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alloc_buffer: Apply asm redirection before first use

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Compilers may not be able to apply asm redirections to functions after
these functions are used for the first time, e.g. clang 15.

Reviewed-by: Fangrui Song <maskray@google.com>
This commit is contained in:
Adhemerval Zanella 2022-03-11 15:37:57 -03:00
parent 8d98c7c00f
commit 34b358eb03
1 changed files with 15 additions and 8 deletions
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23
include/alloc_buffer.h
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@ -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 */