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2003-03-10 Steven Munroe <sjmunroe@us.ibm.com>

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* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S: Don't clobber R7.
	Copy extra params for NPTL to registers used in clone syscall.
This commit is contained in:
Roland McGrath 2003-03-10 21:04:29 +00:00
parent c915e5ad56
commit 4fba8a3b3d
1 changed files with 8 additions and 3 deletions
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11
sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S
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@ -28,7 +28,8 @@
all the freaky stuff we have to do to make the call useful. */ all the freaky stuff we have to do to make the call useful. */
/* int [r3] clone(int (*fn)(void *arg) [r3], void *child_stack [r4], /* int [r3] clone(int (*fn)(void *arg) [r3], void *child_stack [r4],
int flags [r5], void *arg [r6]); */ int flags [r5], void *arg [r6], void *parent_tid [r7],
void *tls [r8], void *child_tid [r9]); */
ENTRY (BP_SYM (__clone)) ENTRY (BP_SYM (__clone))
/* GKM FIXME: add bounds checks, where sensible. */ /* GKM FIXME: add bounds checks, where sensible. */
@ -37,8 +38,8 @@ ENTRY (BP_SYM (__clone))
/* Check for child_stack == NULL || fn == NULL. */ /* Check for child_stack == NULL || fn == NULL. */
cmpdi cr0,r4,0 cmpdi cr0,r4,0
ld r7,0(r3) ld r0,0(r3)
cmpdi cr1,r7,0 cmpdi cr1,r0,0
cror cr0*4+eq,cr1*4+eq,cr0*4+eq cror cr0*4+eq,cr1*4+eq,cr0*4+eq
beq- cr0,L(badargs) beq- cr0,L(badargs)
@ -61,6 +62,10 @@ ENTRY (BP_SYM (__clone))
/* 'flags' argument is first parameter to clone syscall. (The other /* 'flags' argument is first parameter to clone syscall. (The other
argument is the stack pointer, already in r4.) */ argument is the stack pointer, already in r4.) */
mr r3,r5 mr r3,r5
/* Move the parent_tid, child_tid and tls arguments. */
mr r5,r7
mr r6,r8
mr r7,r9
/* Do the call. */ /* Do the call. */
DO_CALL(SYS_ify(clone)) DO_CALL(SYS_ify(clone))