alpha: Tidy up ieee_get/set_fp_control syscalls

git-mirror · Aug 8, 2012 · 6ee732b · 6ee732b
1 parent 6360984
commit 6ee732b
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Showing 3 changed files with 31 additions and 50 deletions.
diff --git 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
@@ -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
@@ -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)