AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-22 13:00:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

Use HIDDEN_JUMPTARGET rather than spelling out its effects, for ____longjmp_chk implementations.

Browse Source
This commit is contained in:
Roland McGrath 2011-09-15 12:26:08 -07:00
parent 4d8e1f1195
commit b402e91af4
4 changed files with 15 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
ChangeLog
View File

@ -1,3 +1,13 @@
2011-09-15 Roland McGrath <roland@hack.frob.com>
* sysdeps/unix/sysv/linux/i386/____longjmp_chk.S
(CALL_FAIL): Use HIDDEN_JUMPTARGET for __fortify_fail.
* sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S
(CALL_FAIL): Likewise.
* sysdeps/unix/sysv/linux/ia64/____longjmp_chk.S (CHECK_RSP): Likewise.
(CALL_FAIL): Macro removed.
Patch mostly by Mike Frysinger <vapier@gentoo.org>.
2011-09-15 Ulrich Drepper <drepper@gmail.com>
* sysdeps/x86_64/fpu/bits/mathinline.h: Add fmax and fmin optimizations

4
sysdeps/unix/sysv/linux/i386/____longjmp_chk.S
View File

@ -33,10 +33,10 @@ longjmp_msg:
cfi_register(%ebx,%ecx); \
LOAD_PIC_REG (bx); \
leal longjmp_msg@GOTOFF(%ebx), %eax; \
call __GI___fortify_fail@PLT
call HIDDEN_JUMPTARGET(__fortify_fail)
#else
# define CALL_FAIL movl $longjmp_msg, %eax; \
call __fortify_fail
call HIDDEN_JUMPTARGET(__fortify_fail)
#endif

8
sysdeps/unix/sysv/linux/ia64/____longjmp_chk.S
View File

@ -30,19 +30,13 @@ longjmp_msg:
#define __longjmp ____longjmp_chk
#ifdef PIC
# define CALL_FAIL __GI___fortify_fail
#else
# define CALL_FAIL __fortify_fail
#endif
#define CHECK_RSP(reg) \
cmp.ltu p0, p8 = reg, r12; \
(p8) br.cond.dpnt .Lok;; \
addl r28 = @ltoffx(longjmp_msg#), r1;; \
ld8.mov r28 = [r28], longjmp_msg#;; \
ld8 out0 = [r28]; \
br.call.sptk.many b0 = CALL_FAIL#;; \
br.call.sptk.many b0 = HIDDEN_JUMPTARGET(__fortify_fail)#;; \
.Lok:
#include "__longjmp.S"

4
sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S
View File

@ -34,7 +34,7 @@ longjmp_msg:
cfi_remember_state; \
cfi_def_cfa_offset(16); \
leaq longjmp_msg(%rip), %rdi; \
call __GI___fortify_fail; \
call HIDDEN_JUMPTARGET(__fortify_fail); \
nop; \
cfi_restore_state
#else
@ -42,7 +42,7 @@ longjmp_msg:
cfi_remember_state; \
cfi_def_cfa_offset(16); \
movq $longjmp_msg, %rdi; \
call __fortify_fail; \
call HIDDEN_JUMPTARGET(__fortify_fail); \
nop; \
cfi_restore_state
#endif