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From: Sunil Pandey <skpgkp2@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc/release/2.34/master] x86: Modify ENTRY in sysdep.h so that p2align can be specified Date: Wed, 27 Apr 2022 02:00:31 +0000 (GMT) [thread overview] Message-ID: <20220427020031.839ED385734F@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b5a44a6a471aafd3677659a610f32468c40a666b 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: --- sysdeps/x86/sysdep.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/sysdeps/x86/sysdep.h b/sysdeps/x86/sysdep.h index cac1d762fb..937180c1bd 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; \
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