kopie van
git://git.musl-libc.org/musl
gesynchroniseerd 2025-01-18 15:43:41 +00:00
01d9fe4d9f
These are mostly copied from riscv64. _Addr and _Reg had to become int to match compiler-controlled parts of the ABI (result type of sizeof, etc.). There is no kernel stat struct; the userspace stat matches glibc in the sizes and offsets of all fields (including glibc's __dev_t __pad1). The jump buffer is 12 words larger to account for 12 saved double-precision floats; additionally it should be 64-bit aligned to save doubles. The syscall list was significantly revised by deleting all time32 and pre-statx syscalls, and renaming several syscalls that have different names depending on __BITS_PER_LONG, notably mmap2 and _llseek. futex was added as an alias to futex_time64 since it is widely used by software which does not pass time arguments.
21 regels
438 B
C
21 regels
438 B
C
#define a_barrier a_barrier
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static inline void a_barrier()
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{
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__asm__ __volatile__ ("fence rw,rw" : : : "memory");
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}
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#define a_cas a_cas
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static inline int a_cas(volatile int *p, int t, int s)
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{
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int old, tmp;
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__asm__ __volatile__ (
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"\n1: lr.w.aqrl %0, (%2)\n"
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" bne %0, %3, 1f\n"
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" sc.w.aqrl %1, %4, (%2)\n"
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" bnez %1, 1b\n"
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"1:"
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: "=&r"(old), "=&r"(tmp)
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: "r"(p), "r"((long)t), "r"((long)s)
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: "memory");
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return old;
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}
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