This is the mail archive of the libc-hacker@sourceware.org mailing list for the glibc project.
Note that libc-hacker is a closed list. You may look at the archives of this list, but subscription and posting are not open.
| Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
|---|---|---|
| Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |
| Other format: | [Raw text] | |
Hi!
The sysdep.h changes are needed to actually build sparc64 glibc.
configure changes are because the CFI directive test fails for sparc64,
because of the stack bias (.cfi_rel_offset 1, 0) is not biased and
therefore not aligned.
sysdep-cancel.h is the first part of changes to make cancellation
actually work properly on sparc64, fixes some tests, but will
need to build debugging libgcc_s now to study up the remaining
failures.
2006-01-06 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Include tls.h.
(SYSCALL_ERROR_HANDLER_ENTRY): Use %g4 instead of %g2, to avoid
the need of .register directive for it.
* configure.in (libc_cv_asm_cfi_directives): Use CFI rel offset
2047 instead of 0 in the test on sparc64.
* configure: Rebuilt.
nptl/
* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h (PSEUDO):
Add cfi directives.
--- libc/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h.jj 2006-01-02 15:48:07.000000000 -0500
+++ libc/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h 2006-01-04 12:40:51.000000000 -0500
@@ -1,4 +1,5 @@
-/* Copyright (C) 1997, 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 2000, 2002, 2003, 2004, 2006
+ Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <richard@gnu.ai.mit.edu>, 1997.
@@ -25,6 +26,7 @@
#ifdef IS_IN_rtld
# include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
#endif
+#include <tls.h>
#undef SYS_ify
#define SYS_ify(syscall_name) __NR_##syscall_name
@@ -124,10 +126,10 @@ SYSCALL_ERROR_HANDLER_ENTRY(__syscall_er
# define SYSCALL_ERROR_HANDLER \
SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler) \
sethi %tie_hi22(SYSCALL_ERROR_ERRNO), %g1; \
- sethi %hi(_GLOBAL_OFFSET_TABLE_), %g2; \
+ sethi %hi(_GLOBAL_OFFSET_TABLE_), %g4; \
add %g1, %tie_lo10(SYSCALL_ERROR_ERRNO), %g1; \
- add %g2, %lo(_GLOBAL_OFFSET_TABLE_), %g2; \
- ldx [%g2 + %g1], %g1, %tie_ldx(SYSCALL_ERROR_ERRNO); \
+ add %g4, %lo(_GLOBAL_OFFSET_TABLE_), %g4; \
+ ldx [%g4 + %g1], %g1, %tie_ldx(SYSCALL_ERROR_ERRNO); \
st %o0, [%g7 + %g1], %tie_add(SYSCALL_ERROR_ERRNO); \
jmpl %o7+8, %g0; \
mov -1, %o0; \
--- libc/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h.jj 2004-07-06 00:25:43.000000000 -0400
+++ libc/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h 2006-01-06 05:55:54.000000000 -0500
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
@@ -40,7 +40,11 @@ __##syscall_name##_nocancel:
nop; \
.size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \
.subsection 2; \
+ cfi_startproc; \
1: save %sp, -192, %sp; \
+ cfi_def_cfa_register (%fp); \
+ cfi_window_save; \
+ cfi_register (%o7, %i7); \
CENABLE; \
nop; \
mov %o0, %l0; \
@@ -53,6 +57,7 @@ __##syscall_name##_nocancel:
mov %l0, %o0; \
jmpl %i7 + 8, %g0; \
restore %g0, %l1, %o0; \
+ cfi_endproc; \
.previous; \
SYSCALL_ERROR_HANDLER \
SYSCALL_ERROR_HANDLER2
--- libc/configure.in.jj 2006-01-04 01:24:42.000000000 -0500
+++ libc/configure.in 2006-01-06 06:01:47.000000000 -0500
@@ -1676,13 +1676,17 @@ elif test $libc_cv_asm_weakext_directive
fi
AC_CACHE_CHECK(whether CFI directives are supported, libc_cv_asm_cfi_directives, [dnl
+case $machine in
+ sparc/sparc64*) cfi_offset=2047;;
+ *) cfi_offset=0;;
+esac
cat > conftest.s <<EOF
.text
.type func,%function
func:
.cfi_startproc
.cfi_remember_state
- .cfi_rel_offset 1, 0
+ .cfi_rel_offset 1, $cfi_offset
.cfi_endproc
EOF
if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
--- libc/configure.jj 2006-01-04 10:33:34.000000000 -0500
+++ libc/configure 2006-01-06 06:02:03.000000000 -0500
@@ -6135,13 +6135,17 @@ echo $ECHO_N "checking whether CFI direc
if test "${libc_cv_asm_cfi_directives+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
- cat > conftest.s <<EOF
+ case $machine in
+ sparc/sparc64*) cfi_offset=2047;;
+ *) cfi_offset=0;;
+esac
+cat > conftest.s <<EOF
.text
.type func,%function
func:
.cfi_startproc
.cfi_remember_state
- .cfi_rel_offset 1, 0
+ .cfi_rel_offset 1, $cfi_offset
.cfi_endproc
EOF
if { ac_try='${CC-cc} $ASFLAGS -c conftest.s 1>&5'
Jakub
| Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
|---|---|---|
| Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |