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2003-03-27  David Mosberger  <davidm@hpl.hp.com>

	* sysdeps/ia64/dl-machine.h (RTLD_START): Wrap ".save rp, r0"
	directive into empty .prologue region to ensure that call-chain
	is terminated even for the first instruction.

	* sysdeps/ia64/elf/start.S (_start): Use ".save rp, r0" idiom
	to terminate call-chain right from the get-go.

	* sysdeps/unix/sysv/linux/ia64/fork.S (fork): Remove unnecessary
	stop bit between compare & branch.
This commit is contained in:
Ulrich Drepper 2003-03-29 19:20:17 +00:00
parent d8592d04fa
commit 266227abcb
4 changed files with 22 additions and 6 deletions
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13
ChangeLog
View File

@ -1,3 +1,15 @@
2003-03-27 David Mosberger <davidm@hpl.hp.com>
* sysdeps/ia64/dl-machine.h (RTLD_START): Wrap ".save rp, r0"
directive into empty .prologue region to ensure that call-chain
is terminated even for the first instruction.
* sysdeps/ia64/elf/start.S (_start): Use ".save rp, r0" idiom
to terminate call-chain right from the get-go.
* sysdeps/unix/sysv/linux/ia64/fork.S (fork): Remove unnecessary
stop bit between compare & branch.
2003-03-29 Ulrich Drepper <drepper@redhat.com>
* stdlib/strtod.c (INTERNAL): Recognize first digit after decimal
@ -9,7 +21,6 @@
2003-03-29 Alexandre Oliva <aoliva@redhat.com>
* configure.in: Add mips64* support.
* configure: Rebuilt.
* sysdeps/mips/bits/endian.h: Make it bi-endian.
* sysdeps/mips/mipsel/bits/endian.h: Removed.
* sysdeps/mips/mips64/n32/el/bits/endian.h: Removed.

8
sysdeps/ia64/dl-machine.h
View File

@ -301,8 +301,10 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
"_start:\n" \
"0: { .mii\n" \
" .prologue\n" \
" .save ar.pfs, r32\n" \
" .save rp, r0\n" \
" .body\n" \
" .prologue\n" \
" .save ar.pfs, r32\n" \
" alloc loc0 = ar.pfs, 0, 3, 4, 0\n" \
" .body\n" \
" mov r2 = ip\n" \
@ -332,8 +334,10 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
" .proc _dl_start_user#\n" \
"_dl_start_user:\n" \
" .prologue\n" \
" .save ar.pfs, r32\n" \
" .save rp, r0\n" \
" .body\n" \
" .prologue\n" \
" .save ar.pfs, r32\n" \
" .body\n" \
" { .mii\n" \
" /* Save the pointer to the user entry point fptr in loc2. */\n" \

6
sysdeps/ia64/elf/start.S
View File

@ -39,6 +39,9 @@
.proc _start
.type _start,@function
_start:
.prologue
.save rp, r0
.body
.prologue
{ .mlx
alloc r2 = ar.pfs,0,0,7,0
@ -76,8 +79,7 @@ _start:
{ .mmi
ld8 out3 = [out3] /* pointer to `init' function descriptor */
ld8 out4 = [out4] /* pointer to `fini' function descriptor */
.save rp, r4
mov r4 = r0 /* terminate unwind chain with a NULL return-pointer */
nop 0
}
.body
{ .mib

1
sysdeps/unix/sysv/linux/ia64/fork.S
View File

@ -32,7 +32,6 @@ ENTRY(__libc_fork)
;;
DO_CALL (SYS_ify (clone))
cmp.eq p6,p0=-1,r10
;;
(p6) br.cond.spnt.few __syscall_error
ret
PSEUDO_END(__libc_fork)