projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 88e508f9 | 1 | /* IBM Z support code for TLS offsets. |
| a945c346 | 2 | Copyright (C) 2020-2024 Free Software Foundation, Inc. |
| 88e508f9 RD |
3 | |
| 4 | This file is part of GCC. | |
| 5 | ||
| 6 | GCC is free software; you can redistribute it and/or modify it under | |
| 7 | the terms of the GNU General Public License as published by the Free | |
| 8 | Software Foundation; either version 3, or (at your option) any later | |
| 9 | version. | |
| 10 | ||
| 11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | for more details. | |
| 15 | ||
| 16 | Under Section 7 of GPL version 3, you are granted additional | |
| 17 | permissions described in the GCC Runtime Library Exception, version | |
| 18 | 3.1, as published by the Free Software Foundation. | |
| 19 | ||
| 20 | You should have received a copy of the GNU General Public License and | |
| 21 | a copy of the GCC Runtime Library Exception along with this program; | |
| 22 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 23 | <http://www.gnu.org/licenses/>. */ | |
| 24 | ||
| 25 | /* __tls_get_offset expects the GOT pointer in %r12 and adds | |
| 26 | it to its argument in %r2. In order to get the offset of | |
| 27 | ti, we load it into %r2, subtract the current %r12 from %r2 | |
| 28 | so the addition will result in a nop (%r2 - %r12 + %r12). | |
| 29 | ||
| 30 | Note: This file is shared between systemz and s390 as the | |
| 31 | same file is used in multilib case for s390x and s390. */ | |
| 32 | ||
| 33 | #include "../common/threadasm.S" | |
| 34 | ||
| 35 | .text | |
| 36 | .globl CSYM(__ibmz_get_tls_offset) | |
| 37 | .type CSYM(__ibmz_get_tls_offset), @function | |
| 38 | .align 8 | |
| 39 | CSYM(__ibmz_get_tls_offset): | |
| 40 | .cfi_startproc | |
| 41 | ||
| 42 | #ifdef __s390x__ | |
| 43 | .machinemode zarch | |
| 44 | stmg %r14,%r15,112(%r15) | |
| 45 | .cfi_offset 14, -48 | |
| 46 | .cfi_offset 15, -40 | |
| 47 | aghi %r15,-160 | |
| 48 | .cfi_def_cfa_offset 320 | |
| 49 | sgr %r2,%r12 | |
| 50 | brasl %r14,__tls_get_offset@PLT | |
| 51 | lg %r4,272(%r15) | |
| 52 | lmg %r14,%r15,272(%r15) | |
| 53 | .cfi_restore 15 | |
| 54 | .cfi_restore 14 | |
| 55 | .cfi_def_cfa_offset 160 | |
| 56 | br %r4 | |
| 57 | #else | |
| 58 | .machinemode esa | |
| 59 | stm %r12,%r15,48(%r15) | |
| 60 | .cfi_offset 12, -48 | |
| 61 | .cfi_offset 13, -44 | |
| 62 | .cfi_offset 14, -40 | |
| 63 | .cfi_offset 15, -36 | |
| 64 | ahi %r15,-96 | |
| 65 | .cfi_def_cfa_offset 192 | |
| 66 | larl %r12,_GLOBAL_OFFSET_TABLE_ | |
| 67 | sr %r2,%r12 | |
| 68 | brasl %r14,__tls_get_offset@PLT | |
| 69 | l %r4,152(%r15) | |
| 70 | lm %r12,%r15,144(%r15) | |
| 71 | .cfi_restore 15 | |
| 72 | .cfi_restore 14 | |
| 73 | .cfi_restore 13 | |
| 74 | .cfi_restore 12 | |
| 75 | .cfi_def_cfa_offset 96 | |
| 76 | br %r4 | |
| 77 | #endif | |
| 78 | .cfi_endproc | |
| 79 | .size __ibmz_get_tls_offset, .-__ibmz_get_tls_offset |