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https://github.com/jart/cosmopolitan.git
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7e0a09feec
This change ports APE Loader to Linux AARCH64, so that Raspberry Pi users can run programs like redbean, without the executable needing to modify itself. Progress has also slipped into this change on the issue of making progress better conforming to user expectations and industry standards regarding which symbols we're allowed to declare
32 lines
909 B
C
32 lines
909 B
C
/* clang-format off */
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/*===-- absvdi2.c - Implement __absvdi2 -----------------------------------===
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*
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* The LLVM Compiler Infrastructure
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*
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* This file is dual licensed under the MIT and the University of Illinois Open
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* Source Licenses. See LICENSE.TXT for details.
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*
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*===----------------------------------------------------------------------===
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*
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* This file implements __absvdi2 for the compiler_rt library.
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*
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*===----------------------------------------------------------------------===
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*/
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__static_yoink("huge_compiler_rt_license");
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#include "third_party/compiler_rt/int_lib.h"
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/* Returns: absolute value */
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/* Effects: aborts if abs(x) < 0 */
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COMPILER_RT_ABI di_int
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__absvdi2(di_int a)
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{
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const int N = (int)(sizeof(di_int) * CHAR_BIT);
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if (a == ((di_int)1 << (N-1)))
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compilerrt_abort();
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const di_int t = a >> (N - 1);
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return (a ^ t) - t;
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}
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