| /* IBM Z support code for TLS offsets. |
| Copyright (C) 2020-2021 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC 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, or (at your option) any later |
| version. |
| |
| GCC 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. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* __tls_get_offset expects the GOT pointer in %r12 and adds |
| it to its argument in %r2. In order to get the offset of |
| ti, we load it into %r2, subtract the current %r12 from %r2 |
| so the addition will result in a nop (%r2 - %r12 + %r12). |
| |
| Note: This file is shared between systemz and s390 as the |
| same file is used in multilib case for s390x and s390. */ |
| |
| #include "../common/threadasm.S" |
| |
| .text |
| .globl CSYM(__ibmz_get_tls_offset) |
| .type CSYM(__ibmz_get_tls_offset), @function |
| .align 8 |
| CSYM(__ibmz_get_tls_offset): |
| .cfi_startproc |
| |
| #ifdef __s390x__ |
| .machinemode zarch |
| stmg %r14,%r15,112(%r15) |
| .cfi_offset 14, -48 |
| .cfi_offset 15, -40 |
| aghi %r15,-160 |
| .cfi_def_cfa_offset 320 |
| sgr %r2,%r12 |
| brasl %r14,__tls_get_offset@PLT |
| lg %r4,272(%r15) |
| lmg %r14,%r15,272(%r15) |
| .cfi_restore 15 |
| .cfi_restore 14 |
| .cfi_def_cfa_offset 160 |
| br %r4 |
| #else |
| .machinemode esa |
| stm %r12,%r15,48(%r15) |
| .cfi_offset 12, -48 |
| .cfi_offset 13, -44 |
| .cfi_offset 14, -40 |
| .cfi_offset 15, -36 |
| ahi %r15,-96 |
| .cfi_def_cfa_offset 192 |
| larl %r12,_GLOBAL_OFFSET_TABLE_ |
| sr %r2,%r12 |
| brasl %r14,__tls_get_offset@PLT |
| l %r4,152(%r15) |
| lm %r12,%r15,144(%r15) |
| .cfi_restore 15 |
| .cfi_restore 14 |
| .cfi_restore 13 |
| .cfi_restore 12 |
| .cfi_def_cfa_offset 96 |
| br %r4 |
| #endif |
| .cfi_endproc |
| .size __ibmz_get_tls_offset, .-__ibmz_get_tls_offset |
