diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/aarch64/setjmp.S | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/lib/aarch64/setjmp.S b/lib/aarch64/setjmp.S index 9060cb756..9d9eb49ba 100644 --- a/lib/aarch64/setjmp.S +++ b/lib/aarch64/setjmp.S @@ -1,5 +1,5 @@ /* - * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ @@ -12,10 +12,7 @@ .globl longjmp /* - * int setjmp(struct jmpbuf *buf); - * - * Sets a jump point in the buffer specified in x0. Returns 0 to the caller when - * when setting up the jump, and 1 when returning from the jump. + * int setjmp(jmp_buf env); */ func setjmp mov x7, sp @@ -34,9 +31,7 @@ endfunc setjmp /* - * void longjmp(struct jmpbuf *buf); - * - * Return to a jump point setup by setjmp() + * void longjmp(jmp_buf env, int val); */ func longjmp ldp x7, xzr, [x0, #JMP_CTX_SP] @@ -60,6 +55,7 @@ func longjmp mov sp, x7 - mov x0, #1 + ands x0, x1, x1 /* Move val to x0 and set flags */ + cinc x0, x0, eq /* If val is 0, return 1 */ ret endfunc longjmp |