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https://github.com/jart/cosmopolitan.git
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8f522cb702
This change progresses our AARCH64 support:
- The AARCH64 build and tests are now passing
- Add 128-bit floating-point support to printf()
- Fix clone() so it initializes cosmo's x28 TLS register
- Fix TLS memory layout issue with aarch64 _Alignas vars
- Revamp microbenchmarking tools so they work on aarch64
- Make some subtle improvements to aarch64 crash reporting
- Make kisdangerous() memory checks more accurate on aarch64
- Remove sys_open() since it's not available on Linux AARCH64
This change makes general improvements to Cosmo and Redbean:
- Introduce GetHostIsa() function in Redbean
- You can now feature check using pledge(0, 0)
- You can now feature check using unveil("",0)
- Refactor some more x86-specific asm comments
- Refactor and write docs for some libm functions
- Make the mmap() API behave more similar to Linux
- Fix WIFSIGNALED() which wrongly returned true for zero
- Rename some obscure cosmo keywords from noFOO to dontFOO
38 lines
1.2 KiB
C
38 lines
1.2 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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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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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 /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_CALLS_PRCTL_INTERNAL_H_ */
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