From: Noah Goldstein <goldstein.w.n@gmail.com>
To: libc-alpha@sourceware.org
Subject: [PATCH v1 2/3] x86: Modify ENTRY in sysdep.h so that p2align can be specified
Date: Sun, 26 Sep 2021 15:53:06 -0500 [thread overview]
Message-ID: <20210926205306.900081-2-goldstein.w.n@gmail.com> (raw)
In-Reply-To: <20210926205306.900081-1-goldstein.w.n@gmail.com>
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>
---
Note this is a duplicate of:
[v2,1/2] x86: Modify ENTRY in sysdep.h so that p2align can be specified
https://patchwork.sourceware.org/project/glibc/patch/20210922051657.1655745-1-goldstein.w.n@gmail.com/
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; \
--
2.25.1
next prev parent reply other threads:[~2021-09-26 20:53 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-26 20:53 [PATCH v1 1/3] benchtests: Add medium cases and increase iters in bench-memset.c Noah Goldstein
2021-09-26 20:53 ` Noah Goldstein [this message]
2021-09-27 16:07 ` [PATCH v1 2/3] x86: Modify ENTRY in sysdep.h so that p2align can be specified Noah Goldstein
2021-10-08 14:27 ` H.J. Lu
2021-10-08 17:20 ` Noah Goldstein
2022-04-23 1:13 ` Sunil Pandey
2021-09-26 20:53 ` [PATCH v1 3/3] x86: Optimize memset-vec-unaligned-erms.S Noah Goldstein
2021-09-26 20:55 ` Noah Goldstein
2021-10-12 15:23 ` H.J. Lu
2021-10-12 19:01 ` Noah Goldstein
2022-04-23 1:19 ` Sunil Pandey
2021-10-05 16:33 ` [PATCH v1 1/3] benchtests: Add medium cases and increase iters in bench-memset.c Noah Goldstein
2021-10-08 19:39 ` H.J. Lu
2021-10-08 21:04 ` Noah Goldstein
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