diff options
Diffstat (limited to 'arch/sparc/kernel/entry.S')
| -rw-r--r-- | arch/sparc/kernel/entry.S | 206 |
1 files changed, 11 insertions, 195 deletions
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S index c2eed8f71516..135644f8add7 100644 --- a/arch/sparc/kernel/entry.S +++ b/arch/sparc/kernel/entry.S @@ -1186,36 +1186,6 @@ srmmu_fault: RESTORE_ALL -#ifdef CONFIG_SUNOS_EMUL - /* SunOS uses syscall zero as the 'indirect syscall' it looks - * like indir_syscall(scall_num, arg0, arg1, arg2...); etc. - * This is complete brain damage. - */ - .globl sunos_indir -sunos_indir: - mov %o7, %l4 - cmp %o0, NR_SYSCALLS - blu,a 1f - sll %o0, 0x2, %o0 - - sethi %hi(sunos_nosys), %l6 - b 2f - or %l6, %lo(sunos_nosys), %l6 - -1: - set sunos_sys_table, %l7 - ld [%l7 + %o0], %l6 - -2: - mov %o1, %o0 - mov %o2, %o1 - mov %o3, %o2 - mov %o4, %o3 - mov %o5, %o4 - call %l6 - mov %l4, %o7 -#endif - .align 4 .globl sys_nis_syscall sys_nis_syscall: @@ -1232,6 +1202,16 @@ sys_execve: call sparc_execve mov %l5, %o7 + .globl sunos_execv +sunos_execv: + st %g0, [%sp + STACKFRAME_SZ + PT_I2] + + call sparc_execve + add %sp, STACKFRAME_SZ, %o0 + + b ret_sys_call + ld [%sp + STACKFRAME_SZ + PT_I0], %o0 + .align 4 .globl sys_pipe sys_pipe: @@ -1394,7 +1374,7 @@ ret_from_fork: b ret_sys_call ld [%sp + STACKFRAME_SZ + PT_I0], %o0 - /* Linux native and SunOS system calls enter here... */ + /* Linux native system calls enter here... */ .align 4 .globl linux_sparc_syscall linux_sparc_syscall: @@ -1472,170 +1452,6 @@ linux_syscall_trace2: st %l2, [%sp + STACKFRAME_SZ + PT_NPC] - /* - * Solaris system calls and indirect system calls enter here. - * - * I have named the solaris indirect syscalls like that because - * it seems like Solaris has some fast path syscalls that can - * be handled as indirect system calls. - mig - */ - -linux_syscall_for_solaris: - sethi %hi(sys_call_table), %l7 - b linux_sparc_syscall - or %l7, %lo(sys_call_table), %l7 - - .align 4 - .globl solaris_syscall -solaris_syscall: - cmp %g1,59 - be linux_syscall_for_solaris - cmp %g1,2 - be linux_syscall_for_solaris - cmp %g1,42 - be linux_syscall_for_solaris - cmp %g1,119 - be,a linux_syscall_for_solaris - mov 2, %g1 -1: - SAVE_ALL_HEAD - rd %wim, %l3 - - wr %l0, PSR_ET, %psr - nop - nop - mov %i0, %l5 - - call do_solaris_syscall - add %sp, STACKFRAME_SZ, %o0 - - st %o0, [%sp + STACKFRAME_SZ + PT_I0] - set PSR_C, %g2 - cmp %o0, -ERESTART_RESTARTBLOCK - bgeu 1f - ld [%sp + STACKFRAME_SZ + PT_PSR], %g3 - - /* System call success, clear Carry condition code. */ - andn %g3, %g2, %g3 - clr %l6 - b 2f - st %g3, [%sp + STACKFRAME_SZ + PT_PSR] - -1: - /* System call failure, set Carry condition code. - * Also, get abs(errno) to return to the process. - */ - sub %g0, %o0, %o0 - mov 1, %l6 - st %o0, [%sp + STACKFRAME_SZ + PT_I0] - or %g3, %g2, %g3 - st %g3, [%sp + STACKFRAME_SZ + PT_PSR] - - /* Advance the pc and npc over the trap instruction. - * If the npc is unaligned (has a 1 in the lower byte), it means - * the kernel does not want us to play magic (ie, skipping over - * traps). Mainly when the Solaris code wants to set some PC and - * nPC (setcontext). - */ -2: - ld [%sp + STACKFRAME_SZ + PT_NPC], %l1 /* pc = npc */ - andcc %l1, 1, %g0 - bne 1f - add %l1, 0x4, %l2 /* npc = npc+4 */ - st %l1, [%sp + STACKFRAME_SZ + PT_PC] - b ret_trap_entry - st %l2, [%sp + STACKFRAME_SZ + PT_NPC] - - /* kernel knows what it is doing, fixup npc and continue */ -1: - sub %l1, 1, %l1 - b ret_trap_entry - st %l1, [%sp + STACKFRAME_SZ + PT_NPC] - -#ifndef CONFIG_SUNOS_EMUL - .align 4 - .globl sunos_syscall -sunos_syscall: - SAVE_ALL_HEAD - rd %wim, %l3 - wr %l0, PSR_ET, %psr - nop - nop - mov %i0, %l5 - call do_sunos_syscall - add %sp, STACKFRAME_SZ, %o0 -#endif - - /* {net, open}bsd system calls enter here... */ - .align 4 - .globl bsd_syscall -bsd_syscall: - /* Direct access to user regs, must faster. */ - cmp %g1, NR_SYSCALLS - blu,a 1f - sll %g1, 2, %l4 - - set sys_ni_syscall, %l7 - b bsd_is_too_hard - nop - -1: - ld [%l7 + %l4], %l7 - - .globl bsd_is_too_hard -bsd_is_too_hard: - rd %wim, %l3 - SAVE_ALL - - wr %l0, PSR_ET, %psr - WRITE_PAUSE - -2: - mov %i0, %o0 - mov %i1, %o1 - mov %i2, %o2 - mov %i0, %l5 - mov %i3, %o3 - mov %i4, %o4 - call %l7 - mov %i5, %o5 - - st %o0, [%sp + STACKFRAME_SZ + PT_I0] - set PSR_C, %g2 - cmp %o0, -ERESTART_RESTARTBLOCK - bgeu 1f - ld [%sp + STACKFRAME_SZ + PT_PSR], %g3 - - /* System call success, clear Carry condition code. */ - andn %g3, %g2, %g3 - clr %l6 - b 2f - st %g3, [%sp + STACKFRAME_SZ + PT_PSR] - -1: - /* System call failure, set Carry condition code. - * Also, get abs(errno) to return to the process. - */ - sub %g0, %o0, %o0 -#if 0 /* XXX todo XXX */ - sethi %hi(bsd_xlatb_rorl), %o3 - or %o3, %lo(bsd_xlatb_rorl), %o3 - sll %o0, 2, %o0 - ld [%o3 + %o0], %o0 -#endif - mov 1, %l6 - st %o0, [%sp + STACKFRAME_SZ + PT_I0] - or %g3, %g2, %g3 - st %g3, [%sp + STACKFRAME_SZ + PT_PSR] - - /* Advance the pc and npc over the trap instruction. */ -2: - ld [%sp + STACKFRAME_SZ + PT_NPC], %l1 /* pc = npc */ - add %l1, 0x4, %l2 /* npc = npc+4 */ - st %l1, [%sp + STACKFRAME_SZ + PT_PC] - b ret_trap_entry - st %l2, [%sp + STACKFRAME_SZ + PT_NPC] - /* Saving and restoring the FPU state is best done from lowlevel code. * * void fpsave(unsigned long *fpregs, unsigned long *fsr, |
