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