thing the VAX asm does */ - seg(exp)=SEG_ABSOLUTE; - adds(exp)=0; - subs(exp)=0; - offs(exp)=0; - if(ok==10) { - as_warn("expression out of range: defaulting to 1"); - offs(exp)=1; - } - break; - case SEG_ABSOLUTE: - switch(ok) { - case 10: - if(offs(exp)<1 || offs(exp)>8) { - as_warn("expression out of range: defaulting to 1"); - offs(exp)=1; - } - break; - case 20: - if(offs(exp)<0 || offs(exp)>7) - goto outrange; - break; - case 30: - if(offs(exp)<0 || offs(exp)>15) - goto outrange; - break; - case 40: - if(offs(exp)<0 || offs(exp)>32) - goto outrange; - break; - case 50: - if(offs(exp)<0 || offs(exp)>127) - goto outrange; - break; - case 55: - if(offs(exp)<-64 || offs(exp)>63) - goto outrange; - break; - case 60: - if(offs(exp)<-128 || offs(exp)>127) - goto outrange; - break; - case 70: - if(offs(exp)<0 || offs(exp)>4095) { - outrange: - as_warn("expression out of range: defaulting to 0"); - offs(exp)=0; - } - break; - default: - break; - } - break; - case SEG_TEXT: - case SEG_DATA: - case SEG_BSS: - case SEG_UNKNOWN: - case SEG_DIFFERENCE: - if(ok>=10 && ok<=70) { - seg(exp)=SEG_ABSOLUTE; - adds(exp)=0; - subs(exp)=0; - offs(exp)= (ok==10) ? 1 : 0; - as_warn("Can't deal with expression \"%s\": defaulting to %ld",exp->e_beg,offs(exp)); - } - break; - case SEG_BIG: - if(ok==80 && offs(exp)<0) { /* HACK! Turn it into a long */ - LITTLENUM_TYPE words[6]; - - gen_to_words(words,2,8L);/* These numbers are magic! */ - seg(exp)=SEG_ABSOLUTE; - adds(exp)=0; - subs(exp)=0; - offs(exp)=words[1]|(words[0]<<16); - } else if(ok!=0) { - seg(exp)=SEG_ABSOLUTE; - adds(exp)=0; - subs(exp)=0; - offs(exp)= (ok==10) ? 1 : 0; - as_warn("Can't deal with expression \"%s\": defaulting to %ld",exp->e_beg,offs(exp)); - } - break; - default: - as_fatal("failed sanity check."); - } - if(input_line_pointer!=exp->e_end+1) - as_bad("Ignoring junk after expression"); - exp->e_end[1]=c_save; - input_line_pointer=save_in; - if(exp->e_siz) { - switch(exp->e_siz) { - case 1: - if(!isbyte(offs(exp))) - as_warn("expression doesn't fit in BYTE"); - break; - case 2: - if(!isword(offs(exp))) - as_warn("expression doesn't fit in WORD"); - break; - } - } - return offs(exp); -#endif -} /* get_num() */ - -/* These are the back-ends for the various machine dependent pseudo-ops. */ -void demand_empty_rest_of_line(); /* Hate those extra verbose names */ - -static void s_data1() { - subseg_new(SEG_DATA,1); - demand_empty_rest_of_line(); -} /* s_data1() */ - -static void s_data2() { - subseg_new(SEG_DATA,2); - demand_empty_rest_of_line(); -} /* s_data2() */ - -static void s_bss() { - /* We don't support putting frags in the BSS segment, but we - can put them into initialized data for now... */ - subseg_new(SEG_DATA,255); /* FIXME-SOON */ - demand_empty_rest_of_line(); -} /* s_bss() */ - -static void s_even() { - register int temp; - register long temp_fill; - - temp = 1; /* JF should be 2? */ - temp_fill = get_absolute_expression (); - if ( ! need_pass_2 ) /* Never make frag if expect extra pass. */ - frag_align (temp, (int)temp_fill); - demand_empty_rest_of_line(); -} /* s_even() */ - -static void s_proc() { - demand_empty_rest_of_line(); -} /* s_proc() */ - -/* s_space is defined in read.c .skip is simply an alias to it. */ - -/* - * md_parse_option - * Invocation line includes a switch not recognized by the base assembler. - * See if it's a processor-specific option. These are: - * - * -[A]m[c]68000, -[A]m[c]68008, -[A]m[c]68010, -[A]m[c]68020, -[A]m[c]68030, -[A]m[c]68040 - * -[A]m[c]68881, -[A]m[c]68882, -[A]m[c]68851 - * Select the architecture. Instructions or features not - * supported by the selected architecture cause fatal - * errors. More than one may be specified. The default is - * -m68020 -m68851 -m68881. Note that -m68008 is a synonym - * for -m68000, and -m68882 is a synonym for -m68881. - * - * MAYBE_FLOAT_TOO is defined below so that specifying a processor type - * (e.g. m68020) also requests that float instructions be included. This - * is the default setup, mostly to avoid hassling users. A better - * rearrangement of this structure would be to add an option to DENY - * floating point opcodes, for people who want to really know there's none - * of that funny floaty stuff going on. FIXME-later. - */ -#ifndef MAYBE_FLOAT_TOO -#define MAYBE_FLOAT_TOO m68881 -#endif - -int md_parse_option(argP,cntP,vecP) -char **argP; -int *cntP; -char ***vecP; -{ - switch(**argP) { - case 'l': /* -l means keep external to 2 bit offset - rather than 16 bit one */ - break; - - case 'S': /* -S means that jbsr's always turn into jsr's. */ - break; - - case 'A': - (*argP)++; - /* intentional fall-through */ - case 'm': - (*argP)++; - - if (**argP=='c') { - (*argP)++; - } /* allow an optional "c" */ - - if (!strcmp(*argP, "68000") - || !strcmp(*argP, "68008")) { - current_architecture |= m68000; - } else if (!strcmp(*argP, "68010")) { -#ifdef TE_SUN - omagic= 1<<16|OMAGIC; -#endif - current_architecture |= m68010; - - } else if (!strcmp(*argP, "68020")) { - current_architecture |= m68020 | MAYBE_FLOAT_TOO; - - } else if (!strcmp(*argP, "68030")) { - current_architecture |= m68030 | MAYBE_FLOAT_TOO; - - } else if (!strcmp(*argP, "68040")) { - current_architecture |= m68040 | MAYBE_FLOAT_TOO; - -#ifndef NO_68881 - } else if (!strcmp(*argP, "68881")) { - current_architecture |= m68881; - - } else if (!strcmp(*argP, "68882")) { - current_architecture |= m68882; - -#endif /* NO_68881 */ -#ifndef NO_68851 - } else if (!strcmp(*argP,"68851")) { - current_architecture |= m68851; - -#endif /* NO_68851 */ - } else { - as_warn("Unknown architecture, \"%s\". option ignored", *argP); - } /* switch on architecture */ - - while(**argP) (*argP)++; - - break; - - case 'p': - if (!strcmp(*argP,"pic")) { - (*argP) += 3; - break; /* -pic, Position Independent Code */ - } else { - return(0); - } /* pic or not */ - - default: - return 0; - } - return 1; -} - - -#ifdef TEST2 - -/* TEST2: Test md_assemble() */ -/* Warning, this routine probably doesn't work anymore */ - -main() -{ - struct m68k_it the_ins; - char buf[120]; - char *cp; - int n; - - m68k_ip_begin(); - for(;;) { - if(!gets(buf) || !*buf) - break; - if(buf[0]=='|' || buf[1]=='.') - continue; - for(cp=buf;*cp;cp++) - if(*cp=='\t') - *cp=' '; - if(is_label(buf)) - continue; - memset(&the_ins, '\0', sizeof(the_ins)); - m68k_ip(&the_ins,buf); - if(the_ins.error) { - printf("Error %s in %s\n",the_ins.error,buf); - } else { - printf("Opcode(%d.%s): ",the_ins.numo,the_ins.args); - for(n=0;n<the_ins.numo;n++) - printf(" 0x%x",the_ins.opcode[n]&0xffff); - printf(" "); - print_the_insn(&the_ins.opcode[0],stdout); - (void)putchar('\n'); - } - for(n=0;n<strlen(the_ins.args)/2;n++) { - if(the_ins.operands[n].error) { - printf("op%d Error %s in %s\n",n,the_ins.operands[n].error,buf); - continue; - } - printf("mode %d, reg %d, ",the_ins.operands[n].mode,the_ins.operands[n].reg); - if(the_ins.operands[n].b_const) - printf("Constant: '%.*s', ",1+the_ins.operands[n].e_const-the_ins.operands[n].b_const,the_ins.operands[n].b_const); - printf("ireg %d, isiz %d, imul %d, ",the_ins.operands[n].ireg,the_ins.operands[n].isiz,the_ins.operands[n].imul); - if(the_ins.operands[n].b_iadd) - printf("Iadd: '%.*s',",1+the_ins.operands[n].e_iadd-the_ins.operands[n].b_iadd,the_ins.operands[n].b_iadd); - (void)putchar('\n'); - } - } - m68k_ip_end(); - return 0; -} - -is_label(str) -char *str; -{ - while(ISSPACE(*str)) - str++; - while(*str && !ISSPACE(*str)) - str++; - if(str[-1]==':' || str[1]=='=') - return 1; - return 0; -} - -#endif - -/* Possible states for relaxation: - - 0 0 branch offset byte (bra, etc) - 0 1 word - 0 2 long - - 1 0 indexed offsets byte a0@(32,d4:w:1) etc - 1 1 word - 1 2 long - - 2 0 two-offset index word-word a0@(32,d4)@(45) etc - 2 1 word-long - 2 2 long-word - 2 3 long-long - - */ - - - -#ifdef DONTDEF -abort() -{ - printf("ABORT!\n"); - exit(12); -} - -print_frags() -{ - fragS *fragP; - extern fragS *text_frag_root; - - for(fragP=text_frag_root;fragP;fragP=fragP->fr_next) { - printf("addr %lu next 0x%x fix %ld var %ld symbol 0x%x offset %ld\n", - fragP->fr_address,fragP->fr_next,fragP->fr_fix,fragP->fr_var,fragP->fr_symbol,fragP->fr_offset); - printf("opcode 0x%x type %d subtype %d\n\n",fragP->fr_opcode,fragP->fr_type,fragP->fr_subtype); - } - fflush(stdout); - return 0; -} -#endif - -#ifdef DONTDEF -/*VARARGS1*/ -panic(format,args) -char *format; -{ - fputs("Internal error:",stderr); - _doprnt(format,&args,stderr); - (void)putc('\n',stderr); - as_where(); - abort(); -} -#endif - -/* We have no need to default values of symbols. */ - -/* ARGSUSED */ -symbolS * - md_undefined_symbol (name) -char *name; -{ - return 0; -} - -/* Parse an operand that is machine-specific. - We just return without modifying the expression if we have nothing - to do. */ - -/* ARGSUSED */ -void - md_operand (expressionP) -expressionS *expressionP; -{ -} - -/* Round up a section size to the appropriate boundary. */ -long - md_section_align (segment, size) -segT segment; -long size; -{ - return size; /* Byte alignment is fine */ -} - -/* Exactly what point is a PC-relative offset relative TO? - On the 68k, they're relative to the address of the offset, plus - its size. (??? Is this right? FIXME-SOON!) */ -long - md_pcrel_from (fixP) -fixS *fixP; -{ - return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; -} - -#ifdef MRI -void s_ds(size) -{ - unsigned int fill = get_absolute_expression() * size; - char *p = frag_var (rs_fill, fill, fill, (relax_substateT)0, (symbolS *)0, - 1, (char *)0); - * p = 0; - demand_empty_rest_of_line(); -} - -void s_dc(size) -{ - - cons(size); - - -} - -void s_dcb(size) -{ - int repeat = get_absolute_expression(); - int fill; - - if (*input_line_pointer == ',') - { - char *p; - input_line_pointer++; - - fill = get_absolute_expression(); - p = frag_var(rs_fill, - size, - size, - (relax_substateT)0, - (symbolS *)0, - repeat, - 0); - md_number_to_chars(p, fill, size); - } - demand_empty_rest_of_line(); - - -} - -void s_chip() -{ - unsigned int target = get_absolute_expression(); -#define MACHINE_MASK (m68000 | m68008 | m68010 | m68020 | m68040) - switch (target) - { - case 68000: - case 68008: - current_architecture = (current_architecture & ~ MACHINE_MASK) | m68000; - break; - case 68010: - current_architecture = (current_architecture & ~ MACHINE_MASK) | m68010; - break; - case 68020: - current_architecture = (current_architecture & ~ MACHINE_MASK) | m68020; - break; - case 68030: - current_architecture = (current_architecture & ~ MACHINE_MASK) | m68030; - break; - case 68040: - current_architecture = (current_architecture & ~ MACHINE_MASK) | m68040; - break; - case 68881: - current_architecture |= m68881; - break; - case 68882: - current_architecture |= m68882; - break; - case 68851: - current_architecture |= m68851; - break; - - default: - as_bad("Unrecognised CHIP %d\n", target); - - } - demand_empty_rest_of_line(); -} - -#endif - -/* - * Local Variables: - * comment-column: 0 - * fill-column: 131 - * End: - */ - -/* end of tc-m68kmote.c */ |
