67 lines · cpp
1//===-- Implementation of setjmp ------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/__support/common.h"10#include "src/__support/macros/config.h"11#include "src/setjmp/setjmp_impl.h"12 13#if !defined(LIBC_TARGET_ARCH_IS_ANY_RISCV)14#error "Invalid file include"15#endif16 17#define STORE_IMPL(insns, reg, val) \18 LIBC_INLINE_ASM(#insns " " #reg ", %0\n\t" : : "m"(val) :)19 20#ifdef LIBC_TARGET_ARCH_IS_RISCV3221#define STORE(reg, val) STORE_IMPL(sw, reg, val)22#define STORE_FP(reg, val) STORE_IMPL(fsw, reg, val)23#else24#define STORE(reg, val) STORE_IMPL(sd, reg, val)25#define STORE_FP(reg, val) STORE_IMPL(fsd, reg, val)26#endif27 28namespace LIBC_NAMESPACE_DECL {29 30LLVM_LIBC_FUNCTION(int, setjmp, (jmp_buf buf)) {31 STORE(ra, buf->__pc);32 STORE(s0, buf->__regs[0]);33 STORE(s1, buf->__regs[1]);34 STORE(s2, buf->__regs[2]);35 STORE(s3, buf->__regs[3]);36 STORE(s4, buf->__regs[4]);37 STORE(s5, buf->__regs[5]);38 STORE(s6, buf->__regs[6]);39 STORE(s7, buf->__regs[7]);40 STORE(s8, buf->__regs[8]);41 STORE(s9, buf->__regs[9]);42 STORE(s10, buf->__regs[10]);43 STORE(s11, buf->__regs[11]);44 STORE(sp, buf->__sp);45 46#if __riscv_float_abi_double47 STORE_FP(fs0, buf->__fpregs[0]);48 STORE_FP(fs1, buf->__fpregs[1]);49 STORE_FP(fs2, buf->__fpregs[2]);50 STORE_FP(fs3, buf->__fpregs[3]);51 STORE_FP(fs4, buf->__fpregs[4]);52 STORE_FP(fs5, buf->__fpregs[5]);53 STORE_FP(fs6, buf->__fpregs[6]);54 STORE_FP(fs7, buf->__fpregs[7]);55 STORE_FP(fs8, buf->__fpregs[8]);56 STORE_FP(fs9, buf->__fpregs[9]);57 STORE_FP(fs10, buf->__fpregs[10]);58 STORE_FP(fs11, buf->__fpregs[11]);59#elif defined(__riscv_float_abi_single)60#error "setjmp implementation not available for the target architecture."61#endif62 63 return 0;64}65 66} // namespace LIBC_NAMESPACE_DECL67