| 1 | /* Copyright (C) 1991-2024 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library. If not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #include <sysdep.h> |
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| 19 | #include <errno.h> |
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| 20 | |
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| 21 | #if IS_IN (rtld) |
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| 22 | # include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */ |
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| 23 | #endif |
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| 24 | |
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| 25 | #include <tls.h> |
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| 26 | |
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| 27 | #undef syscall_error |
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| 28 | __syscall_error: |
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| 29 | #if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN |
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| 30 | /* We translate the system's EWOULDBLOCK error into EAGAIN. |
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| 31 | The GNU C library always defines EWOULDBLOCK==EAGAIN. |
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| 32 | EWOULDBLOCK_sys is the original number. */ |
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| 33 | cmp r0, $EWOULDBLOCK_sys /* Is it the old EWOULDBLOCK? */ |
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| 34 | it eq |
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| 35 | moveq r0, $EAGAIN /* Yes; translate it to EAGAIN. */ |
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| 36 | #endif |
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| 37 | |
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| 38 | #if !IS_IN (rtld) |
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| 39 | mov r1, r0 |
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| 40 | GET_TLS (r2) |
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| 41 | ldr r2, 1f |
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| 42 | #ifdef __thumb__ |
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| 43 | 2: add r2, r2, pc |
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| 44 | ldr r2, [r2] |
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| 45 | #else |
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| 46 | 2: ldr r2, [pc, r2] |
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| 47 | #endif |
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| 48 | str r1, [r0, r2] |
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| 49 | mvn r0, #0 |
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| 50 | DO_RET(lr) |
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| 51 | |
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| 52 | 1: .word errno(gottpoff) + (. - 2b - PC_OFS) |
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| 53 | #elif RTLD_PRIVATE_ERRNO |
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| 54 | LDST_PCREL(str, r0, r1, C_SYMBOL_NAME(rtld_errno)) |
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| 55 | mvn r0, #0 |
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| 56 | DO_RET(r14) |
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| 57 | #else |
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| 58 | #error "Unsupported non-TLS case" |
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| 59 | #endif |
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| 60 | |
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| 61 | #undef __syscall_error |
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| 62 | END (__syscall_error) |
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| 63 | |
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