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* [glibc/azanella/clang] alloc_buffer: Apply asm redirection before first use
@ 2022-10-28 17:38 Adhemerval Zanella
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From: Adhemerval Zanella @ 2022-10-28 17:38 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=51f48cd64298cf9c6368e9994364f38f210597b3
commit 51f48cd64298cf9c6368e9994364f38f210597b3
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Fri Mar 11 15:37:57 2022 -0300
alloc_buffer: Apply asm redirection before first use
Compilers may not be able to apply asm redirections to functions after
these functions are used for the first time, e.g. clang 13.
Diff:
---
include/alloc_buffer.h | 23 +++++++++++++++--------
1 file changed, 15 insertions(+), 8 deletions(-)
diff --git a/include/alloc_buffer.h b/include/alloc_buffer.h
index 1c1dbe0a46..553de607e8 100644
--- a/include/alloc_buffer.h
+++ b/include/alloc_buffer.h
@@ -114,6 +114,9 @@ enum
/* Internal function. Terminate the process using __libc_fatal. */
void __libc_alloc_buffer_create_failure (void *start, size_t size);
+#ifndef _ISOMAC
+libc_hidden_proto (__libc_alloc_buffer_create_failure)
+#endif
/* Create a new allocation buffer. The byte range from START to START
+ SIZE - 1 must be valid, and the allocation buffer allocates
@@ -132,6 +135,9 @@ alloc_buffer_create (void *start, size_t size)
/* Internal function. See alloc_buffer_allocate below. */
struct alloc_buffer __libc_alloc_buffer_allocate (size_t size, void **pptr)
__attribute__ ((nonnull (2)));
+#ifndef _ISOMAC
+libc_hidden_proto (__libc_alloc_buffer_allocate)
+#endif
/* Allocate a buffer of SIZE bytes using malloc. The returned buffer
is in a failed state if malloc fails. *PPTR points to the start of
@@ -333,6 +339,9 @@ void * __libc_alloc_buffer_alloc_array (struct alloc_buffer *buf,
size_t size, size_t align,
size_t count)
__attribute__ ((nonnull (1)));
+#ifndef _ISOMAC
+libc_hidden_proto (__libc_alloc_buffer_alloc_array)
+#endif
/* Obtain a TYPE * pointer to an array of COUNT objects in BUF of
TYPE. Consume these bytes from the buffer. Return NULL and mark
@@ -349,6 +358,9 @@ void * __libc_alloc_buffer_alloc_array (struct alloc_buffer *buf,
struct alloc_buffer __libc_alloc_buffer_copy_bytes (struct alloc_buffer,
const void *, size_t)
__attribute__ ((nonnull (2)));
+#ifndef _ISOMAC
+libc_hidden_proto (__libc_alloc_buffer_copy_bytes)
+#endif
/* Copy SIZE bytes starting at SRC into the buffer. If there is not
enough room in the buffer, the buffer is marked as failed. No
@@ -363,6 +375,9 @@ alloc_buffer_copy_bytes (struct alloc_buffer *buf, const void *src, size_t size)
struct alloc_buffer __libc_alloc_buffer_copy_string (struct alloc_buffer,
const char *)
__attribute__ ((nonnull (2)));
+#ifndef _ISOMAC
+libc_hidden_proto (__libc_alloc_buffer_copy_string)
+#endif
/* Copy the string at SRC into the buffer, including its null
terminator. If there is not enough room in the buffer, the buffer
@@ -377,12 +392,4 @@ alloc_buffer_copy_string (struct alloc_buffer *buf, const char *src)
return result;
}
-#ifndef _ISOMAC
-libc_hidden_proto (__libc_alloc_buffer_alloc_array)
-libc_hidden_proto (__libc_alloc_buffer_allocate)
-libc_hidden_proto (__libc_alloc_buffer_copy_bytes)
-libc_hidden_proto (__libc_alloc_buffer_copy_string)
-libc_hidden_proto (__libc_alloc_buffer_create_failure)
-#endif
-
#endif /* _ALLOC_BUFFER_H */
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