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87 lines
1.9 KiB
87 lines
1.9 KiB
20 years ago
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/* sclow.S: Low level special syscall handling.
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* Basically these are cases where we can completely
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* handle the system call without saving any state
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* because we know that the process will not sleep.
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*
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* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
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*/
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#include <asm/ptrace.h>
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#include <asm/asm_offsets.h>
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#include <asm/errno.h>
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#include <asm/winmacro.h>
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#include <asm/thread_info.h>
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#include <asm/psr.h>
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#include <asm/page.h>
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#define CC_AND_RETT \
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set PSR_C, %l4; \
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andn %l0, %l4, %l4; \
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wr %l4, 0x0, %psr; \
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nop; nop; nop; \
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jmp %l2; \
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rett %l2 + 4;
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#define SC_AND_RETT \
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set PSR_C, %l4; \
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or %l0, %l4, %l4; \
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wr %l4, 0x0, %psr; \
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nop; nop; nop; \
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jmp %l2; \
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rett %l2 + 4;
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#define LABEL(func) func##_low
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.globl LABEL(sunosnop)
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LABEL(sunosnop):
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CC_AND_RETT
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#if (ASIZ_task_uid == 2 && ASIZ_task_euid == 2)
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.globl LABEL(sunosgetuid)
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LABEL(sunosgetuid):
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LOAD_CURRENT(l4, l5)
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ld [%l4 + TI_TASK], %l4
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lduh [%l4 + AOFF_task_uid], %i0
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lduh [%l4 + AOFF_task_euid], %i1
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CC_AND_RETT
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#endif
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#if (ASIZ_task_gid == 2 && ASIZ_task_egid == 2)
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.globl LABEL(sunosgetgid)
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LABEL(sunosgetgid):
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LOAD_CURRENT(l4, l5)
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ld [%l4 + TI_TASK], %l4
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lduh [%l4 + AOFF_task_gid], %i0
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lduh [%l4 + AOFF_task_egid], %i1
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CC_AND_RETT
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#endif
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.globl LABEL(sunosmctl)
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LABEL(sunosmctl):
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mov 0, %i0
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CC_AND_RETT
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.globl LABEL(sunosgdtsize)
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LABEL(sunosgdtsize):
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mov 256, %i0
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CC_AND_RETT
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.globl LABEL(getpagesize)
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LABEL(getpagesize):
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set PAGE_SIZE, %i0
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CC_AND_RETT
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/* XXX sys_nice() XXX */
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/* XXX sys_setpriority() XXX */
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/* XXX sys_getpriority() XXX */
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/* XXX sys_setregid() XXX */
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/* XXX sys_setgid() XXX */
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/* XXX sys_setreuid() XXX */
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/* XXX sys_setuid() XXX */
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/* XXX sys_setfsuid() XXX */
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/* XXX sys_setfsgid() XXX */
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/* XXX sys_setpgid() XXX */
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/* XXX sys_getpgid() XXX */
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/* XXX sys_setsid() XXX */
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/* XXX sys_getsid() XXX */
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