mirror of
https://github.com/jart/cosmopolitan.git
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fa20edc44d
- Remove most __ASSEMBLER__ __LINKER__ ifdefs - Rename libc/intrin/bits.h to libc/serialize.h - Block pthread cancelation in fchmodat() polyfill - Remove `clang-format off` statements in third_party
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
#ifndef COSMOPOLITAN_LIBC_CALLS_PRCTL_INTERNAL_H_
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#define COSMOPOLITAN_LIBC_CALLS_PRCTL_INTERNAL_H_
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#include "libc/dce.h"
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#include "libc/sysv/consts/nrlinux.h"
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COSMOPOLITAN_C_START_
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forceinline int sys_prctl(int op, long a, long b, long c, long d) {
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int rc;
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#ifdef __x86_64__
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register long r10 asm("r10") = c;
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register long r8 asm("r8") = d;
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asm volatile("syscall"
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: "=a"(rc)
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: "0"(__NR_linux_prctl), "D"(op), "S"(a), "d"(b), "r"(r10),
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"r"(r8)
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: "rcx", "r11", "memory");
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#elif defined(__aarch64__)
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register long r0 asm("x0") = op;
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register long r1 asm("x1") = a;
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register long r2 asm("x2") = b;
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register long r3 asm("x3") = c;
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register long r4 asm("x4") = d;
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register long res_x0 asm("x0");
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asm volatile("mov\tx8,%1\n\t"
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"svc\t0"
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: "=r"(res_x0)
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: "i"(__NR_linux_prctl), "r"(r0), "r"(r1), "r"(r2), "r"(r3),
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"r"(r4)
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: "x8", "memory");
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rc = res_x0;
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#endif
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return rc;
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}
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_LIBC_CALLS_PRCTL_INTERNAL_H_ */
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