RISC-V: Add setjmp implementation
This patch adds a 32/64 capable setjmp implementation for RISC-V. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Alexander Graf
Vincent Batts
parent
483be6643f
commit
745da2e57b
|
|
@ -0,0 +1,84 @@
|
|||
/*
|
||||
* GRUB -- GRand Unified Bootloader
|
||||
* Copyright (C) 2018 Free Software Foundation, Inc.
|
||||
*
|
||||
* GRUB is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* GRUB 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 General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include <grub/symbol.h>
|
||||
#include <grub/dl.h>
|
||||
|
||||
.file "setjmp.S"
|
||||
|
||||
GRUB_MOD_LICENSE "GPLv3+"
|
||||
|
||||
.text
|
||||
|
||||
#if __riscv_xlen == 64
|
||||
#define STORE_IDX(reg, idx) sd reg, (idx*8)(a0)
|
||||
#define LOAD_IDX(reg, idx) ld reg, (idx*8)(a0)
|
||||
#else
|
||||
#define STORE_IDX(reg, idx) sw reg, (idx*4)(a0)
|
||||
#define LOAD_IDX(reg, idx) lw reg, (idx*4)(a0)
|
||||
#endif
|
||||
|
||||
/*
|
||||
* int grub_setjmp (grub_jmp_buf env)
|
||||
*/
|
||||
FUNCTION(grub_setjmp)
|
||||
/* Preserve all callee-saved registers and the SP */
|
||||
STORE_IDX(s0, 0)
|
||||
STORE_IDX(s1, 1)
|
||||
STORE_IDX(s2, 2)
|
||||
STORE_IDX(s3, 3)
|
||||
STORE_IDX(s4, 4)
|
||||
STORE_IDX(s5, 5)
|
||||
STORE_IDX(s6, 6)
|
||||
STORE_IDX(s7, 7)
|
||||
STORE_IDX(s8, 8)
|
||||
STORE_IDX(s9, 9)
|
||||
STORE_IDX(s10, 10)
|
||||
STORE_IDX(s11, 11)
|
||||
STORE_IDX(ra, 12)
|
||||
STORE_IDX(sp, 13)
|
||||
li a0, 0
|
||||
ret
|
||||
|
||||
/*
|
||||
* int grub_longjmp (grub_jmp_buf env, int val)
|
||||
*/
|
||||
FUNCTION(grub_longjmp)
|
||||
LOAD_IDX(s0, 0)
|
||||
LOAD_IDX(s1, 1)
|
||||
LOAD_IDX(s2, 2)
|
||||
LOAD_IDX(s3, 3)
|
||||
LOAD_IDX(s4, 4)
|
||||
LOAD_IDX(s5, 5)
|
||||
LOAD_IDX(s6, 6)
|
||||
LOAD_IDX(s7, 7)
|
||||
LOAD_IDX(s8, 8)
|
||||
LOAD_IDX(s9, 9)
|
||||
LOAD_IDX(s10, 10)
|
||||
LOAD_IDX(s11, 11)
|
||||
LOAD_IDX(ra, 12)
|
||||
LOAD_IDX(sp, 13)
|
||||
|
||||
/* Move the return value in place, but return 1 if passed 0. */
|
||||
beq a1, zero, longjmp_1
|
||||
mv a0, a1
|
||||
ret
|
||||
|
||||
longjmp_1:
|
||||
li a0, 1
|
||||
ret
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
/*
|
||||
* GRUB -- GRand Unified Bootloader
|
||||
* Copyright (C) 2018 Free Software Foundation, Inc.
|
||||
*
|
||||
* GRUB is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* GRUB 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 General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifndef GRUB_SETJMP_CPU_HEADER
|
||||
#define GRUB_SETJMP_CPU_HEADER 1
|
||||
|
||||
typedef unsigned long long grub_jmp_buf[14];
|
||||
|
||||
int grub_setjmp (grub_jmp_buf env) RETURNS_TWICE;
|
||||
void grub_longjmp (grub_jmp_buf env, int val) __attribute__ ((noreturn));
|
||||
|
||||
#endif /* ! GRUB_SETJMP_CPU_HEADER */
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
/*
|
||||
* GRUB -- GRand Unified Bootloader
|
||||
* Copyright (C) 2018 Free Software Foundation, Inc.
|
||||
*
|
||||
* GRUB is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* GRUB 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 General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifndef GRUB_SETJMP_CPU_HEADER
|
||||
#define GRUB_SETJMP_CPU_HEADER 1
|
||||
|
||||
typedef unsigned long long grub_jmp_buf[14];
|
||||
|
||||
int grub_setjmp (grub_jmp_buf env) RETURNS_TWICE;
|
||||
void grub_longjmp (grub_jmp_buf env, int val) __attribute__ ((noreturn));
|
||||
|
||||
#endif /* ! GRUB_SETJMP_CPU_HEADER */
|
||||
Loading…
Reference in New Issue