alpha_cfi.patch

crosstool是由Dan Kegel开发的一套脚本程序

Retrieved with
$ wget 'http://sources.redhat.com/cgi-bin/cvsweb.cgi/libc/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S.diff?r1=1.5&r2=1.6&cvsroot=glibc'
$ wget 'http://sources.redhat.com/cgi-bin/cvsweb.cgi/libc/linuxthreads/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h.diff?r1=1.3&r2=1.4&cvsroot=glibc'

Might fix problem building with binutils-2.14.90.0.8/gcc-3.3.3 that was not
present with binutils-2.13.90.0.18/gcc-3.3.2:

../linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S: Assembler messages:
../linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S:63: Warning: .ent
directive without matching .end
../linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S:63: Error: can't resolve
`0' {.text section} - `L0^A' {.text section}
make[2]: ***
[/home/dkegel/wk/crosstool-0.26-pre3/build/alpha-unknown-linux-gnu/gcc-3.3-20040112-glibc-2.3.2/build-glibc/posix/vfork.o]
Error 1
make[2]: Leaving directory
`/home/dkegel/wk/crosstool-0.26-pre3/build/alpha-unknown-linux-gnu/gcc-3.3-20040112-glibc-2.3.2/glibc-2.3.2/posix'
make[1]: *** [posix/subdir_lib] Error 2
make[1]: Leaving directory
`/home/dkegel/wk/crosstool-0.26-pre3/build/alpha-unknown-linux-gnu/gcc-3.3-20040112-glibc-2.3.2/glibc-2.3.2'
make: *** [all] Error 2

===================================================================
RCS file: /cvs/glibc/libc/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -r1.5 -r1.6
--- libc/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S	2003/02/11 06:27:53	1.5
+++ libc/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S	2003/06/06 05:51:03	1.6
@@ -19,12 +19,13 @@
 
 #include <sysdep-cancel.h>
 
-	.globl __vfork
         .align 4
-        .ent __vfork,0
-__LABEL(__vfork)
+	.globl	__vfork
+	.type	__vfork, @function
+	.usepv	__vfork, std
+	cfi_startproc
+__vfork:
 	ldgp	gp, 0(pv)
-	.prologue 1
 	PSEUDO_PROF
 
 #ifdef SHARED
@@ -46,18 +47,24 @@
 	   fork and vfork object files.  */
 $do_fork:
 	subq	sp, 16, sp
+	cfi_adjust_cfa_offset(16)
 	stq	ra, 0(sp)
+	cfi_offset(ra, -16)
 	jsr	ra, HIDDEN_JUMPTARGET (__fork)
 	ldgp	gp, 0(ra)
 	ldq	ra, 0(sp)
 	addq	sp, 16, sp
+	cfi_restore(ra)
+	cfi_adjust_cfa_offset(-16)
 	ret
 
 $syscall_error:
 	SYSCALL_ERROR_HANDLER
 #endif
 
-PSEUDO_END(__vfork)
+	cfi_endproc
+	.size __vfork, .-__vfork
+
 libc_hidden_def (__vfork)
 
 weak_alias (__vfork, vfork)
===================================================================
RCS file: /cvs/glibc/libc/linuxthreads/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -r1.3 -r1.4
--- libc/linuxthreads/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h	2003/01/12 19:26:41	1.3
+++ libc/linuxthreads/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h	2003/06/06 05:51:03	1.4
@@ -40,10 +40,11 @@
 # define PSEUDO(name, syscall_name, args)			\
 	.globl name;						\
 	.align 4;						\
-	.ent name, 0;						\
+	.type name, @function;					\
+	.usepv name, std;					\
+	cfi_startproc;						\
 __LABEL(name)							\
 	ldgp	gp, 0(pv);					\
-	.prologue 1;						\
 	PSEUDO_PROF;						\
 	PSEUDO_PREPARE_ARGS					\
 	SINGLE_THREAD_P(t0);					\
@@ -55,7 +56,9 @@
 	.subsection 2;						\
 __LABEL($pseudo_cancel)						\
 	subq	sp, 64, sp;					\
+	cfi_def_cfa_offset(64);					\
 	stq	ra, 0(sp);					\
+	cfi_offset(ra, -64);					\
 	SAVE_ARGS_##args;					\
 	CENABLE;						\
 	LOAD_ARGS_##args;					\
@@ -67,19 +70,27 @@
 	ldq	ra, 0(sp);					\
 	ldq	v0, 8(sp);					\
 	addq	sp, 64, sp;					\
+	cfi_remember_state;					\
+	cfi_restore(ra);					\
+	cfi_def_cfa_offset(0);					\
 	ret;							\
+	cfi_restore_state;					\
 __LABEL($multi_error)						\
 	CDISABLE;						\
 	ldq	ra, 0(sp);					\
 	ldq	v0, 8(sp);					\
 	addq	sp, 64, sp;					\
+	cfi_restore(ra);					\
+	cfi_def_cfa_offset(0);					\
 __LABEL($syscall_error)						\
 	SYSCALL_ERROR_HANDLER;					\
-	END(name);						\
 	.previous
 
 # undef PSEUDO_END
-# define PSEUDO_END(sym)
+# define PSEUDO_END(sym)					\
+	.subsection 2;						\
+	cfi_endproc;						\
+	.size sym, .-sym
 
 # define SAVE_ARGS_0	/* Nothing.  */
 # define SAVE_ARGS_1	SAVE_ARGS_0; stq a0, 8(sp)