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| author | Michael Brown | 2005-05-02 18:21:52 +0200 |
|---|---|---|
| committer | Michael Brown | 2005-05-02 18:21:52 +0200 |
| commit | 60b82eb5cdfeea33cddc7740a3eb30d41d4192a4 (patch) | |
| tree | 34883b316032f86d1b200d0ae7680aa3e3156307 /src/include/compiler.h | |
| parent | Correct symbol violations reported by "make symcheck" (diff) | |
| download | ipxe-60b82eb5cdfeea33cddc7740a3eb30d41d4192a4.tar.gz ipxe-60b82eb5cdfeea33cddc7740a3eb30d41d4192a4.tar.xz ipxe-60b82eb5cdfeea33cddc7740a3eb30d41d4192a4.zip | |
Moved definition of __shared into compiler.h
Diffstat (limited to 'src/include/compiler.h')
| -rw-r--r-- | src/include/compiler.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/include/compiler.h b/src/include/compiler.h index 4fe4f025..df0a01a6 100644 --- a/src/include/compiler.h +++ b/src/include/compiler.h @@ -71,6 +71,23 @@ __asm__ ( ".equ\tDEBUG_LEVEL, " DEBUG_SYMBOL_STR ); #define __unused __attribute__((unused)) #define __used __attribute__((used)) +/* + * To save space in the binary when multiple-driver images are + * compiled, uninitialised data areas can be shared between drivers. + * This will typically be used to share statically-allocated receive + * and transmit buffers between drivers. + * + * Use as e.g. + * + * struct { + * char rx_buf[NUM_RX_BUF][RX_BUF_SIZE]; + * char tx_buf[TX_BUF_SIZE]; + * } my_static_data __shared; + * + */ + +#define __shared __asm__ ( "_shared_bss" ); + #endif /* ASSEMBLY */ #endif /* COMPILER_H */ |