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:
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:
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:
st %o0, [%sp + STACKFRAME_SZ + PT_I0]
- .globl ret_sys_call
ret_sys_call:
ld [%curptr + TI_FLAGS], %l6
cmp %o0, -ERESTART_RESTARTBLOCK
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,
projects / linux-2.6 / blobdiff