libc/src/setjmp/riscv64/setjmp.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-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/__support/common.h"
  10 #include "src/setjmp/setjmp_impl.h"
  11
  12 #include <setjmp.h>
  13
  14 #if !defined(LIBC_TARGET_ARCH_IS_RISCV64)
  15 #error "Invalid file include"
  16 #endif
  17
  18 namespace __llvm_libc {
  19
  20 LLVM_LIBC_FUNCTION(int, setjmp, (__jmp_buf * buf)) {
  21   LIBC_INLINE_ASM("sd ra, %0\n\t" : : "m"(buf->__pc) :);
  22   LIBC_INLINE_ASM("sd s0, %0\n\t" : : "m"(buf->__regs[0]) :);
  23   LIBC_INLINE_ASM("sd s1, %0\n\t" : : "m"(buf->__regs[1]) :);
  24   LIBC_INLINE_ASM("sd s2, %0\n\t" : : "m"(buf->__regs[2]) :);
  25   LIBC_INLINE_ASM("sd s3, %0\n\t" : : "m"(buf->__regs[3]) :);
  26   LIBC_INLINE_ASM("sd s4, %0\n\t" : : "m"(buf->__regs[4]) :);
  27   LIBC_INLINE_ASM("sd s5, %0\n\t" : : "m"(buf->__regs[5]) :);
  28   LIBC_INLINE_ASM("sd s6, %0\n\t" : : "m"(buf->__regs[6]) :);
  29   LIBC_INLINE_ASM("sd s7, %0\n\t" : : "m"(buf->__regs[7]) :);
  30   LIBC_INLINE_ASM("sd s8, %0\n\t" : : "m"(buf->__regs[8]) :);
  31   LIBC_INLINE_ASM("sd s9, %0\n\t" : : "m"(buf->__regs[9]) :);
  32   LIBC_INLINE_ASM("sd s10, %0\n\t" : : "m"(buf->__regs[10]) :);
  33   LIBC_INLINE_ASM("sd s11, %0\n\t" : : "m"(buf->__regs[11]) :);
  34   LIBC_INLINE_ASM("sd sp, %0\n\t" : : "m"(buf->__sp) :);
  35
  36 #if __riscv_float_abi_double
  37   LIBC_INLINE_ASM("fsd fs0, %0\n\t" : : "m"(buf->__fpregs[0]) :);
  38   LIBC_INLINE_ASM("fsd fs1, %0\n\t" : : "m"(buf->__fpregs[1]) :);
  39   LIBC_INLINE_ASM("fsd fs2, %0\n\t" : : "m"(buf->__fpregs[2]) :);
  40   LIBC_INLINE_ASM("fsd fs3, %0\n\t" : : "m"(buf->__fpregs[3]) :);
  41   LIBC_INLINE_ASM("fsd fs4, %0\n\t" : : "m"(buf->__fpregs[4]) :);
  42   LIBC_INLINE_ASM("fsd fs5, %0\n\t" : : "m"(buf->__fpregs[5]) :);
  43   LIBC_INLINE_ASM("fsd fs6, %0\n\t" : : "m"(buf->__fpregs[6]) :);
  44   LIBC_INLINE_ASM("fsd fs7, %0\n\t" : : "m"(buf->__fpregs[7]) :);
  45   LIBC_INLINE_ASM("fsd fs8, %0\n\t" : : "m"(buf->__fpregs[8]) :);
  46   LIBC_INLINE_ASM("fsd fs9, %0\n\t" : : "m"(buf->__fpregs[9]) :);
  47   LIBC_INLINE_ASM("fsd fs10, %0\n\t" : : "m"(buf->__fpregs[10]) :);
  48   LIBC_INLINE_ASM("fsd fs11, %0\n\t" : : "m"(buf->__fpregs[11]) :);
  49 #elif defined(__riscv_float_abi_single)
  50 #error "setjmp implementation not available for the target architecture."
  51 #endif
  52
  53   return 0;
  54 }
  55
  56 } // namespace __llvm_libc