diff options
Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/pm/linux/pm.c')
| -rw-r--r-- | board/MAI/bios_emulator/scitech/src/pm/linux/pm.c | 1809 |
1 files changed, 0 insertions, 1809 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/linux/pm.c b/board/MAI/bios_emulator/scitech/src/pm/linux/pm.c deleted file mode 100644 index c12a83500a..0000000000 --- a/board/MAI/bios_emulator/scitech/src/pm/linux/pm.c +++ /dev/null @@ -1,1809 +0,0 @@ -;/**************************************************************************** -* -* SciTech OS Portability Manager Library -* -* ======================================================================== -* -* The contents of this file are subject to the SciTech MGL Public -* License Version 1.0 (the "License"); you may not use this file -* except in compliance with the License. You may obtain a copy of -* the License at http://www.scitechsoft.com/mgl-license.txt -* -* Software distributed under the License is distributed on an -* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or -* implied. See the License for the specific language governing -* rights and limitations under the License. -* -* The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc. -* -* The Initial Developer of the Original Code is SciTech Software, Inc. -* All Rights Reserved. -* -* ======================================================================== -* -* Portions copyright (C) Josh Vanderhoof -* -* Language: ANSI C -* Environment: Linux -* -* Description: Implementation for the OS Portability Manager Library, which -* contains functions to implement OS specific services in a -* generic, cross platform API. Porting the OS Portability -* Manager library is the first step to porting any SciTech -* products to a new platform. -* -****************************************************************************/ - -#include "pmapi.h" -#include "drvlib/os/os.h" -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/mman.h> -#include <sys/kd.h> -#include <sys/ioctl.h> -#include <sys/stat.h> -#include <sys/vt.h> -#include <sys/wait.h> -#include <sys/types.h> -#include <sys/time.h> -#include <unistd.h> -#include <termios.h> -#include <fcntl.h> -#include <syscall.h> -#include <signal.h> -#include <time.h> -#include <ctype.h> -#include <errno.h> -#include <asm/io.h> -#include <asm/types.h> -#ifdef ENABLE_MTRR -#include <asm/mtrr.h> -#endif -#include <asm/vm86.h> -#ifdef __GLIBC__ -#include <sys/perm.h> -#endif - -/*--------------------------- Global variables ----------------------------*/ - -#define REAL_MEM_BASE ((void *)0x10000) -#define REAL_MEM_SIZE 0x10000 -#define REAL_MEM_BLOCKS 0x100 -#define DEFAULT_VM86_FLAGS (IF_MASK | IOPL_MASK) -#define DEFAULT_STACK_SIZE 0x1000 -#define RETURN_TO_32_INT 255 - -/* Quick and dirty fix for vm86() syscall from lrmi 0.6 */ -static int -vm86(struct vm86_struct *vm) - { - int r; -#ifdef __PIC__ - asm volatile ( - "pushl %%ebx\n\t" - "movl %2, %%ebx\n\t" - "int $0x80\n\t" - "popl %%ebx" - : "=a" (r) - : "0" (113), "r" (vm)); -#else - asm volatile ( - "int $0x80" - : "=a" (r) - : "0" (113), "b" (vm)); -#endif - return r; - } - - -static struct { - int ready; - unsigned short ret_seg, ret_off; - unsigned short stack_seg, stack_off; - struct vm86_struct vm; - } context = {0}; - -struct mem_block { - unsigned int size : 20; - unsigned int free : 1; - }; - -static struct { - int ready; - int count; - struct mem_block blocks[REAL_MEM_BLOCKS]; - } mem_info = {0}; - -int _PM_console_fd = -1; -int _PM_leds = 0,_PM_modifiers = 0; -static ibool inited = false; -static int tty_vc = 0; -static int console_count = 0; -static int startup_vc; -static int fd_mem = 0; -static ibool in_raw_mode = false; -#ifdef ENABLE_MTRR -static int mtrr_fd; -#endif -static uint VESABuf_len = 1024; /* Length of the VESABuf buffer */ -static void *VESABuf_ptr = NULL; /* Near pointer to VESABuf */ -static uint VESABuf_rseg; /* Real mode segment of VESABuf */ -static uint VESABuf_roff; /* Real mode offset of VESABuf */ -#ifdef TRACE_IO -static ulong traceAddr; -#endif - -static void (PMAPIP fatalErrorCleanup)(void) = NULL; - -/*----------------------------- Implementation ----------------------------*/ - -#ifdef TRACE_IO -extern void printk(char *msg,...); -#endif - -static inline void port_out(int value, int port) -{ -#ifdef TRACE_IO - printk("%04X:%04X: outb.%04X <- %02X\n", traceAddr >> 16, traceAddr & 0xFFFF, (ushort)port, (uchar)value); -#endif - asm volatile ("outb %0,%1" - ::"a" ((unsigned char) value), "d"((unsigned short) port)); -} - -static inline void port_outw(int value, int port) -{ -#ifdef TRACE_IO - printk("%04X:%04X: outw.%04X <- %04X\n", traceAddr >> 16,traceAddr & 0xFFFF, (ushort)port, (ushort)value); -#endif - asm volatile ("outw %0,%1" - ::"a" ((unsigned short) value), "d"((unsigned short) port)); -} - -static inline void port_outl(int value, int port) -{ -#ifdef TRACE_IO - printk("%04X:%04X: outl.%04X <- %08X\n", traceAddr >> 16,traceAddr & 0xFFFF, (ushort)port, (ulong)value); -#endif - asm volatile ("outl %0,%1" - ::"a" ((unsigned long) value), "d"((unsigned short) port)); -} - -static inline unsigned int port_in(int port) -{ - unsigned char value; - asm volatile ("inb %1,%0" - :"=a" ((unsigned char)value) - :"d"((unsigned short) port)); -#ifdef TRACE_IO - printk("%04X:%04X: inb.%04X -> %02X\n", traceAddr >> 16,traceAddr & 0xFFFF, (ushort)port, (uchar)value); -#endif - return value; -} - -static inline unsigned int port_inw(int port) -{ - unsigned short value; - asm volatile ("inw %1,%0" - :"=a" ((unsigned short)value) - :"d"((unsigned short) port)); -#ifdef TRACE_IO - printk("%04X:%04X: inw.%04X -> %04X\n", traceAddr >> 16,traceAddr & 0xFFFF, (ushort)port, (ushort)value); -#endif - return value; -} - -static inline unsigned int port_inl(int port) -{ - unsigned long value; - asm volatile ("inl %1,%0" - :"=a" ((unsigned long)value) - :"d"((unsigned short) port)); -#ifdef TRACE_IO - printk("%04X:%04X: inl.%04X -> %08X\n", traceAddr >> 16,traceAddr & 0xFFFF, (ushort)port, (ulong)value); -#endif - return value; -} - -static int real_mem_init(void) -{ - void *m; - int fd_zero; - - if (mem_info.ready) - return 1; - - if ((fd_zero = open("/dev/zero", O_RDONLY)) == -1) - PM_fatalError("You must have root privledges to run this program!"); - if ((m = mmap((void *)REAL_MEM_BASE, REAL_MEM_SIZE, - PROT_READ | PROT_WRITE | PROT_EXEC, - MAP_FIXED | MAP_PRIVATE, fd_zero, 0)) == (void *)-1) { - close(fd_zero); - PM_fatalError("You must have root privledges to run this program!"); - } - mem_info.ready = 1; - mem_info.count = 1; - mem_info.blocks[0].size = REAL_MEM_SIZE; - mem_info.blocks[0].free = 1; - return 1; -} - -static void insert_block(int i) -{ - memmove( - mem_info.blocks + i + 1, - mem_info.blocks + i, - (mem_info.count - i) * sizeof(struct mem_block)); - mem_info.count++; -} - -static void delete_block(int i) -{ - mem_info.count--; - - memmove( - mem_info.blocks + i, - mem_info.blocks + i + 1, - (mem_info.count - i) * sizeof(struct mem_block)); -} - -static inline void set_bit(unsigned int bit, void *array) -{ - unsigned char *a = array; - a[bit / 8] |= (1 << (bit % 8)); -} - -static inline unsigned int get_int_seg(int i) -{ - return *(unsigned short *)(i * 4 + 2); -} - -static inline unsigned int get_int_off(int i) -{ - return *(unsigned short *)(i * 4); -} - -static inline void pushw(unsigned short i) -{ - struct vm86_regs *r = &context.vm.regs; - r->esp -= 2; - *(unsigned short *)(((unsigned int)r->ss << 4) + r->esp) = i; -} - -ibool PMAPI PM_haveBIOSAccess(void) -{ return true; } - -void PMAPI PM_init(void) -{ - void *m; - uint r_seg,r_off; - - if (inited) - return; - - /* Map the Interrupt Vectors (0x0 - 0x400) + BIOS data (0x400 - 0x502) - * and the physical framebuffer and ROM images from (0xa0000 - 0x100000) - */ - real_mem_init(); - if (!fd_mem && (fd_mem = open("/dev/mem", O_RDWR)) == -1) { - PM_fatalError("You must have root privileges to run this program!"); - } - if ((m = mmap((void *)0, 0x502, - PROT_READ | PROT_WRITE | PROT_EXEC, - MAP_FIXED | MAP_PRIVATE, fd_mem, 0)) == (void *)-1) { - PM_fatalError("You must have root privileges to run this program!"); - } - if ((m = mmap((void *)0xA0000, 0xC0000 - 0xA0000, - PROT_READ | PROT_WRITE, - MAP_FIXED | MAP_SHARED, fd_mem, 0xA0000)) == (void *)-1) { - PM_fatalError("You must have root privileges to run this program!"); - } - if ((m = mmap((void *)0xC0000, 0xD0000 - 0xC0000, - PROT_READ | PROT_WRITE | PROT_EXEC, - MAP_FIXED | MAP_PRIVATE, fd_mem, 0xC0000)) == (void *)-1) { - PM_fatalError("You must have root privileges to run this program!"); - } - if ((m = mmap((void *)0xD0000, 0x100000 - 0xD0000, - PROT_READ | PROT_WRITE, - MAP_FIXED | MAP_SHARED, fd_mem, 0xD0000)) == (void *)-1) { - PM_fatalError("You must have root privileges to run this program!"); - } - inited = 1; - - /* Allocate a stack */ - m = PM_allocRealSeg(DEFAULT_STACK_SIZE,&r_seg,&r_off); - context.stack_seg = r_seg; - context.stack_off = r_off+DEFAULT_STACK_SIZE; - - /* Allocate the return to 32 bit routine */ - m = PM_allocRealSeg(2,&r_seg,&r_off); - context.ret_seg = r_seg; - context.ret_off = r_off; - ((uchar*)m)[0] = 0xCD; /* int opcode */ - ((uchar*)m)[1] = RETURN_TO_32_INT; - memset(&context.vm, 0, sizeof(context.vm)); - - /* Enable kernel emulation of all ints except RETURN_TO_32_INT */ - memset(&context.vm.int_revectored, 0, sizeof(context.vm.int_revectored)); - set_bit(RETURN_TO_32_INT, &context.vm.int_revectored); - context.ready = 1; -#ifdef ENABLE_MTRR - mtrr_fd = open("/dev/cpu/mtrr", O_RDWR, 0); - if (mtrr_fd < 0) - mtrr_fd = open("/proc/mtrr", O_RDWR, 0); -#endif - /* Enable I/O permissions to directly access I/O ports. We break the - * allocation into two parts, one for the ports from 0-0x3FF and - * another for the remaining ports up to 0xFFFF. Standard Linux kernels - * only allow the first 0x400 ports to be enabled, so to enable all - * 65536 ports you need a patched kernel that will enable the full - * 8Kb I/O permissions bitmap. - */ -#ifndef TRACE_IO - ioperm(0x0,0x400,1); - ioperm(0x400,0x10000-0x400,1); -#endif - iopl(3); -} - -long PMAPI PM_getOSType(void) -{ return _OS_LINUX; } - -int PMAPI PM_getModeType(void) -{ return PM_386; } - -void PMAPI PM_backslash(char *s) -{ - uint pos = strlen(s); - if (s[pos-1] != '/') { - s[pos] = '/'; - s[pos+1] = '\0'; - } -} - -void PMAPI PM_setFatalErrorCleanup( - void (PMAPIP cleanup)(void)) -{ - fatalErrorCleanup = cleanup; -} - -void PMAPI PM_fatalError(const char *msg) -{ - if (fatalErrorCleanup) - fatalErrorCleanup(); - fprintf(stderr,"%s\n", msg); - fflush(stderr); - exit(1); -} - -static void ExitVBEBuf(void) -{ - if (VESABuf_ptr) - PM_freeRealSeg(VESABuf_ptr); - VESABuf_ptr = 0; -} - -void * PMAPI PM_getVESABuf(uint *len,uint *rseg,uint *roff) -{ - if (!VESABuf_ptr) { - /* Allocate a global buffer for communicating with the VESA VBE */ - if ((VESABuf_ptr = PM_allocRealSeg(VESABuf_len, &VESABuf_rseg, &VESABuf_roff)) == NULL) - return NULL; - atexit(ExitVBEBuf); - } - *len = VESABuf_len; - *rseg = VESABuf_rseg; - *roff = VESABuf_roff; - return VESABuf_ptr; -} - -/* New raw console based getch and kbhit functions */ - -#define KB_CAPS LED_CAP /* 4 */ -#define KB_NUMLOCK LED_NUM /* 2 */ -#define KB_SCROLL LED_SCR /* 1 */ -#define KB_SHIFT 8 -#define KB_CONTROL 16 -#define KB_ALT 32 - -/* Structure used to save the keyboard mode to disk. We save it to disk - * so that we can properly restore the mode later if the program crashed. - */ - -typedef struct { - struct termios termios; - int kb_mode; - int leds; - int flags; - int startup_vc; - } keyboard_mode; - -/* Name of the file used to save keyboard mode information */ - -#define KBMODE_DAT "kbmode.dat" - -/**************************************************************************** -REMARKS: -Open the keyboard mode file on disk. -****************************************************************************/ -static FILE *open_kb_mode( - char *mode, - char *path) -{ - if (!PM_findBPD("graphics.bpd",path)) - return NULL; - PM_backslash(path); - strcat(path,KBMODE_DAT); - return fopen(path,mode); -} - -/**************************************************************************** -REMARKS: -Restore the keyboard to normal mode -****************************************************************************/ -void _PM_restore_kb_mode(void) -{ - FILE *kbmode; - keyboard_mode mode; - char path[PM_MAX_PATH]; - - if (_PM_console_fd != -1 && (kbmode = open_kb_mode("rb",path)) != NULL) { - if (fread(&mode,1,sizeof(mode),kbmode) == sizeof(mode)) { - if (mode.startup_vc > 0) - ioctl(_PM_console_fd, VT_ACTIVATE, mode.startup_vc); - ioctl(_PM_console_fd, KDSKBMODE, mode.kb_mode); - ioctl(_PM_console_fd, KDSETLED, mode.leds); - tcsetattr(_PM_console_fd, TCSAFLUSH, &mode.termios); - fcntl(_PM_console_fd,F_SETFL,mode.flags); - } - fclose(kbmode); - unlink(path); - in_raw_mode = false; - } -} - -/**************************************************************************** -REMARKS: -Safely abort the event module upon catching a fatal error. -****************************************************************************/ -void _PM_abort( - int signo) -{ - char buf[80]; - - sprintf(buf,"Terminating on signal %d",signo); - _PM_restore_kb_mode(); - PM_fatalError(buf); -} - -/**************************************************************************** -REMARKS: -Put the keyboard into raw mode -****************************************************************************/ -void _PM_keyboard_rawmode(void) -{ - struct termios conf; - FILE *kbmode; - keyboard_mode mode; - char path[PM_MAX_PATH]; - int i; - static int sig_list[] = { - SIGHUP, - SIGINT, - SIGQUIT, - SIGILL, - SIGTRAP, - SIGABRT, - SIGIOT, - SIGBUS, - SIGFPE, - SIGKILL, - SIGSEGV, - SIGTERM, - }; - - if ((kbmode = open_kb_mode("rb",path)) == NULL) { - if ((kbmode = open_kb_mode("wb",path)) == NULL) - PM_fatalError("Unable to open kbmode.dat file for writing!"); - if (ioctl(_PM_console_fd, KDGKBMODE, &mode.kb_mode)) - perror("KDGKBMODE"); - ioctl(_PM_console_fd, KDGETLED, &mode.leds); - _PM_leds = mode.leds & 0xF; - _PM_modifiers = 0; - tcgetattr(_PM_console_fd, &mode.termios); - conf = mode.termios; - conf.c_lflag &= ~(ICANON | ECHO | ISIG); - conf.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | BRKINT | PARMRK | INPCK | IUCLC | IXON | IXOFF); - conf.c_iflag |= (IGNBRK | IGNPAR); - conf.c_cc[VMIN] = 1; - conf.c_cc[VTIME] = 0; - conf.c_cc[VSUSP] = 0; - tcsetattr(_PM_console_fd, TCSAFLUSH, &conf); - mode.flags = fcntl(_PM_console_fd,F_GETFL); - if (ioctl(_PM_console_fd, KDSKBMODE, K_MEDIUMRAW)) - perror("KDSKBMODE"); - atexit(_PM_restore_kb_mode); - for (i = 0; i < sizeof(sig_list)/sizeof(sig_list[0]); i++) - signal(sig_list[i], _PM_abort); - mode.startup_vc = startup_vc; - if (fwrite(&mode,1,sizeof(mode),kbmode) != sizeof(mode)) - PM_fatalError("Error writing kbmode.dat!"); - fclose(kbmode); - in_raw_mode = true; - } -} - -int PMAPI PM_kbhit(void) -{ - fd_set s; - struct timeval tv = { 0, 0 }; - - if (console_count == 0) - PM_fatalError("You *must* open a console before using PM_kbhit!"); - if (!in_raw_mode) - _PM_keyboard_rawmode(); - FD_ZERO(&s); - FD_SET(_PM_console_fd, &s); - return select(_PM_console_fd+1, &s, NULL, NULL, &tv) > 0; -} - -int PMAPI PM_getch(void) -{ - static uchar c; - int release; - static struct kbentry ke; - - if (console_count == 0) - PM_fatalError("You *must* open a console before using PM_getch!"); - if (!in_raw_mode) - _PM_keyboard_rawmode(); - while (read(_PM_console_fd, &c, 1) > 0) { - release = c & 0x80; - c &= 0x7F; - if (release) { - switch(c){ - case 42: case 54: /* Shift */ - _PM_modifiers &= ~KB_SHIFT; - break; - case 29: case 97: /* Control */ - _PM_modifiers &= ~KB_CONTROL; - break; - case 56: case 100: /* Alt / AltGr */ - _PM_modifiers &= ~KB_ALT; - break; - } - continue; - } - switch (c) { - case 42: case 54: /* Shift */ - _PM_modifiers |= KB_SHIFT; - break; - case 29: case 97: /* Control */ - _PM_modifiers |= KB_CONTROL; - break; - case 56: case 100: /* Alt / AltGr */ - _PM_modifiers |= KB_ALT; - break; - case 58: /* Caps Lock */ - _PM_modifiers ^= KB_CAPS; - ioctl(_PM_console_fd, KDSETLED, _PM_modifiers & 7); - break; - case 69: /* Num Lock */ - _PM_modifiers ^= KB_NUMLOCK; - ioctl(_PM_console_fd, KDSETLED, _PM_modifiers & 7); - break; - case 70: /* Scroll Lock */ - _PM_modifiers ^= KB_SCROLL; - ioctl(_PM_console_fd, KDSETLED, _PM_modifiers & 7); - break; - case 28: - return 0x1C; - default: - ke.kb_index = c; - ke.kb_table = 0; - if ((_PM_modifiers & KB_SHIFT) || (_PM_modifiers & KB_CAPS)) - ke.kb_table |= K_SHIFTTAB; - if (_PM_modifiers & KB_ALT) - ke.kb_table |= K_ALTTAB; - ioctl(_PM_console_fd, KDGKBENT, (ulong)&ke); - c = ke.kb_value & 0xFF; - return c; - } - } - return 0; -} - -/**************************************************************************** -REMARKS: -Sleep until the virtual terminal is active -****************************************************************************/ -static void wait_vt_active( - int _PM_console_fd) -{ - while (ioctl(_PM_console_fd, VT_WAITACTIVE, tty_vc) < 0) { - if ((errno != EAGAIN) && (errno != EINTR)) { - perror("ioctl(VT_WAITACTIVE)"); - exit(1); - } - usleep(150000); - } -} - -/**************************************************************************** -REMARKS: -Checks the owner of the specified virtual console. -****************************************************************************/ -static int check_owner( - int vc) -{ - struct stat sbuf; - char fname[30]; - - sprintf(fname, "/dev/tty%d", vc); - if ((stat(fname, &sbuf) >= 0) && (getuid() == sbuf.st_uid)) - return 1; - printf("You must be the owner of the current console to use this program.\n"); - return 0; -} - -/**************************************************************************** -REMARKS: -Checks if the console is currently in graphics mode, and if so we forcibly -restore it back to text mode again. This handles the case when a Nucleus or -MGL program crashes and leaves the console in graphics mode. Running the -textmode utility (or any other Nucleus/MGL program) via a telnet session -into the machine will restore it back to normal. -****************************************************************************/ -static void restore_text_console( - int console_id) -{ - if (ioctl(console_id, KDSETMODE, KD_TEXT) < 0) - LOGWARN("ioctl(KDSETMODE) failed"); - _PM_restore_kb_mode(); -} - -/**************************************************************************** -REMARKS: -Opens up the console device for output by finding an appropriate virutal -console that we can run on. -****************************************************************************/ -PM_HWND PMAPI PM_openConsole( - PM_HWND hwndUser, - int device, - int xRes, - int yRes, - int bpp, - ibool fullScreen) -{ - struct vt_mode vtm; - struct vt_stat vts; - struct stat sbuf; - char fname[30]; - - /* Check if we have already opened the console */ - if (console_count++) - return _PM_console_fd; - - /* Now, it would be great if we could use /dev/tty and see what it is - * connected to. Alas, we cannot find out reliably what VC /dev/tty is - * bound to. Thus we parse stdin through stderr for a reliable VC. - */ - startup_vc = 0; - for (_PM_console_fd = 0; _PM_console_fd < 3; _PM_console_fd++) { - if (fstat(_PM_console_fd, &sbuf) < 0) - continue; - if (ioctl(_PM_console_fd, VT_GETMODE, &vtm) < 0) - continue; - if ((sbuf.st_rdev & 0xFF00) != 0x400) - continue; - if (!(sbuf.st_rdev & 0xFF)) - continue; - tty_vc = sbuf.st_rdev & 0xFF; - restore_text_console(_PM_console_fd); - return _PM_console_fd; - } - if ((_PM_console_fd = open("/dev/console", O_RDWR)) < 0) { - printf("open_dev_console: can't open /dev/console \n"); - exit(1); - } - if (ioctl(_PM_console_fd, VT_OPENQRY, &tty_vc) < 0) - goto Error; - if (tty_vc <= 0) - goto Error; - sprintf(fname, "/dev/tty%d", tty_vc); - close(_PM_console_fd); - - /* Change our control terminal */ - setsid(); - - /* We must use RDWR to allow for output... */ - if (((_PM_console_fd = open(fname, O_RDWR)) >= 0) && - (ioctl(_PM_console_fd, VT_GETSTATE, &vts) >= 0)) { - if (!check_owner(vts.v_active)) - goto Error; - restore_text_console(_PM_console_fd); - - /* Success, redirect all stdios */ - fflush(stdin); - fflush(stdout); - fflush(stderr); - close(0); - close(1); - close(2); - dup(_PM_console_fd); - dup(_PM_console_fd); - dup(_PM_console_fd); - - /* clear screen and switch to it */ - fwrite("\e[H\e[J", 6, 1, stderr); - fflush(stderr); - if (tty_vc != vts.v_active) { - startup_vc = vts.v_active; - ioctl(_PM_console_fd, VT_ACTIVATE, tty_vc); - wait_vt_active(_PM_console_fd); - } - } - return _PM_console_fd; - -Error: - if (_PM_console_fd > 2) - close(_PM_console_fd); - console_count = 0; - PM_fatalError( - "Not running in a graphics capable console,\n" - "and unable to find one.\n"); - return -1; -} - -#define FONT_C 0x10000 /* 64KB for font data */ - -/**************************************************************************** -REMARKS: -Returns the size of the console state buffer. -****************************************************************************/ -int PMAPI PM_getConsoleStateSize(void) -{ - if (!inited) - PM_init(); - return PM_getVGAStateSize() + FONT_C*2; -} - -/**************************************************************************** -REMARKS: -Save the state of the Linux console. -****************************************************************************/ -void PMAPI PM_saveConsoleState(void *stateBuf,int console_id) -{ - uchar *regs = stateBuf; - - /* Save the current console font */ - if (ioctl(console_id,GIO_FONT,®s[PM_getVGAStateSize()]) < 0) - perror("ioctl(GIO_FONT)"); - - /* Inform the Linux console that we are going into graphics mode */ - if (ioctl(console_id, KDSETMODE, KD_GRAPHICS) < 0) - perror("ioctl(KDSETMODE)"); - - /* Save state of VGA registers */ - PM_saveVGAState(stateBuf); -} - -void PMAPI PM_setSuspendAppCallback(int (_ASMAPIP saveState)(int flags)) -{ - /* TODO: Implement support for allowing console switching! */ -} - -/**************************************************************************** -REMARKS: -Restore the state of the Linux console. -****************************************************************************/ -void PMAPI PM_restoreConsoleState(const void *stateBuf,PM_HWND console_id) -{ - const uchar *regs = stateBuf; - - /* Restore the state of the VGA compatible registers */ - PM_restoreVGAState(stateBuf); - - /* Inform the Linux console that we are back from graphics modes */ - if (ioctl(console_id, KDSETMODE, KD_TEXT) < 0) - LOGWARN("ioctl(KDSETMODE) failed"); - - /* Restore the old console font */ - if (ioctl(console_id,PIO_FONT,®s[PM_getVGAStateSize()]) < 0) - LOGWARN("ioctl(KDSETMODE) failed"); - - /* Coming back from graphics mode on Linux also restored the previous - * text mode console contents, so we need to clear the screen to get - * around this since the cursor does not get homed by our code. - */ - fflush(stdout); - fflush(stderr); - printf("\033[H\033[J"); - fflush(stdout); -} - -/**************************************************************************** -REMARKS: -Close the Linux console and put it back to normal. -****************************************************************************/ -void PMAPI PM_closeConsole(PM_HWND _PM_console_fd) -{ - /* Restore console to normal operation */ - if (--console_count == 0) { - /* Re-activate the original virtual console */ - if (startup_vc > 0) - ioctl(_PM_console_fd, VT_ACTIVATE, startup_vc); - - /* Close the console file descriptor */ - if (_PM_console_fd > 2) - close(_PM_console_fd); - _PM_console_fd = -1; - } -} - -void PM_setOSCursorLocation(int x,int y) -{ - /* Nothing to do in here */ -} - -/**************************************************************************** -REMARKS: -Set the screen width and height for the Linux console. -****************************************************************************/ -void PM_setOSScreenWidth(int width,int height) -{ - struct winsize ws; - struct vt_sizes vs; - - /* Resize the software terminal */ - ws.ws_col = width; - ws.ws_row = height; - ioctl(_PM_console_fd, TIOCSWINSZ, &ws); - - /* And the hardware */ - vs.v_rows = height; - vs.v_cols = width; - vs.v_scrollsize = 0; - ioctl(_PM_console_fd, VT_RESIZE, &vs); -} - -ibool PMAPI PM_setRealTimeClockHandler(PM_intHandler ih, int frequency) -{ - /* TODO: Implement this for Linux */ - return false; -} - -void PMAPI PM_setRealTimeClockFrequency(int frequency) -{ - /* TODO: Implement this for Linux */ -} - -void PMAPI PM_restoreRealTimeClockHandler(void) -{ - /* TODO: Implement this for Linux */ -} - -char * PMAPI PM_getCurrentPath( - char *path, - int maxLen) -{ - return getcwd(path,maxLen); -} - -char PMAPI PM_getBootDrive(void) -{ return '/'; } - -const char * PMAPI PM_getVBEAFPath(void) -{ return PM_getNucleusConfigPath(); } - -const char * PMAPI PM_getNucleusPath(void) -{ - char *env = getenv("NUCLEUS_PATH"); - return env ? env : "/usr/lib/nucleus"; -} - -const char * PMAPI PM_getNucleusConfigPath(void) -{ - static char path[256]; - strcpy(path,PM_getNucleusPath()); - PM_backslash(path); - strcat(path,"config"); - return path; -} - -const char * PMAPI PM_getUniqueID(void) -{ - static char buf[128]; - gethostname(buf, 128); - return buf; -} - -const char * PMAPI PM_getMachineName(void) -{ - static char buf[128]; - gethostname(buf, 128); - return buf; -} - -void * PMAPI PM_getBIOSPointer(void) -{ - static uchar *zeroPtr = NULL; - if (!zeroPtr) - zeroPtr = PM_mapPhysicalAddr(0,0xFFFFF,true); - return (void*)(zeroPtr + 0x400); -} - -void * PMAPI PM_getA0000Pointer(void) -{ - /* PM_init maps in the 0xA0000 framebuffer region 1:1 with our - * address mapping, so we can return the address here. - */ - if (!inited) - PM_init(); - return (void*)(0xA0000); -} - -void * PMAPI PM_mapPhysicalAddr(ulong base,ulong limit,ibool isCached) -{ - uchar *p; - ulong baseAddr,baseOfs; - - if (!inited) - PM_init(); - if (base >= 0xA0000 && base < 0x100000) - return (void*)base; - if (!fd_mem && (fd_mem = open("/dev/mem", O_RDWR)) == -1) - return NULL; - - /* Round the physical address to a 4Kb boundary and the limit to a - * 4Kb-1 boundary before passing the values to mmap. If we round the - * physical address, then we also add an extra offset into the address - * that we return. - */ - baseOfs = base & 4095; - baseAddr = base & ~4095; - limit = ((limit+baseOfs+1+4095) & ~4095)-1; - if ((p = mmap(0, limit+1, - PROT_READ | PROT_WRITE, MAP_SHARED, - fd_mem, baseAddr)) == (void *)-1) - return NULL; - return (void*)(p+baseOfs); -} - -void PMAPI PM_freePhysicalAddr(void *ptr,ulong limit) -{ - if ((ulong)ptr >= 0x100000) - munmap(ptr,limit+1); -} - -ulong PMAPI PM_getPhysicalAddr(void *p) -{ - /* TODO: This function should find the physical address of a linear */ - /* address. */ - return 0xFFFFFFFFUL; -} - -ibool PMAPI PM_getPhysicalAddrRange(void *p,ulong length,ulong *physAddress) -{ - /* TODO: This function should find a range of physical addresses */ - /* for a linear address. */ - return false; -} - -void PMAPI PM_sleep(ulong milliseconds) -{ - /* TODO: Put the process to sleep for milliseconds */ -} - -int PMAPI PM_getCOMPort(int port) -{ - /* TODO: Re-code this to determine real values using the Plug and Play */ - /* manager for the OS. */ - switch (port) { - case 0: return 0x3F8; - case 1: return 0x2F8; - } - return 0; -} - -int PMAPI PM_getLPTPort(int port) -{ - /* TODO: Re-code this to determine real values using the Plug and Play */ - /* manager for the OS. */ - switch (port) { - case 0: return 0x3BC; - case 1: return 0x378; - case 2: return 0x278; - } - return 0; -} - -void * PMAPI PM_mallocShared(long size) -{ - return PM_malloc(size); -} - -void PMAPI PM_freeShared(void *ptr) -{ - PM_free(ptr); -} - -void * PMAPI PM_mapToProcess(void *base,ulong limit) -{ return (void*)base; } - -void * PMAPI PM_mapRealPointer(uint r_seg,uint r_off) -{ - /* PM_init maps in the 0xA0000-0x100000 region 1:1 with our - * address mapping, as well as all memory blocks in a 1:1 address - * mapping so we can simply return the physical address in here. - */ - if (!inited) - PM_init(); - return (void*)MK_PHYS(r_seg,r_off); -} - -void * PMAPI PM_allocRealSeg(uint size,uint *r_seg,uint *r_off) -{ - int i; - char *r = (char *)REAL_MEM_BASE; - - if (!inited) - PM_init(); - if (!mem_info.ready) - return NULL; - if (mem_info.count == REAL_MEM_BLOCKS) - return NULL; - size = (size + 15) & ~15; - for (i = 0; i < mem_info.count; i++) { - if (mem_info.blocks[i].free && size < mem_info.blocks[i].size) { - insert_block(i); - mem_info.blocks[i].size = size; - mem_info.blocks[i].free = 0; - mem_info.blocks[i + 1].size -= size; - *r_seg = (uint)(r) >> 4; - *r_off = (uint)(r) & 0xF; - return (void *)r; - } - r += mem_info.blocks[i].size; - } - return NULL; -} - -void PMAPI PM_freeRealSeg(void *mem) -{ - int i; - char *r = (char *)REAL_MEM_BASE; - - if (!mem_info.ready) - return; - i = 0; - while (mem != (void *)r) { - r += mem_info.blocks[i].size; - i++; - if (i == mem_info.count) - return; - } - mem_info.blocks[i].free = 1; - if (i + 1 < mem_info.count && mem_info.blocks[i + 1].free) { - mem_info.blocks[i].size += mem_info.blocks[i + 1].size; - delete_block(i + 1); - } - if (i - 1 >= 0 && mem_info.blocks[i - 1].free) { - mem_info.blocks[i - 1].size += mem_info.blocks[i].size; - delete_block(i); - } -} - -#define DIRECTION_FLAG (1 << 10) - -static void em_ins(int size) -{ - unsigned int edx, edi; - - edx = context.vm.regs.edx & 0xffff; - edi = context.vm.regs.edi & 0xffff; - edi += (unsigned int)context.vm.regs.ds << 4; - if (context.vm.regs.eflags & DIRECTION_FLAG) { - if (size == 4) - asm volatile ("std; insl; cld" - : "=D" (edi) : "d" (edx), "0" (edi)); - else if (size == 2) - asm volatile ("std; insw; cld" - : "=D" (edi) : "d" (edx), "0" (edi)); - else - asm volatile ("std; insb; cld" - : "=D" (edi) : "d" (edx), "0" (edi)); - } - else { - if (size == 4) - asm volatile ("cld; insl" - : "=D" (edi) : "d" (edx), "0" (edi)); - else if (size == 2) - asm volatile ("cld; insw" - : "=D" (edi) : "d" (edx), "0" (edi)); - else - asm volatile ("cld; insb" - : "=D" (edi) : "d" (edx), "0" (edi)); - } - edi -= (unsigned int)context.vm.regs.ds << 4; - context.vm.regs.edi &= 0xffff0000; - context.vm.regs.edi |= edi & 0xffff; -} - -static void em_rep_ins(int size) -{ - unsigned int ecx, edx, edi; - - ecx = context.vm.regs.ecx & 0xffff; - edx = context.vm.regs.edx & 0xffff; - edi = context.vm.regs.edi & 0xffff; - edi += (unsigned int)context.vm.regs.ds << 4; - if (context.vm.regs.eflags & DIRECTION_FLAG) { - if (size == 4) - asm volatile ("std; rep; insl; cld" - : "=D" (edi), "=c" (ecx) - : "d" (edx), "0" (edi), "1" (ecx)); - else if (size == 2) - asm volatile ("std; rep; insw; cld" - : "=D" (edi), "=c" (ecx) - : "d" (edx), "0" (edi), "1" (ecx)); - else - asm volatile ("std; rep; insb; cld" - : "=D" (edi), "=c" (ecx) - : "d" (edx), "0" (edi), "1" (ecx)); - } - else { - if (size == 4) - asm volatile ("cld; rep; insl" - : "=D" (edi), "=c" (ecx) - : "d" (edx), "0" (edi), "1" (ecx)); - else if (size == 2) - asm volatile ("cld; rep; insw" - : "=D" (edi), "=c" (ecx) - : "d" (edx), "0" (edi), "1" (ecx)); - else - asm volatile ("cld; rep; insb" - : "=D" (edi), "=c" (ecx) - : "d" (edx), "0" (edi), "1" (ecx)); - } - - edi -= (unsigned int)context.vm.regs.ds << 4; - context.vm.regs.edi &= 0xffff0000; - context.vm.regs.edi |= edi & 0xffff; - context.vm.regs.ecx &= 0xffff0000; - context.vm.regs.ecx |= ecx & 0xffff; -} - -static void em_outs(int size) -{ - unsigned int edx, esi; - - edx = context.vm.regs.edx & 0xffff; - esi = context.vm.regs.esi & 0xffff; - esi += (unsigned int)context.vm.regs.ds << 4; - if (context.vm.regs.eflags & DIRECTION_FLAG) { - if (size == 4) - asm volatile ("std; outsl; cld" - : "=S" (esi) : "d" (edx), "0" (esi)); - else if (size == 2) - asm volatile ("std; outsw; cld" - : "=S" (esi) : "d" (edx), "0" (esi)); - else - asm volatile ("std; outsb; cld" - : "=S" (esi) : "d" (edx), "0" (esi)); - } - else { - if (size == 4) - asm volatile ("cld; outsl" - : "=S" (esi) : "d" (edx), "0" (esi)); - else if (size == 2) - asm volatile ("cld; outsw" - : "=S" (esi) : "d" (edx), "0" (esi)); - else - asm volatile ("cld; outsb" - : "=S" (esi) : "d" (edx), "0" (esi)); - } - - esi -= (unsigned int)context.vm.regs.ds << 4; - context.vm.regs.esi &= 0xffff0000; - context.vm.regs.esi |= esi & 0xffff; -} - -static void em_rep_outs(int size) -{ - unsigned int ecx, edx, esi; - - ecx = context.vm.regs.ecx & 0xffff; - edx = context.vm.regs.edx & 0xffff; - esi = context.vm.regs.esi & 0xffff; - esi += (unsigned int)context.vm.regs.ds << 4; - if (context.vm.regs.eflags & DIRECTION_FLAG) { - if (size == 4) - asm volatile ("std; rep; outsl; cld" - : "=S" (esi), "=c" (ecx) - : "d" (edx), "0" (esi), "1" (ecx)); - else if (size == 2) - asm volatile ("std; rep; outsw; cld" - : "=S" (esi), "=c" (ecx) - : "d" (edx), "0" (esi), "1" (ecx)); - else - asm volatile ("std; rep; outsb; cld" - : "=S" (esi), "=c" (ecx) - : "d" (edx), "0" (esi), "1" (ecx)); - } - else { - if (size == 4) - asm volatile ("cld; rep; outsl" - : "=S" (esi), "=c" (ecx) - : "d" (edx), "0" (esi), "1" (ecx)); - else if (size == 2) - asm volatile ("cld; rep; outsw" - : "=S" (esi), "=c" (ecx) - : "d" (edx), "0" (esi), "1" (ecx)); - else - asm volatile ("cld; rep; outsb" - : "=S" (esi), "=c" (ecx) - : "d" (edx), "0" (esi), "1" (ecx)); - } - - esi -= (unsigned int)context.vm.regs.ds << 4; - context.vm.regs.esi &= 0xffff0000; - context.vm.regs.esi |= esi & 0xffff; - context.vm.regs.ecx &= 0xffff0000; - context.vm.regs.ecx |= ecx & 0xffff; -} - -static int emulate(void) -{ - unsigned char *insn; - struct { - unsigned int size : 1; - unsigned int rep : 1; - } prefix = { 0, 0 }; - int i = 0; - - insn = (unsigned char *)((unsigned int)context.vm.regs.cs << 4); - insn += context.vm.regs.eip; - - while (1) { -#ifdef TRACE_IO - traceAddr = ((ulong)context.vm.regs.cs << 16) + context.vm.regs.eip + i; -#endif - if (insn[i] == 0x66) { - prefix.size = 1 - prefix.size; - i++; - } - else if (insn[i] == 0xf3) { - prefix.rep = 1; - i++; - } - else if (insn[i] == 0xf0 || insn[i] == 0xf2 - || insn[i] == 0x26 || insn[i] == 0x2e - || insn[i] == 0x36 || insn[i] == 0x3e - || insn[i] == 0x64 || insn[i] == 0x65 - || insn[i] == 0x67) { - /* these prefixes are just ignored */ - i++; - } - else if (insn[i] == 0x6c) { - if (prefix.rep) - em_rep_ins(1); - else - em_ins(1); - i++; - break; - } - else if (insn[i] == 0x6d) { - if (prefix.rep) { - if (prefix.size) - em_rep_ins(4); - else - em_rep_ins(2); - } - else { - if (prefix.size) - em_ins(4); - else - em_ins(2); - } - i++; - break; - } - else if (insn[i] == 0x6e) { - if (prefix.rep) - em_rep_outs(1); - else - em_outs(1); - i++; - break; - } - else if (insn[i] == 0x6f) { - if (prefix.rep) { - if (prefix.size) - em_rep_outs(4); - else - em_rep_outs(2); - } - else { - if (prefix.size) - em_outs(4); - else - em_outs(2); - } - i++; - break; - } - else if (insn[i] == 0xec) { - *((uchar*)&context.vm.regs.eax) = port_in(context.vm.regs.edx); - i++; - break; - } - else if (insn[i] == 0xed) { - if (prefix.size) - *((ulong*)&context.vm.regs.eax) = port_inl(context.vm.regs.edx); - else - *((ushort*)&context.vm.regs.eax) = port_inw(context.vm.regs.edx); - i++; - break; - } - else if (insn[i] == 0xee) { - port_out(context.vm.regs.eax,context.vm.regs.edx); - i++; - break; - } - else if (insn[i] == 0xef) { - if (prefix.size) - port_outl(context.vm.regs.eax,context.vm.regs.edx); - else - port_outw(context.vm.regs.eax,context.vm.regs.edx); - i++; - break; - } - else - return 0; - } - - context.vm.regs.eip += i; - return 1; -} - -static void debug_info(int vret) -{ - int i; - unsigned char *p; - - fputs("vm86() failed\n", stderr); - fprintf(stderr, "return = 0x%x\n", vret); - fprintf(stderr, "eax = 0x%08lx\n", context.vm.regs.eax); - fprintf(stderr, "ebx = 0x%08lx\n", context.vm.regs.ebx); - fprintf(stderr, "ecx = 0x%08lx\n", context.vm.regs.ecx); - fprintf(stderr, "edx = 0x%08lx\n", context.vm.regs.edx); - fprintf(stderr, "esi = 0x%08lx\n", context.vm.regs.esi); - fprintf(stderr, "edi = 0x%08lx\n", context.vm.regs.edi); - fprintf(stderr, "ebp = 0x%08lx\n", context.vm.regs.ebp); - fprintf(stderr, "eip = 0x%08lx\n", context.vm.regs.eip); - fprintf(stderr, "cs = 0x%04x\n", context.vm.regs.cs); - fprintf(stderr, "esp = 0x%08lx\n", context.vm.regs.esp); - fprintf(stderr, "ss = 0x%04x\n", context.vm.regs.ss); - fprintf(stderr, "ds = 0x%04x\n", context.vm.regs.ds); - fprintf(stderr, "es = 0x%04x\n", context.vm.regs.es); - fprintf(stderr, "fs = 0x%04x\n", context.vm.regs.fs); - fprintf(stderr, "gs = 0x%04x\n", context.vm.regs.gs); - fprintf(stderr, "eflags = 0x%08lx\n", context.vm.regs.eflags); - fputs("cs:ip = [ ", stderr); - p = (unsigned char *)((context.vm.regs.cs << 4) + (context.vm.regs.eip & 0xffff)); - for (i = 0; i < 16; ++i) - fprintf(stderr, "%02x ", (unsigned int)p[i]); - fputs("]\n", stderr); - fflush(stderr); -} - -static int run_vm86(void) -{ - unsigned int vret; - - for (;;) { - vret = vm86(&context.vm); - if (VM86_TYPE(vret) == VM86_INTx) { - unsigned int v = VM86_ARG(vret); - if (v == RETURN_TO_32_INT) - return 1; - pushw(context.vm.regs.eflags); - pushw(context.vm.regs.cs); - pushw(context.vm.regs.eip); - context.vm.regs.cs = get_int_seg(v); - context.vm.regs.eip = get_int_off(v); - context.vm.regs.eflags &= ~(VIF_MASK | TF_MASK); - continue; - } - if (VM86_TYPE(vret) != VM86_UNKNOWN) - break; - if (!emulate()) - break; - } - debug_info(vret); - return 0; -} - -#define IND(ereg) context.vm.regs.ereg = regs->ereg -#define OUTD(ereg) regs->ereg = context.vm.regs.ereg - -void PMAPI DPMI_int86(int intno, DPMI_regs *regs) -{ - if (!inited) - PM_init(); - memset(&context.vm.regs, 0, sizeof(context.vm.regs)); - IND(eax); IND(ebx); IND(ecx); IND(edx); IND(esi); IND(edi); - context.vm.regs.eflags = DEFAULT_VM86_FLAGS; - context.vm.regs.cs = get_int_seg(intno); - context.vm.regs.eip = get_int_off(intno); - context.vm.regs.ss = context.stack_seg; - context.vm.regs.esp = context.stack_off; - pushw(DEFAULT_VM86_FLAGS); - pushw(context.ret_seg); - pushw(context.ret_off); - run_vm86(); - OUTD(eax); OUTD(ebx); OUTD(ecx); OUTD(edx); OUTD(esi); OUTD(edi); - regs->flags = context.vm.regs.eflags; -} - -#define IN(ereg) context.vm.regs.ereg = in->e.ereg -#define OUT(ereg) out->e.ereg = context.vm.regs.ereg - -int PMAPI PM_int86(int intno, RMREGS *in, RMREGS *out) -{ - if (!inited) - PM_init(); - memset(&context.vm.regs, 0, sizeof(context.vm.regs)); - IN(eax); IN(ebx); IN(ecx); IN(edx); IN(esi); IN(edi); - context.vm.regs.eflags = DEFAULT_VM86_FLAGS; - context.vm.regs.cs = get_int_seg(intno); - context.vm.regs.eip = get_int_off(intno); - context.vm.regs.ss = context.stack_seg; - context.vm.regs.esp = context.stack_off; - pushw(DEFAULT_VM86_FLAGS); - pushw(context.ret_seg); - pushw(context.ret_off); - run_vm86(); - OUT(eax); OUT(ebx); OUT(ecx); OUT(edx); OUT(esi); OUT(edi); - out->x.cflag = context.vm.regs.eflags & 1; - return out->x.ax; -} - -int PMAPI PM_int86x(int intno, RMREGS *in, RMREGS *out, - RMSREGS *sregs) -{ - if (!inited) - PM_init(); - if (intno == 0x21) { - time_t today = time(NULL); - struct tm *t; - t = localtime(&today); - out->x.cx = t->tm_year + 1900; - out->h.dh = t->tm_mon + 1; - out->h.dl = t->tm_mday; - } - else { - unsigned int seg, off; - seg = get_int_seg(intno); - off = get_int_off(intno); - memset(&context.vm.regs, 0, sizeof(context.vm.regs)); - IN(eax); IN(ebx); IN(ecx); IN(edx); IN(esi); IN(edi); - context.vm.regs.eflags = DEFAULT_VM86_FLAGS; - context.vm.regs.cs = seg; - context.vm.regs.eip = off; - context.vm.regs.es = sregs->es; - context.vm.regs.ds = sregs->ds; - context.vm.regs.fs = sregs->fs; - context.vm.regs.gs = sregs->gs; - context.vm.regs.ss = context.stack_seg; - context.vm.regs.esp = context.stack_off; - pushw(DEFAULT_VM86_FLAGS); - pushw(context.ret_seg); - pushw(context.ret_off); - run_vm86(); - OUT(eax); OUT(ebx); OUT(ecx); OUT(edx); OUT(esi); OUT(edi); - sregs->es = context.vm.regs.es; - sregs->ds = context.vm.regs.ds; - sregs->fs = context.vm.regs.fs; - sregs->gs = context.vm.regs.gs; - out->x.cflag = context.vm.regs.eflags & 1; - } - return out->e.eax; -} - -#define OUTR(ereg) in->e.ereg = context.vm.regs.ereg - -void PMAPI PM_callRealMode(uint seg,uint off, RMREGS *in, - RMSREGS *sregs) -{ - if (!inited) - PM_init(); - memset(&context.vm.regs, 0, sizeof(context.vm.regs)); - IN(eax); IN(ebx); IN(ecx); IN(edx); IN(esi); IN(edi); - context.vm.regs.eflags = DEFAULT_VM86_FLAGS; - context.vm.regs.cs = seg; - context.vm.regs.eip = off; - context.vm.regs.ss = context.stack_seg; - context.vm.regs.esp = context.stack_off; - context.vm.regs.es = sregs->es; - context.vm.regs.ds = sregs->ds; - context.vm.regs.fs = sregs->fs; - context.vm.regs.gs = sregs->gs; - pushw(DEFAULT_VM86_FLAGS); - pushw(context.ret_seg); - pushw(context.ret_off); - run_vm86(); - OUTR(eax); OUTR(ebx); OUTR(ecx); OUTR(edx); OUTR(esi); OUTR(edi); - sregs->es = context.vm.regs.es; - sregs->ds = context.vm.regs.ds; - sregs->fs = context.vm.regs.fs; - sregs->gs = context.vm.regs.gs; - in->x.cflag = context.vm.regs.eflags & 1; -} - -void PMAPI PM_availableMemory(ulong *physical,ulong *total) -{ - FILE *mem = fopen("/proc/meminfo","r"); - char buf[1024]; - - fgets(buf,1024,mem); - fgets(buf,1024,mem); - sscanf(buf,"Mem: %*d %*d %ld", physical); - fgets(buf,1024,mem); - sscanf(buf,"Swap: %*d %*d %ld", total); - fclose(mem); - *total += *physical; -} - -void * PMAPI PM_allocLockedMem(uint size,ulong *physAddr,ibool contiguous,ibool below16M) -{ - /* TODO: Implement this for Linux */ - return NULL; -} - -void PMAPI PM_freeLockedMem(void *p,uint size,ibool contiguous) -{ - /* TODO: Implement this for Linux */ -} - -void * PMAPI PM_allocPage( - ibool locked) -{ - /* TODO: Implement this for Linux */ - return NULL; -} - -void PMAPI PM_freePage( - void *p) -{ - /* TODO: Implement this for Linux */ -} - -void PMAPI PM_setBankA(int bank) -{ - if (!inited) - PM_init(); - memset(&context.vm.regs, 0, sizeof(context.vm.regs)); - context.vm.regs.eax = 0x4F05; - context.vm.regs.ebx = 0x0000; - context.vm.regs.edx = bank; - context.vm.regs.eflags = DEFAULT_VM86_FLAGS; - context.vm.regs.cs = get_int_seg(0x10); - context.vm.regs.eip = get_int_off(0x10); - context.vm.regs.ss = context.stack_seg; - context.vm.regs.esp = context.stack_off; - pushw(DEFAULT_VM86_FLAGS); - pushw(context.ret_seg); - pushw(context.ret_off); - run_vm86(); -} - -void PMAPI PM_setBankAB(int bank) -{ - if (!inited) - PM_init(); - memset(&context.vm.regs, 0, sizeof(context.vm.regs)); - context.vm.regs.eax = 0x4F05; - context.vm.regs.ebx = 0x0000; - context.vm.regs.edx = bank; - context.vm.regs.eflags = DEFAULT_VM86_FLAGS; - context.vm.regs.cs = get_int_seg(0x10); - context.vm.regs.eip = get_int_off(0x10); - context.vm.regs.ss = context.stack_seg; - context.vm.regs.esp = context.stack_off; - pushw(DEFAULT_VM86_FLAGS); - pushw(context.ret_seg); - pushw(context.ret_off); - run_vm86(); - context.vm.regs.eax = 0x4F05; - context.vm.regs.ebx = 0x0001; - context.vm.regs.edx = bank; - context.vm.regs.eflags = DEFAULT_VM86_FLAGS; - context.vm.regs.cs = get_int_seg(0x10); - context.vm.regs.eip = get_int_off(0x10); - context.vm.regs.ss = context.stack_seg; - context.vm.regs.esp = context.stack_off; - pushw(DEFAULT_VM86_FLAGS); - pushw(context.ret_seg); - pushw(context.ret_off); - run_vm86(); -} - -void PMAPI PM_setCRTStart(int x,int y,int waitVRT) -{ - if (!inited) - PM_init(); - memset(&context.vm.regs, 0, sizeof(context.vm.regs)); - context.vm.regs.eax = 0x4F07; - context.vm.regs.ebx = waitVRT; - context.vm.regs.ecx = x; - context.vm.regs.edx = y; - context.vm.regs.eflags = DEFAULT_VM86_FLAGS; - context.vm.regs.cs = get_int_seg(0x10); - context.vm.regs.eip = get_int_off(0x10); - context.vm.regs.ss = context.stack_seg; - context.vm.regs.esp = context.stack_off; - pushw(DEFAULT_VM86_FLAGS); - pushw(context.ret_seg); - pushw(context.ret_off); - run_vm86(); -} - -int PMAPI PM_enableWriteCombine(ulong base,ulong length,uint type) -{ -#ifdef ENABLE_MTRR - struct mtrr_sentry sentry; - - if (mtrr_fd < 0) - return PM_MTRR_ERR_NO_OS_SUPPORT; - sentry.base = base; - sentry.size = length; - sentry.type = type; - if (ioctl(mtrr_fd, MTRRIOC_ADD_ENTRY, &sentry) == -1) { - /* TODO: Need to decode MTRR error codes!! */ - return PM_MTRR_NOT_SUPPORTED; - } - return PM_MTRR_ERR_OK; -#else - return PM_MTRR_ERR_NO_OS_SUPPORT; -#endif -} - -/**************************************************************************** -PARAMETERS: -callback - Function to callback with write combine information - -REMARKS: -Function to enumerate all write combine regions currently enabled for the -processor. -****************************************************************************/ -int PMAPI PM_enumWriteCombine( - PM_enumWriteCombine_t callback) -{ -#ifdef ENABLE_MTRR - struct mtrr_gentry gentry; - - if (mtrr_fd < 0) - return PM_MTRR_ERR_NO_OS_SUPPORT; - - for (gentry.regnum = 0; ioctl (mtrr_fd, MTRRIOC_GET_ENTRY, &gentry) == 0; - ++gentry.regnum) { - if (gentry.size > 0) { - /* WARNING: This code assumes that the types in pmapi.h match the ones */ - /* in the Linux kernel (mtrr.h) */ - callback(gentry.base, gentry.size, gentry.type); - } - } - - return PM_MTRR_ERR_OK; -#else - return PM_MTRR_ERR_NO_OS_SUPPORT; -#endif -} - -ibool PMAPI PM_doBIOSPOST( - ushort axVal, - ulong BIOSPhysAddr, - void *copyOfBIOS, - ulong BIOSLen) -{ - char *bios_ptr = (char*)0xC0000; - char *old_bios; - ulong Current10, Current6D, *rvec = 0; - RMREGS regs; - RMSREGS sregs; - - /* The BIOS is mapped to 0xC0000 with a private memory mapping enabled - * which means we have a copy on write scheme. Hence we simply copy - * the secondary BIOS image over the top of the old one. - */ - if (!inited) - PM_init(); - if ((old_bios = PM_malloc(BIOSLen)) == NULL) - return false; - if (BIOSPhysAddr != 0xC0000) { - memcpy(old_bios,bios_ptr,BIOSLen); - memcpy(bios_ptr,copyOfBIOS,BIOSLen); - } - - /* The interrupt vectors should already be mmap()'ed from 0-0x400 in PM_init */ - Current10 = rvec[0x10]; - Current6D = rvec[0x6D]; - - /* POST the secondary BIOS */ - rvec[0x10] = rvec[0x42]; /* Restore int 10h to STD-BIOS */ - regs.x.ax = axVal; - PM_callRealMode(0xC000,0x0003,®s,&sregs); - - /* Restore interrupt vectors */ - rvec[0x10] = Current10; - rvec[0x6D] = Current6D; - - /* Restore original BIOS image */ - if (BIOSPhysAddr != 0xC0000) - memcpy(bios_ptr,old_bios,BIOSLen); - PM_free(old_bios); - return true; -} - -int PMAPI PM_lockDataPages(void *p,uint len,PM_lockHandle *lh) -{ - p = p; len = len; - return 1; -} - -int PMAPI PM_unlockDataPages(void *p,uint len,PM_lockHandle *lh) -{ - p = p; len = len; - return 1; -} - -int PMAPI PM_lockCodePages(void (*p)(),uint len,PM_lockHandle *lh) -{ - p = p; len = len; - return 1; -} - -int PMAPI PM_unlockCodePages(void (*p)(),uint len,PM_lockHandle *lh) -{ - p = p; len = len; - return 1; -} - -PM_MODULE PMAPI PM_loadLibrary( - const char *szDLLName) -{ - /* TODO: Implement this to load shared libraries! */ - (void)szDLLName; - return NULL; -} - -void * PMAPI PM_getProcAddress( - PM_MODULE hModule, - const char *szProcName) -{ - /* TODO: Implement this! */ - (void)hModule; - (void)szProcName; - return NULL; -} - -void PMAPI PM_freeLibrary( - PM_MODULE hModule) -{ - /* TODO: Implement this! */ - (void)hModule; -} - -int PMAPI PM_setIOPL( - int level) -{ - /* TODO: Move the IOPL switching into this function!! */ - return level; -} - -void PMAPI PM_flushTLB(void) -{ - /* Do nothing on Linux. */ -} |
