NetBSD/lib/libc/arch/powerpc/sys/sigprocmask.S

/*	$NetBSD: sigprocmask.S,v 1.7 1999/01/14 22:48:21 kleink Exp $	*/

#include "SYS.h"

WARN_REFERENCES(sigprocmask, \
    "warning: reference to compatibility sigprocmask(); include <signal.h> for correct reference")

/*
 * sigprocmask(int how, sigset_t *set, sigset_t *oset)
 */
ENTRY(sigprocmask)
	or.	4,4,4		# set == NULL?
	li	6,1		# how = SIG_BLOCK
	beq	1f
	lwz	4,0(4)		# if not, replace it in r4 with *set
	mr	6,3
1:
	mr	3,6		# ... using sigprocmask(SIG_BLOCK)
	li	0,SYS_compat_13_sigprocmask13
	sc
	bso	3f
	or.	5,5,5		# check to see of oset requested
	beq	2f		# if oset != NULL,
	stw	3,0(5)		#    *oset = oldmask
2:
	li	3,0
	blr			# in any case, return 0
3:
	b	PIC_PLT(_C_LABEL(__cerror))
* On architectures using ELF, and conditionally on those in transition, rename _ASM_LABEL(cerror) and _ASM_LABEL(curbrk) to _C_LABEL(__cerror) and _C_LABEL(__curbrk) (or their respective architecture-specific equivalents) to avoid possible name clashes with identifiers used in user applications. * Do the same for minbrk on all architectures to avoid a GCC-specific (and on ELF architectures effectively useless) symbol reference renaming in MI code. 1999-01-15 01:48:18 +03:00			`/* $NetBSD: sigprocmask.S,v 1.7 1999/01/14 22:48:21 kleink Exp $ */`
Architecture-specific bits for libc on the PowerPC. From Wolfgang Solfrank <ws@tools.de> 1997-03-29 23:55:50 +03:00
			`#include "SYS.h"`

Warn about references to the compatibility() sigaction(), sigpending(), sigprocmask(), sigreturn(), and sigsuspend(), and direct the user to include <signal.h> to generate the correct reference. 1998-12-02 04:01:03 +03:00			`WARN_REFERENCES(sigprocmask, \`
			`"warning: reference to compatibility sigprocmask(); include <signal.h> for correct reference")`

Architecture-specific bits for libc on the PowerPC. From Wolfgang Solfrank <ws@tools.de> 1997-03-29 23:55:50 +03:00			`/*`
			`* sigprocmask(int how, sigset_t set, sigset_t oset)`
			`*/`
			`ENTRY(sigprocmask)`
			`or. 4,4,4 # set == NULL?`
			`li 6,1 # how = SIG_BLOCK`
			`beq 1f`
			`lwz 4,0(4) # if not, replace it in r4 with *set`
			`mr 6,3`
			`1:`
			`mr 3,6 # ... using sigprocmask(SIG_BLOCK)`
New signal stuff for PowerPC. 1998-10-03 16:30:37 +04:00			`li 0,SYS_compat_13_sigprocmask13`
Architecture-specific bits for libc on the PowerPC. From Wolfgang Solfrank <ws@tools.de> 1997-03-29 23:55:50 +03:00			`sc`
			`bso 3f`
			`or. 5,5,5 # check to see of oset requested`
			`beq 2f # if oset != NULL,`
			`stw 3,0(5) # *oset = oldmask`
			`2:`
			`li 3,0`
			`blr # in any case, return 0`
			`3:`
* On architectures using ELF, and conditionally on those in transition, rename _ASM_LABEL(cerror) and _ASM_LABEL(curbrk) to _C_LABEL(__cerror) and _C_LABEL(__curbrk) (or their respective architecture-specific equivalents) to avoid possible name clashes with identifiers used in user applications. * Do the same for minbrk on all architectures to avoid a GCC-specific (and on ELF architectures effectively useless) symbol reference renaming in MI code. 1999-01-15 01:48:18 +03:00			`b PIC_PLT(_C_LABEL(__cerror))`