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synced 2025-03-18 16:43:07 +03:00
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.
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@ -1,6 +1,7 @@
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#define __SYSCALL_LL(x) \
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#define __SYSCALL_LL_E(x) \
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((union { long long ll; long l[2]; }){ .ll = x }).l[0], \
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((union { long long ll; long l[2]; }){ .ll = x }).l[1]
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#define __SYSCALL_LL_O(x) 0, __SYSCALL_LL_E((x))
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long (__syscall)(long, ...);
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@ -1,6 +1,7 @@
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#define __SYSCALL_LL(x) \
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#define __SYSCALL_LL_E(x) \
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((union { long long ll; long l[2]; }){ .ll = x }).l[0], \
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((union { long long ll; long l[2]; }){ .ll = x }).l[1]
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#define __SYSCALL_LL_O(x) __SYSCALL_LL_E((x))
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static inline long __syscall0(long __n)
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{
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@ -1,4 +1,5 @@
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#define __SYSCALL_LL(x) (x)
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#define __SYSCALL_LL_E(x) (x)
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#define __SYSCALL_LL_O(x) (x)
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static inline long __syscall0(long __n)
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{
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@ -3,6 +3,6 @@
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int posix_fadvise(int fd, off_t base, off_t len, int advice)
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{
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return -__syscall(SYS_fadvise, fd, __SYSCALL_LL(base),
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__SYSCALL_LL(len), advice);
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return -(__syscall)(SYS_fadvise, fd, __SYSCALL_LL_O(base),
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__SYSCALL_LL_E(len), advice);
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}
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@ -3,6 +3,6 @@
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int posix_fallocate(int fd, off_t base, off_t len)
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{
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return -__syscall(SYS_fallocate, fd, __SYSCALL_LL(base),
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__SYSCALL_LL(len));
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return -__syscall(SYS_fallocate, fd, __SYSCALL_LL_O(base),
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__SYSCALL_LL_E(len));
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}
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@ -4,7 +4,7 @@
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int ftruncate(int fd, off_t length)
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{
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return syscall(SYS_ftruncate, fd, __SYSCALL_LL(length));
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return syscall(SYS_ftruncate, fd, __SYSCALL_LL_O(length));
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}
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LFS64(ftruncate);
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@ -4,7 +4,7 @@
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ssize_t pread(int fd, void *buf, size_t size, off_t ofs)
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{
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return syscall_cp(SYS_pread, fd, buf, size, __SYSCALL_LL(ofs));
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return syscall_cp(SYS_pread, fd, buf, size, __SYSCALL_LL_O(ofs));
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}
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LFS64(pread);
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@ -4,7 +4,7 @@
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ssize_t pwrite(int fd, const void *buf, size_t size, off_t ofs)
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{
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return syscall_cp(SYS_pwrite, fd, buf, size, __SYSCALL_LL(ofs));
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return syscall_cp(SYS_pwrite, fd, buf, size, __SYSCALL_LL_O(ofs));
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}
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LFS64(pwrite);
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@ -4,7 +4,7 @@
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int truncate(const char *path, off_t length)
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{
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return syscall(SYS_truncate, path, __SYSCALL_LL(length));
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return syscall(SYS_truncate, path, __SYSCALL_LL_O(length));
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}
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LFS64(truncate);
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