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| author | Kevin O'Connor <kevin@koconnor.net> | 2009-06-10 21:56:01 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2009-06-10 21:56:01 -0400 |
| commit | c0693941fdb5118164a8161316fdf8e9ebb499d2 (patch) | |
| tree | 4c2ed73a666bed4a8742453262c5899f77f7bfde /src/types.h | |
| parent | 0b04b78972939b8bf00c6b075b3592ea6b7dd643 (diff) | |
| download | seabios-hppa-c0693941fdb5118164a8161316fdf8e9ebb499d2.zip seabios-hppa-c0693941fdb5118164a8161316fdf8e9ebb499d2.tar.gz seabios-hppa-c0693941fdb5118164a8161316fdf8e9ebb499d2.tar.bz2 | |
Do garbage collection of unused sections.
Implement -ffunction-sections and -fdata-sections in both 32bit and
16bit code.
Make sure all sections have unique names (even asm and discarded
sections).
Enhance tools/layoutrom.py script to find all sections reachable from
exported 16bit code - prune all other sections.
Mark sections with "export" if they can be visible outside of code -
these sections wont be dropped when pruning unused sections.
Diffstat (limited to 'src/types.h')
| -rw-r--r-- | src/types.h | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/src/types.h b/src/types.h index 52e508b..a004474 100644 --- a/src/types.h +++ b/src/types.h @@ -23,26 +23,35 @@ union u64_u32_u { #define __VISIBLE __attribute__((externally_visible)) +#define UNIQSEC __FILE__ "." __stringify(__LINE__) + +#define __ASM(code) asm(".section .text.asm." UNIQSEC "\n\t" code) + #if MODE16 == 1 // Notes a function as externally visible in the 16bit code chunk. # define VISIBLE16 __VISIBLE // Notes a function as externally visible in the 32bit code chunk. # define VISIBLE32 // Designate a variable as (only) visible to 16bit code. -# define VAR16 __attribute__((section(".data16." __FILE__ "." __stringify(__LINE__)))) +# define VAR16 __section(".data16." UNIQSEC) // Designate a variable as visible to both 32bit and 16bit code. # define VAR16_32 VAR16 __VISIBLE +// Designate a variable visible externally. +# define VAR16EXPORT __section(".data16.export." UNIQSEC) __VISIBLE // Designate a variable at a specific 16bit address -# define VAR16FIXED(addr) __aligned(1) __VISIBLE __attribute__((section(".fixedaddr." __stringify(addr)))) +# define VAR16FIXED(addr) __aligned(1) __VISIBLE __section(".fixedaddr." __stringify(addr)) // Designate top-level assembler as 16bit only. -# define ASM16(code) asm(".section .text.asm." __FILE__ "." __stringify(__LINE__) "\n\t" code) +# define ASM16(code) __ASM(code) +# define ASM32(code) #else # define VISIBLE16 # define VISIBLE32 __VISIBLE -# define VAR16 __attribute__((section(".discard.var16"))) -# define VAR16_32 VAR16 __VISIBLE __attribute__((weak)) +# define VAR16 __section(".discard.var16." UNIQSEC) +# define VAR16_32 VAR16 __VISIBLE __weak +# define VAR16EXPORT VAR16_32 # define VAR16FIXED(addr) VAR16_32 # define ASM16(code) +# define ASM32(code) __ASM(code) #endif #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) @@ -54,6 +63,9 @@ union u64_u32_u { #define NULL ((void *)0) +#define __weak __attribute__((weak)) +#define __section(S) __attribute__((section(S))) + #define PACKED __attribute__((packed)) #define __aligned(x) __attribute__((aligned(x))) |