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GNU C Library master sources branch release/2.25/master updated. glibc-2.25-38-g725118c
- From: danglin at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 12 Aug 2017 20:12:33 -0000
- Subject: GNU C Library master sources branch release/2.25/master updated. glibc-2.25-38-g725118c
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=725118c013c9828b08f7dfbc64a522a8eaf87d30
commit 725118c013c9828b08f7dfbc64a522a8eaf87d30
Author: John David Anglin <danglin@gcc.gnu.org>
Date: Sat Aug 12 16:11:36 2017 -0400
Fix syscall cancellation on hppa.
* sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h (PSEUDO): Fix CFA offset.
Use .cfi_def_cfa_offset instead of .cfi_offset. Don't record stack
pointer offset. Correct PIC register offset. Don't mention frame
related instructions in epilogue.
(PUSHARGS_1): Correct offset.
(PUSHARGS_2): Likewise.
(PUSHARGS_3): Likewise.
(PUSHARGS_4): Likewise.
(PUSHARGS_5): Likewise.
(PUSHARGS_6): Likewise.
(POPARGS_1): Don't mention register restore.
(POPARGS_2): Likewise.
(POPARGS_3): Likewise.
(POPARGS_4): Likewise.
(POPARGS_5): Likewise.
(POPARGS_6): Likewise.
* sysdeps/unix/sysv/linux/hppa/sysdep.h (SAVE_PIC): Don't mention
copy of PIC register.
(LOAD_PIC): Likewise don't mention restore.
(DO_CALL): Fix CFA offset. Use .cfi_def_cfa_offset instead of
.cfi_offset. Don't record stack pointer offset. Correct PIC register
offset. Don't mention frame related instructions in epilogue.
diff --git a/ChangeLog b/ChangeLog
index 9919f22..3419e73 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,28 @@
2017-08-12 John David Anglin <danglin@gcc.gnu.org>
+ * sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h (PSEUDO): Fix CFA offset.
+ Use .cfi_def_cfa_offset instead of .cfi_offset. Don't record stack
+ pointer offset. Correct PIC register offset. Don't mention frame
+ related instructions in epilogue.
+ (PUSHARGS_1): Correct offset.
+ (PUSHARGS_2): Likewise.
+ (PUSHARGS_3): Likewise.
+ (PUSHARGS_4): Likewise.
+ (PUSHARGS_5): Likewise.
+ (PUSHARGS_6): Likewise.
+ (POPARGS_1): Don't mention register restore.
+ (POPARGS_2): Likewise.
+ (POPARGS_3): Likewise.
+ (POPARGS_4): Likewise.
+ (POPARGS_5): Likewise.
+ (POPARGS_6): Likewise.
+ * sysdeps/unix/sysv/linux/hppa/sysdep.h (SAVE_PIC): Don't mention
+ copy of PIC register.
+ (LOAD_PIC): Likewise don't mention restore.
+ (DO_CALL): Fix CFA offset. Use .cfi_def_cfa_offset instead of
+ .cfi_offset. Don't record stack pointer offset. Correct PIC register
+ offset. Don't mention frame related instructions in epilogue.
+
[BZ 20098]
* sysdeps/hppa/dl-fptr.c (_dl_read_access_allowed): New.
(_dl_lookup_address): Return address if it is not consistent with
diff --git a/sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h b/sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h
index 5ea2972..8b7f2b2 100644
--- a/sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h
@@ -62,12 +62,11 @@
ENTRY (__##syscall_name##_nocancel) \
DOARGS_##args ASM_LINE_SEP \
stwm TREG, 64(%sp) ASM_LINE_SEP \
+ .cfi_def_cfa_offset -64 ASM_LINE_SEP \
.cfi_offset TREG, 0 ASM_LINE_SEP \
- .cfi_adjust_cfa_offset 64 ASM_LINE_SEP \
stw %sp, -4(%sp) ASM_LINE_SEP \
- .cfi_offset 30, -4 ASM_LINE_SEP \
stw %r19, -32(%sp) ASM_LINE_SEP \
- .cfi_offset 19, -32 ASM_LINE_SEP \
+ .cfi_offset 19, 32 ASM_LINE_SEP \
/* Save r19 */ ASM_LINE_SEP \
SAVE_PIC(TREG) ASM_LINE_SEP \
/* Do syscall, delay loads # */ ASM_LINE_SEP \
@@ -91,21 +90,19 @@ L(pre_nc_end): ASM_LINE_SEP \
/* No need to LOAD_PIC */ ASM_LINE_SEP \
/* Undo frame */ ASM_LINE_SEP \
ldwm -64(%sp),TREG ASM_LINE_SEP \
- .cfi_adjust_cfa_offset -64 ASM_LINE_SEP \
/* Restore rp before exit */ ASM_LINE_SEP \
ldw -20(%sp), %rp ASM_LINE_SEP \
- .cfi_restore 2 ASM_LINE_SEP \
ret ASM_LINE_SEP \
END(__##syscall_name##_nocancel) ASM_LINE_SEP \
/**********************************************/ASM_LINE_SEP \
ENTRY (name) \
DOARGS_##args ASM_LINE_SEP \
stwm TREG, 64(%sp) ASM_LINE_SEP \
- .cfi_adjust_cfa_offset 64 ASM_LINE_SEP \
+ .cfi_def_cfa_offset -64 ASM_LINE_SEP \
+ .cfi_offset TREG, 0 ASM_LINE_SEP \
stw %sp, -4(%sp) ASM_LINE_SEP \
- .cfi_offset 30, -4 ASM_LINE_SEP \
stw %r19, -32(%sp) ASM_LINE_SEP \
- .cfi_offset 19, -32 ASM_LINE_SEP \
+ .cfi_offset 19, 32 ASM_LINE_SEP \
/* Done setting up frame, continue... */ ASM_LINE_SEP \
SINGLE_THREAD_P ASM_LINE_SEP \
cmpib,<>,n 0,%ret0,L(pseudo_cancel) ASM_LINE_SEP \
@@ -168,40 +165,32 @@ L(pre_end): ASM_LINE_SEP \
/* No need to LOAD_PIC */ ASM_LINE_SEP \
/* Undo frame */ ASM_LINE_SEP \
ldwm -64(%sp),TREG ASM_LINE_SEP \
- .cfi_adjust_cfa_offset -64 ASM_LINE_SEP \
/* Restore rp before exit */ ASM_LINE_SEP \
- ldw -20(%sp), %rp ASM_LINE_SEP \
- .cfi_restore 2 ASM_LINE_SEP
+ ldw -20(%sp), %rp ASM_LINE_SEP
/* Save arguments into our frame */
# define PUSHARGS_0 /* nothing to do */
# define PUSHARGS_1 PUSHARGS_0 stw %r26, -36(%sr0,%sp) ASM_LINE_SEP \
- .cfi_offset 26, -36 ASM_LINE_SEP
+ .cfi_offset 26, 28 ASM_LINE_SEP
# define PUSHARGS_2 PUSHARGS_1 stw %r25, -40(%sr0,%sp) ASM_LINE_SEP \
- .cfi_offset 25, -40 ASM_LINE_SEP
+ .cfi_offset 25, 24 ASM_LINE_SEP
# define PUSHARGS_3 PUSHARGS_2 stw %r24, -44(%sr0,%sp) ASM_LINE_SEP \
- .cfi_offset 24, -44 ASM_LINE_SEP
+ .cfi_offset 24, 20 ASM_LINE_SEP
# define PUSHARGS_4 PUSHARGS_3 stw %r23, -48(%sr0,%sp) ASM_LINE_SEP \
- .cfi_offset 23, -48 ASM_LINE_SEP
+ .cfi_offset 23, 16 ASM_LINE_SEP
# define PUSHARGS_5 PUSHARGS_4 stw %r22, -52(%sr0,%sp) ASM_LINE_SEP \
- .cfi_offset 22, -52 ASM_LINE_SEP
+ .cfi_offset 22, 12 ASM_LINE_SEP
# define PUSHARGS_6 PUSHARGS_5 stw %r21, -56(%sr0,%sp) ASM_LINE_SEP \
- .cfi_offset 21, -56 ASM_LINE_SEP
+ .cfi_offset 21, 8 ASM_LINE_SEP
/* Bring them back from the stack */
# define POPARGS_0 /* nothing to do */
-# define POPARGS_1 POPARGS_0 ldw -36(%sr0,%sp), %r26 ASM_LINE_SEP \
- .cfi_restore 26 ASM_LINE_SEP
-# define POPARGS_2 POPARGS_1 ldw -40(%sr0,%sp), %r25 ASM_LINE_SEP \
- .cfi_restore 25 ASM_LINE_SEP
-# define POPARGS_3 POPARGS_2 ldw -44(%sr0,%sp), %r24 ASM_LINE_SEP \
- .cfi_restore 24 ASM_LINE_SEP
-# define POPARGS_4 POPARGS_3 ldw -48(%sr0,%sp), %r23 ASM_LINE_SEP \
- .cfi_restore 23 ASM_LINE_SEP
-# define POPARGS_5 POPARGS_4 ldw -52(%sr0,%sp), %r22 ASM_LINE_SEP \
- .cfi_restore 22 ASM_LINE_SEP
-# define POPARGS_6 POPARGS_5 ldw -56(%sr0,%sp), %r21 ASM_LINE_SEP \
- .cfi_restore 21 ASM_LINE_SEP
+# define POPARGS_1 POPARGS_0 ldw -36(%sr0,%sp), %r26 ASM_LINE_SEP
+# define POPARGS_2 POPARGS_1 ldw -40(%sr0,%sp), %r25 ASM_LINE_SEP
+# define POPARGS_3 POPARGS_2 ldw -44(%sr0,%sp), %r24 ASM_LINE_SEP
+# define POPARGS_4 POPARGS_3 ldw -48(%sr0,%sp), %r23 ASM_LINE_SEP
+# define POPARGS_5 POPARGS_4 ldw -52(%sr0,%sp), %r22 ASM_LINE_SEP
+# define POPARGS_6 POPARGS_5 ldw -56(%sr0,%sp), %r21 ASM_LINE_SEP
# if IS_IN (libpthread)
# ifdef PIC
diff --git a/sysdeps/unix/sysv/linux/hppa/sysdep.h b/sysdeps/unix/sysv/linux/hppa/sysdep.h
index d8dd043..c0cd59e 100644
--- a/sysdeps/unix/sysv/linux/hppa/sysdep.h
+++ b/sysdeps/unix/sysv/linux/hppa/sysdep.h
@@ -49,11 +49,9 @@
to another function */
#define TREG 4
#define SAVE_PIC(SREG) \
- copy %r19, SREG ASM_LINE_SEP \
- .cfi_register 19, SREG
+ copy %r19, SREG
#define LOAD_PIC(LREG) \
- copy LREG , %r19 ASM_LINE_SEP \
- .cfi_restore 19
+ copy LREG , %r19
/* Inline assembly defines */
#define TREG_ASM "%r4" /* Cant clobber r3, it holds framemarker */
#define SAVE_ASM_PIC " copy %%r19, %" TREG_ASM "\n"
@@ -292,12 +290,11 @@
#define DO_CALL(syscall_name, args) \
/* Create a frame */ ASM_LINE_SEP \
stwm TREG, 64(%sp) ASM_LINE_SEP \
+ .cfi_def_cfa_offset -64 ASM_LINE_SEP \
.cfi_offset TREG, 0 ASM_LINE_SEP \
- .cfi_adjust_cfa_offset 64 ASM_LINE_SEP \
stw %sp, -4(%sp) ASM_LINE_SEP \
- .cfi_offset 30, -4 ASM_LINE_SEP \
stw %r19, -32(%sp) ASM_LINE_SEP \
- .cfi_offset 19, -32 ASM_LINE_SEP \
+ .cfi_offset 19, 32 ASM_LINE_SEP \
/* Save r19 */ ASM_LINE_SEP \
SAVE_PIC(TREG) ASM_LINE_SEP \
/* Do syscall, delay loads # */ ASM_LINE_SEP \
@@ -320,10 +317,8 @@
L(pre_end): ASM_LINE_SEP \
/* Restore our frame, restoring TREG */ ASM_LINE_SEP \
ldwm -64(%sp), TREG ASM_LINE_SEP \
- .cfi_adjust_cfa_offset -64 ASM_LINE_SEP \
/* Restore return pointer */ ASM_LINE_SEP \
- ldw -20(%sp),%rp ASM_LINE_SEP \
- .cfi_restore 2 ASM_LINE_SEP
+ ldw -20(%sp),%rp ASM_LINE_SEP
/* We do nothing with the return, except hand it back to someone else */
#undef DO_CALL_NOERRNO
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 23 ++++++++++++
sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h | 47 ++++++++++----------------
sysdeps/unix/sysv/linux/hppa/sysdep.h | 15 +++-----
3 files changed, 46 insertions(+), 39 deletions(-)
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