diff options
| author | YunQiang Su <syq@debian.org> | 2020-03-07 10:39:45 +0800 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-03-19 13:09:33 +0100 |
| commit | e585b768da111f2c2d413de6214e83bbdfee8f22 (patch) | |
| tree | 1eec1484c64b175aa039958e89346865901d4817 /arch/mips/include | |
| parent | be2807643302bb4161b6c009f569e63f0f79672c (diff) | |
Use ELF_BASE_PLATFORM to pass ISA level
Some userland application/program runtime/dynamic loaded need to
know about the current ISA level to use the best runtime.
While kernel doesn't provides this info.
ELF_PLATFORM only provides some info about the CPU, with very few info,
for example, the value is "mips" for both 24Kc and P6600.
Currently ELF_BASE_PLATFORM is not used by MIPS (only by powerpc).
So we cant set its value as:
mips2, mips3, mips4, mips5,
mips32, mips32r2, mips32r6
mips64, mips64r2, mips64r6
Then in userland, we can get it by:
getauxval(AT_BASE_PLATFORM)
The only problem is that it seems has different defination than ppc:
on ppc, it is the mircoarchitecture
while now we use it as ISA level on MIPS.
Signed-off-by: YunQiang Su <syq@debian.org>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/include')
| -rw-r--r-- | arch/mips/include/asm/elf.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/mips/include/asm/elf.h b/arch/mips/include/asm/elf.h index f8f44b1a6cbb..5aa29ced6970 100644 --- a/arch/mips/include/asm/elf.h +++ b/arch/mips/include/asm/elf.h @@ -445,6 +445,9 @@ extern unsigned int elf_hwcap; #define ELF_PLATFORM __elf_platform extern const char *__elf_platform; +#define ELF_BASE_PLATFORM __elf_base_platform +extern const char *__elf_base_platform; + /* * See comments in asm-alpha/elf.h, this is the same thing * on the MIPS. |