glibc/SOURCES/glibc-upstream-2.34-174.patch

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2022-09-27 14:07:57 +00:00
commit b5a44a6a471aafd3677659a610f32468c40a666b
Author: Noah Goldstein <goldstein.w.n@gmail.com>
Date: Tue Sep 21 18:31:49 2021 -0500
x86: Modify ENTRY in sysdep.h so that p2align can be specified
No bug.
This change adds a new macro ENTRY_P2ALIGN which takes a second
argument, log2 of the desired function alignment.
The old ENTRY(name) macro is just ENTRY_P2ALIGN(name, 4) so this
doesn't affect any existing functionality.
Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com>
(cherry picked from commit fc5bd179ef3a953dff8d1655bd530d0e230ffe71)
diff --git a/sysdeps/x86/sysdep.h b/sysdeps/x86/sysdep.h
index cac1d762fb3f99d0..937180c1bd791570 100644
--- a/sysdeps/x86/sysdep.h
+++ b/sysdeps/x86/sysdep.h
@@ -78,15 +78,18 @@ enum cf_protection_level
#define ASM_SIZE_DIRECTIVE(name) .size name,.-name;
/* Define an entry point visible from C. */
-#define ENTRY(name) \
+#define ENTRY_P2ALIGN(name, alignment) \
.globl C_SYMBOL_NAME(name); \
.type C_SYMBOL_NAME(name),@function; \
- .align ALIGNARG(4); \
+ .align ALIGNARG(alignment); \
C_LABEL(name) \
cfi_startproc; \
_CET_ENDBR; \
CALL_MCOUNT
+/* Common entry 16 byte aligns. */
+#define ENTRY(name) ENTRY_P2ALIGN (name, 4)
+
#undef END
#define END(name) \
cfi_endproc; \