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| author | Rich Felker <dalias@aerifal.cx> | 2011-09-21 20:11:10 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2011-09-21 20:11:10 -0400 |
| commit | 0b6eb2dfb2e84a8a51906e7634f3d5edc230b058 (patch) | |
| tree | 9a1c1c54a2c1807c742c55c9d8deb1a839c3f9d8 /arch | |
| parent | d30c331d1f3262223a99408ff2d49641a46ce409 (diff) | |
| download | musl-0b6eb2dfb2e84a8a51906e7634f3d5edc230b058.tar.gz musl-0b6eb2dfb2e84a8a51906e7634f3d5edc230b058.tar.xz musl-0b6eb2dfb2e84a8a51906e7634f3d5edc230b058.zip | |
update syscalls with off_t arguments to handle argument alignment, if needed
the arm syscall abi requires 64-bit arguments to be aligned on an even register boundary. these new macros facilitate meeting the abi requirement without imposing significant ugliness on the code.
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/bits/syscall.h | 3 | ||||
| -rw-r--r-- | arch/i386/bits/syscall.h | 3 | ||||
| -rw-r--r-- | arch/x86_64/bits/syscall.h | 3 |
3 files changed, 6 insertions, 3 deletions
diff --git a/arch/arm/bits/syscall.h b/arch/arm/bits/syscall.h index 380ac3ca..b0379e02 100644 --- a/arch/arm/bits/syscall.h +++ b/arch/arm/bits/syscall.h @@ -1,6 +1,7 @@ -#define __SYSCALL_LL(x) \ +#define __SYSCALL_LL_E(x) \ ((union { long long ll; long l[2]; }){ .ll = x }).l[0], \ ((union { long long ll; long l[2]; }){ .ll = x }).l[1] +#define __SYSCALL_LL_O(x) 0, __SYSCALL_LL_E((x)) long (__syscall)(long, ...); diff --git a/arch/i386/bits/syscall.h b/arch/i386/bits/syscall.h index 88cd0d7d..8d673186 100644 --- a/arch/i386/bits/syscall.h +++ b/arch/i386/bits/syscall.h @@ -1,6 +1,7 @@ -#define __SYSCALL_LL(x) \ +#define __SYSCALL_LL_E(x) \ ((union { long long ll; long l[2]; }){ .ll = x }).l[0], \ ((union { long long ll; long l[2]; }){ .ll = x }).l[1] +#define __SYSCALL_LL_O(x) __SYSCALL_LL_E((x)) static inline long __syscall0(long __n) { diff --git a/arch/x86_64/bits/syscall.h b/arch/x86_64/bits/syscall.h index 2339d2e5..5eeb8a69 100644 --- a/arch/x86_64/bits/syscall.h +++ b/arch/x86_64/bits/syscall.h @@ -1,4 +1,5 @@ -#define __SYSCALL_LL(x) (x) +#define __SYSCALL_LL_E(x) (x) +#define __SYSCALL_LL_O(x) (x) static inline long __syscall0(long __n) { |