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https://github.com/autc04/Retro68.git
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78 lines
1.6 KiB
ArmAsm
78 lines
1.6 KiB
ArmAsm
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! This file is called sigsetjmp.s because that is what V8 uses.
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! We do not define sigsetjmp() or setlongjmp() yet.
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! Solaris has setjmp/longjmp in setjmp.o. Move this stuff there.
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#include <sys/syscallasm.h>
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TEXT_SECTION
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ALIGN (4)
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#ifdef __svr4__
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GLOBAL (ASM_SYMBOL (setjmp))
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.proc 04
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ASM_SYMBOL (setjmp):
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clr [%o0]
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stx %sp,[%o0+8]
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add %o7,8,%g1
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stx %g1,[%o0+16]
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retl
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mov %g0,%o0
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GLOBAL (ASM_SYMBOL (longjmp))
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.proc 04
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ASM_SYMBOL (longjmp):
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flushw ! flush register windows
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sub %sp,136,%sp
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ldx [%o0+8],%fp
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ldx [%o0+16],%g1
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tst %o1
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bne L0
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sub %g1,8,%o7
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mov 1,%o1
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L0:
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retl
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restore %o1,0,%o0
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#else
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GLOBAL (ASM_SYMBOL (setjmp))
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.proc 04
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ASM_SYMBOL (setjmp):
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save %sp,-136,%sp
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or %g0,%g0,%o0 ! %o0 = 0
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or %g0,0x6d,%g1 ! %g1 = 0x6d (syscall number)
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ta SYSCALL_TRAP
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stw %o0,[%i0+4] ! save result at [%i0+4] (sigmask?)
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add %fp,-8,%o1 ! %o1 -> tmp 8 byte buffer
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or %g0,%g0,%o0 ! %o0 = 0
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or %g0,0x70,%g1 ! %g1 = 0x70 (syscall number)
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ta SYSCALL_TRAP
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lduw [%fp-4],%g1 ! %g1 = onsstack?
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stw %fp,[%i0+8] ! save %fp at [%i0+8]
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stw %g1,[%i0+0] ! save ? at [%i0+8]
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add %i7,8,%g1 ! %g1 = return address
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stw %g1,[%i0+12] ! save return address at [%i0+12]
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add %g1,4,%g1 ! %g1 = nPC
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stw %g1,[%i0+16] ! save nPC at [%i0+16]
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stw %g0,[%i0+20]
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stw %g0,[%i0+24]
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stw %g0,[%i0+32]
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jmpl %i7+8,%g0
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restore %g0,0,%o0
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GLOBAL (ASM_SYMBOL (longjmp))
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.proc 04
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ASM_SYMBOL (longjmp):
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orcc %g0,%o1,%g0 ! return val == 0 ?
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be,a L1 ! branch if 0
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or %g0,1,%o1 ! make it 1 (executed if branch taken)
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L1:
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or %g0,0x8b,%g1 ! set syscall 0x8b
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stw %o1,[%o0+28] ! save return val for restoration
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ta SYSCALL_TRAP
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#endif /* ! __svr4__ */
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