From 5b6113d62efabb123db433b14adddd4a5fb6b7ec Mon Sep 17 00:00:00 2001 From: Alistair Francis Date: Mon, 10 Feb 2020 10:36:21 -0800 Subject: RISC-V: Support the 32-bit ABI implementation This patch adds the ABI implementation for 32-bit RISC-V. It contains the Linux-specific and RISC-V architecture code. Reviewed-by: Maciej W. Rozycki --- sysdeps/unix/sysv/linux/riscv/jmp_buf-macros.h | 55 ++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/riscv/jmp_buf-macros.h (limited to 'sysdeps/unix') diff --git a/sysdeps/unix/sysv/linux/riscv/jmp_buf-macros.h b/sysdeps/unix/sysv/linux/riscv/jmp_buf-macros.h new file mode 100644 index 0000000000..234b979a8c --- /dev/null +++ b/sysdeps/unix/sysv/linux/riscv/jmp_buf-macros.h @@ -0,0 +1,55 @@ +/* The jump buffer constants for RISC-V. + Copyright (C) 2020 Free Software Foundation, Inc. + + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +/* Produced by this program: + + #include + #include + #include + #include + + int main (int argc, char **argv) + { + printf ("#define JMP_BUF_SIZE %d\n", sizeof (jmp_buf)); + printf ("#define JMP_BUF_ALIGN %d\n", __alignof__ (jmp_buf)); + printf ("#define SIGJMP_BUF_SIZE %d\n", sizeof (sigjmp_buf)); + printf ("#define SIGJMP_BUF_ALIGN %d\n", __alignof__ (sigjmp_buf)); + printf ("#define MASK_WAS_SAVED_OFFSET %d\n", + offsetof (struct __jmp_buf_tag, __mask_was_saved)); + printf ("#define SAVED_MASK_OFFSET %d\n", + offsetof (struct __jmp_buf_tag, __saved_mask)); + } */ + +#if defined __riscv_float_abi_soft +# define JMP_BUF_SIZE 188 +# define JMP_BUF_ALIGN 4 +# define SIGJMP_BUF_SIZE 188 +# define SIGJMP_BUF_ALIGN 4 +# define MASK_WAS_SAVED_OFFSET 56 +# define SAVED_MASK_OFFSET 60 +#elif defined __riscv_float_abi_double +# define JMP_BUF_SIZE 288 +# define JMP_BUF_ALIGN 8 +# define SIGJMP_BUF_SIZE 288 +# define SIGJMP_BUF_ALIGN 8 +# define MASK_WAS_SAVED_OFFSET 152 +# define SAVED_MASK_OFFSET 156 +#else +# error "Unknown RISC-V floating-point ABI" +#endif -- cgit 1.4.1