2000-09-06 18:26:29 +00:00
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/* $FreeBSD$ */
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2000-12-03 01:30:31 +00:00
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#include <machine/asm.h>
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#include <alpha/linux/linux_syscall.h>
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2000-09-06 18:26:29 +00:00
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/*
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* Signal "trampoline" code. Invoked from RTE setup by sendsig().
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*
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* On entry, stack & registers look like:
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*
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* a0 signal number
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* a1 pointer to siginfo_t
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* a2 pointer to signal context frame (scp)
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* a3 address of handler
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* sp+0 saved hardware state
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* .
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* .
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* scp+0 beginning of signal context frame
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*/
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/*
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* System call glue.
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*/
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#define LINUX_SYSCALLNUM(name) \
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___CONCAT(LINUX_SYS_,name)
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#define LINUX_CALLSYS_NOERROR(name) \
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ldiq v0, LINUX_SYSCALLNUM(name); \
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call_pal PAL_OSF1_callsys
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NESTED(linux_sigcode,0,0,ra,0,0)
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lda sp, -16(sp) /* save the sigcontext pointer */
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stq a2, 0(sp)
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jsr ra, (t12) /* call the signal handler (t12==pv) */
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ldq a0, 0(sp) /* get the sigcontext pointer */
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lda sp, 16(sp)
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/* and call sigreturn() with it. */
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LINUX_CALLSYS_NOERROR(osf1_sigreturn)
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mov v0, a0 /* if that failed, get error code */
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LINUX_CALLSYS_NOERROR(exit) /* and call exit() with it. */
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XNESTED(linux_esigcode,0)
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END(linux_sigcode)
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.data
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EXPORT(linux_szsigcode)
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.quad linux_esigcode-linux_sigcode
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.text
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