[glibc/google/grte/v5-2.27/master] Make powerpc .machine directives be gcc-only

[glibc/google/grte/v5-2.27/master] Make powerpc .machine directives be gcc-only

[Fangrui Song]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e21102f77ea0d18e55eba343acd7b2af6bdf648f

commit e21102f77ea0d18e55eba343acd7b2af6bdf648f
Author: Stan Shebs <stanshebs@google.com>
Date:   Fri Aug 27 16:42:33 2021 -0700

    Make powerpc .machine directives be gcc-only

Diff:
---
 sysdeps/powerpc/powerpc64/fpu/s_isnan.S                 | 5 ++++-
 sysdeps/powerpc/sysdep.h                                | 6 ++++++
 sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S  | 2 +-
 sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S | 2 +-
 4 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/sysdeps/powerpc/powerpc64/fpu/s_isnan.S b/sysdeps/powerpc/powerpc64/fpu/s_isnan.S
index 12d23969ee..b7d9f0840f 100644
--- a/sysdeps/powerpc/powerpc64/fpu/s_isnan.S
+++ b/sysdeps/powerpc/powerpc64/fpu/s_isnan.S
@@ -24,7 +24,11 @@
 ENTRY_TOCLESS (__isnan, 4)
 	CALL_MCOUNT 0
 	mffs	fp0
+#if defined __clang__
+	mtfsb0	30 /* reset_fpscr_bit (FPSCR_VE) */
+#else
 	mtfsb0	4*cr6+lt /* reset_fpscr_bit (FPSCR_VE) */
+#endif
 	fcmpu	cr7,fp1,fp1
 	mtfsf	255,fp0
 	li	r3,0
@@ -53,4 +57,3 @@ compat_symbol (libc, __isnan, __isnanl, GLIBC_2_0);
 compat_symbol (libc, isnan, isnanl, GLIBC_2_0);
 # endif
 #endif
-
diff --git a/sysdeps/powerpc/sysdep.h b/sysdeps/powerpc/sysdep.h
index 8a6d236caa..40398645b1 100644
--- a/sysdeps/powerpc/sysdep.h
+++ b/sysdeps/powerpc/sysdep.h
@@ -166,6 +166,12 @@
 #define ALIGNARG(log2) log2
 #define ASM_SIZE_DIRECTIVE(name) .size name,.-name
 
+#if defined __clang__
+#define DOT_MACHINE(str)
+#else
+#define DOT_MACHINE(str) .machine str
+#endif
+
 #else
 
 /* Linux kernel powerpc documentation [1] states issuing a syscall inside a
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S b/sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S
index c95e3a14db..239af286ce 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S
@@ -503,7 +503,7 @@ L(error_exit):
      R1 pointing at the dummy frame) state.  We do have the ucontext
      address in R3, so simply copy R3 to R1 before the syscall.  */
 L(do_sigret):
-  mr   r1,r3,
+  mr   r1,r3
   li   r0,SYS_ify(rt_sigreturn)
   sc
   /* No return.  */
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S b/sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S
index 50f7233080..4caa76b6a3 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S
@@ -787,7 +787,7 @@ L(error_exit):
      R1 pointing at the dummy frame) state.  We do have the ucontext
      address in R3, so simply copy R3 to R1 before the syscall.  */
 L(do_sigret):
-  mr   r1,r3,
+  mr   r1,r3
   li   r0,SYS_ify(rt_sigreturn)
   sc
   /* No return.  */