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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
55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
/* clang-format off */
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/* ===-- fixunsdfdi.c - Implement __fixunsdfdi -----------------------------===
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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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__static_yoink("huge_compiler_rt_license");
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#define DOUBLE_PRECISION
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#include "third_party/compiler_rt/fp_lib.inc"
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#ifndef __SOFT_FP__
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/* Support for systems that have hardware floating-point; can set the invalid
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* flag as a side-effect of computation.
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*/
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COMPILER_RT_ABI du_int
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__fixunsdfdi(double a)
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{
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if (a <= 0.0) return 0;
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su_int high = a / 4294967296.f; /* a / 0x1p32f; */
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su_int low = a - (double)high * 4294967296.f; /* high * 0x1p32f; */
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return ((du_int)high << 32) | low;
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}
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#else
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/* Support for systems that don't have hardware floating-point; there are no
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* flags to set, and we don't want to code-gen to an unknown soft-float
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* implementation.
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*/
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typedef du_int fixuint_t;
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#include "third_party/compiler_rt/fp_fixuint_impl.inc"
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COMPILER_RT_ABI du_int
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__fixunsdfdi(fp_t a) {
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return __fixuint(a);
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}
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#endif
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#if defined(__ARM_EABI__)
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#if defined(COMPILER_RT_ARMHF_TARGET)
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AEABI_RTABI du_int __aeabi_d2ulz(fp_t a) {
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return __fixunsdfdi(a);
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}
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#else
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AEABI_RTABI du_int __aeabi_d2ulz(fp_t a) COMPILER_RT_ALIAS(__fixunsdfdi);
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#endif
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#endif
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