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https://github.com/jart/cosmopolitan.git
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550b52abf6
- Introduce epoll_pwait() - Rewrite -ftrapv and ffs() libraries in C code - Use more FreeBSD code in math function library - Get significantly more tests passing on qemu-aarch64 - Fix many Musl long double functions that were broken on AARCH64
38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
#ifndef COSMOPOLITAN_LIBC_LINUX_MMAP_H_
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#define COSMOPOLITAN_LIBC_LINUX_MMAP_H_
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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forceinline long LinuxMmap(void *addr, size_t size, long prot, long flags,
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long fd, long off) {
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#ifdef __x86_64__
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long rc;
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register long flags_ asm("r10") = flags;
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register long fd_ asm("r8") = fd;
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register long off_ asm("r9") = off;
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asm volatile("syscall"
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: "=a"(rc)
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: "0"(9), "D"(addr), "S"(size), "d"(prot), "r"(flags_), "r"(fd_),
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"r"(off_)
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: "rcx", "r11", "memory");
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return rc;
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#elif defined(__aarch64__)
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register long r0 asm("x0") = (long)addr;
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register long r1 asm("x1") = (long)size;
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register long r2 asm("x2") = (long)prot;
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register long r3 asm("x3") = (long)flags;
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register long r4 asm("x4") = (long)fd;
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register long r5 asm("x5") = (long)off;
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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"(222), "r"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4), "r"(r5)
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: "x8", "memory");
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return res_x0;
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#else
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#error "unsupported architecture"
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#endif
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}
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_LINUX_MMAP_H_ */
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