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This change upgrades to GCC 12.3 and GNU binutils 2.42. The GNU linker appears to have changed things so that only a single de-duplicated str table is present in the binary, and it gets placed wherever the linker wants, regardless of what the linker script says. To cope with that we need to stop using .ident to embed licenses. As such, this change does significant work to revamp how third party licenses are defined in the codebase, using `.section .notice,"aR",@progbits`. This new GCC 12.3 toolchain has support for GNU indirect functions. It lets us support __target_clones__ for the first time. This is used for optimizing the performance of libc string functions such as strlen and friends so far on x86, by ensuring AVX systems favor a second codepath that uses VEX encoding. It shaves some latency off certain operations. It's a useful feature to have for scientific computing for the reasons explained by the test/libcxx/openmp_test.cc example which compiles for fifteen different microarchitectures. Thanks to the upgrades, it's now also possible to use newer instruction sets, such as AVX512FP16, VNNI. Cosmo now uses the %gs register on x86 by default for TLS. Doing it is helpful for any program that links `cosmo_dlopen()`. Such programs had to recompile their binaries at startup to change the TLS instructions. That's not great, since it means every page in the executable needs to be faulted. The work of rewriting TLS-related x86 opcodes, is moved to fixupobj.com instead. This is great news for MacOS x86 users, since we previously needed to morph the binary every time for that platform but now that's no longer necessary. The only platforms where we need fixup of TLS x86 opcodes at runtime are now Windows, OpenBSD, and NetBSD. On Windows we morph TLS to point deeper into the TIB, based on a TlsAlloc assignment, and on OpenBSD/NetBSD we morph %gs back into %fs since the kernels do not allow us to specify a value for the %gs register. OpenBSD users are now required to use APE Loader to run Cosmo binaries and assimilation is no longer possible. OpenBSD kernel needs to change to allow programs to specify a value for the %gs register, or it needs to stop marking executable pages loaded by the kernel as mimmutable(). This release fixes __constructor__, .ctor, .init_array, and lastly the .preinit_array so they behave the exact same way as glibc. We no longer use hex constants to define math.h symbols like M_PI.
53 lines
4 KiB
C
53 lines
4 KiB
C
#ifndef COSMOPOLITAN_LIBC_TINYMATH_ESTRIN_WRAP_INTERNAL_H_
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#define COSMOPOLITAN_LIBC_TINYMATH_ESTRIN_WRAP_INTERNAL_H_
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/*
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* Helper macros for double-precision Estrin polynomial evaluation.
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*
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* Copyright (c) 2022-2023, Arm Limited.
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* SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
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*/
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#define ESTRIN_1_(x, c, i) FMA(x, c(1 + i), c(i))
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#define ESTRIN_2_(x, x2, c, i) FMA(x2, c(2 + i), ESTRIN_1_(x, c, i))
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#define ESTRIN_3_(x, x2, c, i) FMA(x2, ESTRIN_1_(x, c, 2 + i), ESTRIN_1_(x, c, i))
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#define ESTRIN_4_(x, x2, x4, c, i) FMA(x4, c(4 + i), ESTRIN_3_(x, x2, c, i))
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#define ESTRIN_5_(x, x2, x4, c, i) FMA(x4, ESTRIN_1_(x, c, 4 + i), ESTRIN_3_(x, x2, c, i))
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#define ESTRIN_6_(x, x2, x4, c, i) FMA(x4, ESTRIN_2_(x, x2, c, 4 + i), ESTRIN_3_(x, x2, c, i))
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#define ESTRIN_7_(x, x2, x4, c, i) FMA(x4, ESTRIN_3_(x, x2, c, 4 + i), ESTRIN_3_(x, x2, c, i))
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#define ESTRIN_8_(x, x2, x4, x8, c, i) FMA(x8, c(8 + i), ESTRIN_7_(x, x2, x4, c, i))
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#define ESTRIN_9_(x, x2, x4, x8, c, i) FMA(x8, ESTRIN_1_(x, c, 8 + i), ESTRIN_7_(x, x2, x4, c, i))
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#define ESTRIN_10_(x, x2, x4, x8, c, i) FMA(x8, ESTRIN_2_(x, x2, c, 8 + i), ESTRIN_7_(x, x2, x4, c, i))
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#define ESTRIN_11_(x, x2, x4, x8, c, i) FMA(x8, ESTRIN_3_(x, x2, c, 8 + i), ESTRIN_7_(x, x2, x4, c, i))
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#define ESTRIN_12_(x, x2, x4, x8, c, i) FMA(x8, ESTRIN_4_(x, x2, x4, c, 8 + i), ESTRIN_7_(x, x2, x4, c, i))
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#define ESTRIN_13_(x, x2, x4, x8, c, i) FMA(x8, ESTRIN_5_(x, x2, x4, c, 8 + i), ESTRIN_7_(x, x2, x4, c, i))
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#define ESTRIN_14_(x, x2, x4, x8, c, i) FMA(x8, ESTRIN_6_(x, x2, x4, c, 8 + i), ESTRIN_7_(x, x2, x4, c, i))
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#define ESTRIN_15_(x, x2, x4, x8, c, i) FMA(x8, ESTRIN_7_(x, x2, x4, c, 8 + i), ESTRIN_7_(x, x2, x4, c, i))
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#define ESTRIN_16_(x, x2, x4, x8, x16, c, i) FMA(x16, c(16 + i), ESTRIN_15_(x, x2, x4, x8, c, i))
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#define ESTRIN_17_(x, x2, x4, x8, x16, c, i) FMA(x16, ESTRIN_1_(x, c, 16 + i), ESTRIN_15_(x, x2, x4, x8, c, i))
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#define ESTRIN_18_(x, x2, x4, x8, x16, c, i) FMA(x16, ESTRIN_2_(x, x2, c, 16 + i), ESTRIN_15_(x, x2, x4, x8, c, i))
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#define ESTRIN_19_(x, x2, x4, x8, x16, c, i) FMA(x16, ESTRIN_3_(x, x2, c, 16 + i), ESTRIN_15_(x, x2, x4, x8, c, i))
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#define ESTRIN_1(x, c) ESTRIN_1_(x, c, 0)
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#define ESTRIN_2(x, x2, c) ESTRIN_2_(x, x2, c, 0)
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#define ESTRIN_3(x, x2, c) ESTRIN_3_(x, x2, c, 0)
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#define ESTRIN_4(x, x2, x4, c) ESTRIN_4_(x, x2, x4, c, 0)
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#define ESTRIN_5(x, x2, x4, c) ESTRIN_5_(x, x2, x4, c, 0)
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#define ESTRIN_6(x, x2, x4, c) ESTRIN_6_(x, x2, x4, c, 0)
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#define ESTRIN_7(x, x2, x4, c) ESTRIN_7_(x, x2, x4, c, 0)
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#define ESTRIN_8(x, x2, x4, x8, c) ESTRIN_8_(x, x2, x4, x8, c, 0)
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#define ESTRIN_9(x, x2, x4, x8, c) ESTRIN_9_(x, x2, x4, x8, c, 0)
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#define ESTRIN_10(x, x2, x4, x8, c) ESTRIN_10_(x, x2, x4, x8, c, 0)
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#define ESTRIN_11(x, x2, x4, x8, c) ESTRIN_11_(x, x2, x4, x8, c, 0)
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#define ESTRIN_12(x, x2, x4, x8, c) ESTRIN_12_(x, x2, x4, x8, c, 0)
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#define ESTRIN_13(x, x2, x4, x8, c) ESTRIN_13_(x, x2, x4, x8, c, 0)
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#define ESTRIN_14(x, x2, x4, x8, c) ESTRIN_14_(x, x2, x4, x8, c, 0)
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#define ESTRIN_15(x, x2, x4, x8, c) ESTRIN_15_(x, x2, x4, x8, c, 0)
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#define ESTRIN_16(x, x2, x4, x8, x16, c) ESTRIN_16_(x, x2, x4, x8, x16, c, 0)
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#define ESTRIN_17(x, x2, x4, x8, x16, c) ESTRIN_17_(x, x2, x4, x8, x16, c, 0)
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#define ESTRIN_18(x, x2, x4, x8, x16, c) ESTRIN_18_(x, x2, x4, x8, x16, c, 0)
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#define ESTRIN_19(x, x2, x4, x8, x16, c) ESTRIN_19_(x, x2, x4, x8, x16, c, 0)
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// clang-format on
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#endif /* COSMOPOLITAN_LIBC_TINYMATH_ESTRIN_WRAP_INTERNAL_H_ */
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