crosstool-ng/packages/glibc/2.17/0069-uses-power6-mtfsf-when-not-supported.patch

2015-03-11  Martin Sebor  <msebor@redhat.com>

        * sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S
        (__setcontext): Set machine to power6 regardless of whether
        or not _ARCH_PWR6 is defined.
        * sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S
        (__novec_swapcontext): Likewise.

diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S b/sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S
index e47a57a..a1ed419 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S
@@ -79,12 +79,13 @@ ENTRY(__novec_setcontext)
   lfd  fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r31)
   lfd  fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r31)
 
+  .machine push
+  .machine "power6"
+
 # ifdef _ARCH_PWR6
   /* Use the extended four-operand version of the mtfsf insn.  */
   mtfsf  0xff,fp0,1,0
 # else
-  .machine push
-  .machine "power6"
   /* Availability of DFP indicates a 64-bit FPSCR.  */
   andi.  r6,r5,PPC_FEATURE_HAS_DFP
   beq    5f
@@ -95,8 +96,10 @@ ENTRY(__novec_setcontext)
 5:
   mtfsf  0xff,fp0
 6:
-  .machine pop
 # endif /* _ARCH_PWR6 */
+
+  .machine pop
+
   lfd  fp29,(SIGCONTEXT_FP_REGS+(PT_R29*8))(r31)
   lfd  fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r31)
   lfd  fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r31)
@@ -362,12 +365,13 @@ L(has_no_vec):
   lfd  fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r31)
   lfd  fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r31)
 
+  .machine push
+  .machine "power6"
+
 # ifdef _ARCH_PWR6
   /* Use the extended four-operand version of the mtfsf insn.  */
   mtfsf  0xff,fp0,1,0
 # else
-  .machine push
-  .machine "power6"
   /* Availability of DFP indicates a 64-bit FPSCR.  */
   andi.  r6,r5,PPC_FEATURE_HAS_DFP
   beq    7f
@@ -378,8 +382,10 @@ L(has_no_vec):
 7:
   mtfsf  0xff,fp0
 8:
-  .machine pop
 # endif /* _ARCH_PWR6 */
+
+  .machine pop
+
   lfd  fp29,(SIGCONTEXT_FP_REGS+(PT_R29*8))(r31)
   lfd  fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r31)
   lfd  fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r31)
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S b/sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S
index bc02a21..b25904d 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S
@@ -173,6 +173,10 @@ ENTRY(__novec_swapcontext)
   lfd  fp0,(SIGCONTEXT_FP_REGS+(32*8))(r31)
   lfd  fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r31)
   lfd  fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r31)
+
+  .machine push
+  .machine "power6"
+        
 # ifdef _ARCH_PWR6
   /* Use the extended four-operand version of the mtfsf insn.  */
   mtfsf  0xff,fp0,1,0
@@ -189,8 +193,10 @@ ENTRY(__novec_swapcontext)
 5:
   mtfsf  0xff,fp0
 6:
-  .machine pop
 #endif /* _ARCH_PWR6 */
+
+  .machine pop
+
   lfd  fp29,(SIGCONTEXT_FP_REGS+(PT_R29*8))(r31)
   lfd  fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r31)
   lfd  fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r31)
@@ -652,12 +658,14 @@ L(has_no_vec2):
   lfd  fp0,(SIGCONTEXT_FP_REGS+(32*8))(r31)
   lfd  fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r31)
   lfd  fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r31)
+
+  .machine push
+  .machine "power6"
+
 # ifdef _ARCH_PWR6
   /* Use the extended four-operand version of the mtfsf insn.  */
   mtfsf  0xff,fp0,1,0
 # else
-  .machine push
-  .machine "power6"
   /* Availability of DFP indicates a 64-bit FPSCR.  */
   andi.  r6,r8,PPC_FEATURE_HAS_DFP
   beq    7f
@@ -668,8 +676,10 @@ L(has_no_vec2):
 7:
   mtfsf  0xff,fp0
 8:
-  .machine pop
 #endif /* _ARCH_PWR6 */
+
+  .machine pop
+
   lfd  fp29,(SIGCONTEXT_FP_REGS+(PT_R29*8))(r31)
   lfd  fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r31)
   lfd  fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r31)