File 0004-x86_64-Set-DL_RUNTIME_UNALIGNED_VEC_SIZE-t... of Package glibc

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File 0004-x86_64-Set-DL_RUNTIME_UNALIGNED_VEC_SIZE-to-8.patch of Package glibc (Revision 5f57e24bc22b264ef0021a898c682539)

Currently displaying revision 5f57e24bc22b264ef0021a898c682539 , Show latest

2016-02-22  H.J. Lu  <hongjiu.lu@intel.com>

[BZ #19679]
	* sysdeps/x86_64/dl-trampoline.S (DL_RUNIME_UNALIGNED_VEC_SIZE):
	Renamed to ...
	(DL_RUNTIME_UNALIGNED_VEC_SIZE): This.  Set to 8.
	(DL_RUNIME_RESOLVE_REALIGN_STACK): Renamed to ...
	(DL_RUNTIME_RESOLVE_REALIGN_STACK): This.  Updated.
	(DL_RUNIME_RESOLVE_REALIGN_STACK): Renamed to ...
	(DL_RUNTIME_RESOLVE_REALIGN_STACK): This.
	* sysdeps/x86_64/dl-trampoline.h
	(DL_RUNIME_RESOLVE_REALIGN_STACK): Renamed to ...
	(DL_RUNTIME_RESOLVE_REALIGN_STACK): This.

Index: glibc-2.23/sysdeps/x86_64/dl-trampoline.S
===================================================================
--- glibc-2.23.orig/sysdeps/x86_64/dl-trampoline.S
+++ glibc-2.23/sysdeps/x86_64/dl-trampoline.S
@@ -33,15 +33,19 @@
 # define DL_STACK_ALIGNMENT 8
 #endif
 
-#ifndef DL_RUNIME_UNALIGNED_VEC_SIZE
-/* The maximum size of unaligned vector load and store.  */
-# define DL_RUNIME_UNALIGNED_VEC_SIZE 16
+#ifndef DL_RUNTIME_UNALIGNED_VEC_SIZE
+/* The maximum size in bytes of unaligned vector load and store in the
+   dynamic linker.  Since SSE optimized memory/string functions with
+   aligned SSE register load and store are used in the dynamic linker,
+   we must set this to 8 so that _dl_runtime_resolve_sse will align the
+   stack before calling _dl_fixup.  */
+# define DL_RUNTIME_UNALIGNED_VEC_SIZE 8
 #endif
 
 /* True if _dl_runtime_resolve should align stack to VEC_SIZE bytes.  */
-#define DL_RUNIME_RESOLVE_REALIGN_STACK \
+#define DL_RUNTIME_RESOLVE_REALIGN_STACK \
   (VEC_SIZE > DL_STACK_ALIGNMENT \
-   && VEC_SIZE > DL_RUNIME_UNALIGNED_VEC_SIZE)
+   && VEC_SIZE > DL_RUNTIME_UNALIGNED_VEC_SIZE)
 
 /* Align vector register save area to 16 bytes.  */
 #define REGISTER_SAVE_VEC_OFF	0
@@ -76,7 +80,7 @@
 #ifdef HAVE_AVX512_ASM_SUPPORT
 # define VEC_SIZE		64
 # define VMOVA			vmovdqa64
-# if DL_RUNIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT
+# if DL_RUNTIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT
 #  define VMOV			vmovdqa64
 # else
 #  define VMOV			vmovdqu64
@@ -100,7 +104,7 @@ strong_alias (_dl_runtime_profile_avx, _
 
 #define VEC_SIZE		32
 #define VMOVA			vmovdqa
-#if DL_RUNIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT
+#if DL_RUNTIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT
 # define VMOV			vmovdqa
 #else
 # define VMOV			vmovdqu
@@ -119,7 +123,7 @@ strong_alias (_dl_runtime_profile_avx, _
 /* movaps/movups is 1-byte shorter.  */
 #define VEC_SIZE		16
 #define VMOVA			movaps
-#if DL_RUNIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT
+#if DL_RUNTIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT
 # define VMOV			movaps
 #else
 # define VMOV			movups
Index: glibc-2.23/sysdeps/x86_64/dl-trampoline.h
===================================================================
--- glibc-2.23.orig/sysdeps/x86_64/dl-trampoline.h
+++ glibc-2.23/sysdeps/x86_64/dl-trampoline.h
@@ -30,7 +30,7 @@
 #undef REGISTER_SAVE_AREA
 #undef LOCAL_STORAGE_AREA
 #undef BASE
-#if DL_RUNIME_RESOLVE_REALIGN_STACK
+#if DL_RUNTIME_RESOLVE_REALIGN_STACK
 # define REGISTER_SAVE_AREA	(REGISTER_SAVE_AREA_RAW + 8)
 /* Local stack area before jumping to function address: RBX.  */
 # define LOCAL_STORAGE_AREA	8
@@ -57,7 +57,7 @@
 	cfi_startproc
 _dl_runtime_resolve:
 	cfi_adjust_cfa_offset(16) # Incorporate PLT
-#if DL_RUNIME_RESOLVE_REALIGN_STACK
+#if DL_RUNTIME_RESOLVE_REALIGN_STACK
 # if LOCAL_STORAGE_AREA != 8
 #  error LOCAL_STORAGE_AREA must be 8
 # endif
@@ -146,7 +146,7 @@ _dl_runtime_resolve:
 	VMOV (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 5)(%rsp), %VEC(5)
 	VMOV (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 6)(%rsp), %VEC(6)
 	VMOV (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 7)(%rsp), %VEC(7)
-#if DL_RUNIME_RESOLVE_REALIGN_STACK
+#if DL_RUNTIME_RESOLVE_REALIGN_STACK
 	mov %RBX_LP, %RSP_LP
 	cfi_def_cfa_register(%rsp)
 	movq (%rsp), %rbx

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File 0004-x86_64-Set-DL_RUNTIME_UNALIGNED_VEC_SIZE-to-8.patch of Package glibc (Revision 5f57e24bc22b264ef0021a898c682539)

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