about summary refs log tree commit diff
diff options
context:
space:
mode:
authorRichard Henderson <rth@twiddle.net>2012-08-07 09:48:05 -0700
committerRichard Henderson <rth@twiddle.net>2012-08-08 07:44:19 -0700
commit6ee732b7cd8c29e4c1c903ae69d6f57c73afc0a3 (patch)
tree934a65859e39bc2a9371c292a98414e7b3d2d95d
parent6360984bc3ee9534437f5f62d65ad31b47c33b35 (diff)
downloadglibc-6ee732b7cd8c29e4c1c903ae69d6f57c73afc0a3.tar.gz
glibc-6ee732b7cd8c29e4c1c903ae69d6f57c73afc0a3.tar.xz
glibc-6ee732b7cd8c29e4c1c903ae69d6f57c73afc0a3.zip
alpha: Tidy up ieee_get/set_fp_control syscalls
-rw-r--r--ports/ChangeLog.alpha5
-rw-r--r--ports/sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S38
-rw-r--r--ports/sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S38
3 files changed, 31 insertions, 50 deletions
diff --git a/ports/ChangeLog.alpha b/ports/ChangeLog.alpha
index 282900aaf9..719fc6a9bf 100644
--- a/ports/ChangeLog.alpha
+++ b/ports/ChangeLog.alpha
@@ -1,5 +1,10 @@
 2012-08-08  Richard Henderson  <rth@redhat.com>
 
+	* sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S: Use dwarf2
+	cfi markup for unwind.  Adjust stack early so that the normal
+	syscall error path can be used.
+	* sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S: Likewise.
+
 	* sysdeps/unix/sysv/linux/alpha/kernel-features.h
 	(__ASSUME_STAT64_SYSCALL): Remove.
 	* sysdeps/unix/sysv/linux/alpha/fxstat.c: Remove test
diff --git a/ports/sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S b/ports/sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S
index ec24297b0b..74ad499f6d 100644
--- a/ports/sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S
+++ b/ports/sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993, 1995, 1996, 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 1993-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by David Mosberger <davidm@azstarnet.com>, 1995.
 
@@ -22,39 +22,29 @@
 
 	.text
 
-LEAF(__ieee_get_fp_control, 16)
-#ifdef PROF
-	ldgp	gp, 0(pv)
-	lda	sp, -16(sp)
-	.set noat
-	lda	AT, _mcount
-	jsr	AT, (AT), _mcount
-	.set at
-	.prologue 1
-#elif defined PIC
-	lda	sp, -16(sp)
-	.prologue 0
-#else
-	ldgp	gp, 0(pv)
+ENTRY(__ieee_get_fp_control)
+	cfi_startproc
+	PSEUDO_PROLOGUE
+
 	lda	sp, -16(sp)
-	.prologue 1
-#endif
+	cfi_adjust_cfa_offset(16)
 
 	mov	sp, a1
 	ldi	a0, GSI_IEEE_FP_CONTROL
 	ldi	v0, __NR_osf_getsysinfo
 	call_pal PAL_callsys
-	bne	a3, $error
 
-	ldq	v0, 0(sp)
+	ldq	t0, 0(sp)
 	lda	sp, 16(sp)
-	ret
+	cfi_adjust_cfa_offset(-16)
 
-$error:
-	lda	sp, 16(sp)
-	SYSCALL_ERROR_HANDLER
+	bne	a3, SYSCALL_ERROR_LABEL
+
+	mov	t0, v0
+	ret
 
-	END(__ieee_get_fp_control)
+PSEUDO_END(__ieee_get_fp_control)
+	cfi_endproc
 
 libc_hidden_def(__ieee_get_fp_control)
 weak_alias (__ieee_get_fp_control, ieee_get_fp_control)
diff --git a/ports/sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S b/ports/sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S
index 1d425249da..f022b42600 100644
--- a/ports/sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S
+++ b/ports/sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S
@@ -1,5 +1,4 @@
-/* Copyright (C) 1993, 1995, 1996, 1997, 2003, 2004
-   Free Software Foundation, Inc.
+/* Copyright (C) 1993-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by David Mosberger <davidm@azstarnet.com>, 1995.
 
@@ -21,40 +20,27 @@
 #include "kernel_sysinfo.h"
 
 
-LEAF(__ieee_set_fp_control, 16)
-#ifdef PROF
-	ldgp	gp, 0(pv)
-	lda	sp, -16(sp)
-	.set noat
-	lda	AT, _mcount
-	jsr	AT, (AT), _mcount
-	.set at
-	.prologue 1
-#elif defined PIC
-	lda	sp, -16(sp)
-	.prologue 0
-#else
-	ldgp	gp, 0(pv)
+ENTRY(__ieee_set_fp_control)
+	cfi_startproc
+	PSEUDO_PROLOGUE
+
 	lda	sp, -16(sp)
-	.prologue 1
-#endif
+	cfi_adjust_cfa_offset(16)
 
+	ldi	v0, __NR_osf_setsysinfo
 	stq	a0, 0(sp)
 	mov	sp, a1
 	ldi	a0, SSI_IEEE_FP_CONTROL
-	ldi	v0, __NR_osf_setsysinfo
 	call_pal PAL_callsys
 
-	bne	a3, $error
-
 	lda	sp, 16(sp)
-	ret
+	cfi_adjust_cfa_offset(-16)
 
-$error:
-	lda	sp, 16(sp)
-	SYSCALL_ERROR_HANDLER
+	bne	a3, SYSCALL_ERROR_LABEL
+	ret
 
-	END(__ieee_set_fp_control)
+PSEUDO_END(__ieee_set_fp_control)
+	cfi_endproc
 
 libc_hidden_def(__ieee_set_fp_control)
 weak_alias (__ieee_set_fp_control, ieee_set_fp_control)