minix/lib/libc/arch/arm/sys-minix/__sigreturn.S

/* This routine is the low-level code for returning from signals.   */
/* It calls _sigreturn, which is the normal "system call" routine. */
/* Both __sigreturn and _sigreturn are needed. */
#include <machine/asm.h>

IMPORT(_sigreturn)
ENTRY(__sigreturn)
	add	sp, sp, #24	/* make sp point to sigframe.sf_scpcopy */
	pop	{r0}		/* load it into r0 as parameter */
	b	_C_LABEL(_sigreturn)	/* _sigreturn(struct sigcontext *sf_scpcopy) */
ARM support for system libraries 2012-08-28 19:34:08 +02:00			`/* This routine is the low-level code for returning from signals. */`
			`/* It calls _sigreturn, which is the normal "system call" routine. */`
			`/* Both __sigreturn and _sigreturn are needed. */`
			`#include <machine/asm.h>`

			`IMPORT(_sigreturn)`
			`ENTRY(__sigreturn)`
arm: make signal handlers work A few kernel and calling convention adjustments to make sigsend and sigreturn work for arm. . provide a arch_proc_setcontext for earm in kernel . set LR in context of signal handler to provide a proper return address (to __sigreturn) . change __sigreturn to retrieve the sigcontext pointer from the sigframe struct and pass it to _sigreturn() in r0 Change-Id: Icd135a70595382c79d11d8dd9876f6a6f1df41f8 2013-01-30 03:13:24 +01:00			`add sp, sp, #24 /* make sp point to sigframe.sf_scpcopy */`
			`pop {r0} /* load it into r0 as parameter */`
			`b _C_LABEL(_sigreturn) /* _sigreturn(struct sigcontext sf_scpcopy) /`