| 1 | /* Copyright (C) 2001-2024 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 <tls.h> |
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| 20 | |
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| 21 | |
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| 22 | /* The following code is only used in the shared library when we |
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| 23 | compile the reentrant version. Otherwise each system call defines |
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| 24 | each own version. */ |
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| 25 | |
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| 26 | /* The syscall stubs jump here when they detect an error. */ |
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| 27 | |
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| 28 | #undef CALL_MCOUNT |
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| 29 | #define CALL_MCOUNT |
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| 30 | |
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| 31 | .text |
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| 32 | ENTRY(__syscall_error) |
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| 33 | #ifndef PIC |
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| 34 | # if IS_IN (libc) |
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| 35 | # define SYSCALL_ERROR_ERRNO __libc_errno |
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| 36 | # else |
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| 37 | # define SYSCALL_ERROR_ERRNO errno |
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| 38 | # endif |
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| 39 | basr %r1,0 |
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| 40 | 0: lg %r1,1f-0b(%r1) |
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| 41 | ear %r3,%a0 |
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| 42 | sllg %r3,%r3,32 |
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| 43 | ear %r3,%a1 |
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| 44 | lcr %r2,%r2 |
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| 45 | st %r2,0(%r1,%r3) |
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| 46 | lghi %r2,-1 |
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| 47 | br %r14 |
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| 48 | 1: .quad SYSCALL_ERROR_ERRNO@ntpoff |
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| 49 | #else |
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| 50 | # if RTLD_PRIVATE_ERRNO |
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| 51 | larl %r1,rtld_errno |
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| 52 | lcr %r2,%r2 |
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| 53 | st %r2,0(%r1) |
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| 54 | lghi %r2,-1 |
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| 55 | br %r14 |
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| 56 | # else |
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| 57 | # if IS_IN (libc) |
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| 58 | # define SYSCALL_ERROR_ERRNO __libc_errno |
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| 59 | # else |
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| 60 | # define SYSCALL_ERROR_ERRNO errno |
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| 61 | # endif |
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| 62 | larl %r1,_GLOBAL_OFFSET_TABLE_ |
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| 63 | lg %r1,SYSCALL_ERROR_ERRNO@gotntpoff(%r1) |
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| 64 | ear %r3,%a0 |
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| 65 | sllg %r3,%r3,32 |
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| 66 | ear %r3,%a1 |
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| 67 | lcr %r2,%r2 |
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| 68 | st %r2,0(%r1,%r3) |
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| 69 | lghi %r2,-1 |
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| 70 | br %r14 |
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| 71 | # endif |
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| 72 | #endif |
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| 73 | |
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| 74 | END (__syscall_error) |
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| 75 | |
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