| /* Copyright (C) 2001-2014 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sysdep.h> |
| #include <jmpbuf-offsets.h> |
| #include <asm-syntax.h> |
| #include <stap-probe.h> |
| |
| /* Jump to the position specified by ENV, causing the |
| setjmp call there to return VAL, or 1 if VAL is 0. |
| void __longjmp (__jmp_buf env, int val). */ |
| .text |
| ENTRY(__longjmp) |
| /* Restore registers. */ |
| mov (JB_RSP*8)(%rdi),%R8_LP |
| mov (JB_RBP*8)(%rdi),%R9_LP |
| mov (JB_PC*8)(%rdi),%RDX_LP |
| #ifdef PTR_DEMANGLE |
| PTR_DEMANGLE (%R8_LP) |
| PTR_DEMANGLE (%R9_LP) |
| PTR_DEMANGLE (%RDX_LP) |
| # ifdef __ILP32__ |
| /* We ignored the high bits of the %rbp value because only the low |
| bits are mangled. But we cannot presume that %rbp is being used |
| as a pointer and truncate it, so recover the high bits. */ |
| movl (JB_RBP*8 + 4)(%rdi), %eax |
| shlq $32, %rax |
| orq %rax, %r9 |
| # endif |
| #endif |
| LIBC_PROBE (longjmp, 3, LP_SIZE@%RDI_LP, -4@%esi, LP_SIZE@%RDX_LP) |
| /* We add unwind information for the target here. */ |
| cfi_def_cfa(%rdi, 0) |
| cfi_register(%rsp,%r8) |
| cfi_register(%rbp,%r9) |
| cfi_register(%rip,%rdx) |
| cfi_offset(%rbx,JB_RBX*8) |
| cfi_offset(%r12,JB_R12*8) |
| cfi_offset(%r13,JB_R13*8) |
| cfi_offset(%r14,JB_R14*8) |
| cfi_offset(%r15,JB_R15*8) |
| movq (JB_RBX*8)(%rdi),%rbx |
| movq (JB_R12*8)(%rdi),%r12 |
| movq (JB_R13*8)(%rdi),%r13 |
| movq (JB_R14*8)(%rdi),%r14 |
| movq (JB_R15*8)(%rdi),%r15 |
| /* Set return value for setjmp. */ |
| mov %esi, %eax |
| mov %R8_LP,%RSP_LP |
| movq %r9,%rbp |
| LIBC_PROBE (longjmp_target, 3, |
| LP_SIZE@%RDI_LP, -4@%eax, LP_SIZE@%RDX_LP) |
| jmpq *%rdx |
| END (__longjmp) |
