| 1 | /* Copyright (C) 1992-2024 Free Software Foundation, Inc. |
|---|
| 2 | This file is part of the GNU C Library. |
|---|
| 3 | |
|---|
| 4 | The GNU C Library is free software; you can redistribute it and/or |
|---|
| 5 | modify it under the terms of the GNU Lesser General Public |
|---|
| 6 | License as published by the Free Software Foundation; either |
|---|
| 7 | version 2.1 of the License, or (at your option) any later version. |
|---|
| 8 | |
|---|
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
|---|
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|---|
| 12 | Lesser General Public License for more details. |
|---|
| 13 | |
|---|
| 14 | You should have received a copy of the GNU Lesser General Public |
|---|
| 15 | License along with the GNU C Library. If not, see |
|---|
| 16 | <https://www.gnu.org/licenses/>. */ |
|---|
| 17 | |
|---|
| 18 | #include <sysdep.h> |
|---|
| 19 | #include <errno.h> |
|---|
| 20 | #include <sys/asm.h> |
|---|
| 21 | |
|---|
| 22 | .set nomips16 |
|---|
| 23 | |
|---|
| 24 | #ifdef _LIBC_REENTRANT |
|---|
| 25 | |
|---|
| 26 | LOCALSZ= 3 |
|---|
| 27 | FRAMESZ= (((NARGSAVE+LOCALSZ)*SZREG)+ALSZ)&ALMASK |
|---|
| 28 | RAOFF= FRAMESZ-(1*SZREG) |
|---|
| 29 | GPOFF= FRAMESZ-(2*SZREG) |
|---|
| 30 | V0OFF= FRAMESZ-(3*SZREG) |
|---|
| 31 | |
|---|
| 32 | ENTRY(__syscall_error) |
|---|
| 33 | #ifdef __PIC__ |
|---|
| 34 | .set noat |
|---|
| 35 | SETUP_GPX (AT) |
|---|
| 36 | .set at |
|---|
| 37 | #endif |
|---|
| 38 | PTR_SUBU sp, FRAMESZ |
|---|
| 39 | .set noat |
|---|
| 40 | SETUP_GPX64(GPOFF,AT) |
|---|
| 41 | .set at |
|---|
| 42 | #ifdef __PIC__ |
|---|
| 43 | SAVE_GP(GPOFF) |
|---|
| 44 | #endif |
|---|
| 45 | REG_S v0, V0OFF(sp) |
|---|
| 46 | REG_S ra, RAOFF(sp) |
|---|
| 47 | |
|---|
| 48 | #if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN |
|---|
| 49 | /* We translate the system's EWOULDBLOCK error into EAGAIN. |
|---|
| 50 | The GNU C library always defines EWOULDBLOCK==EAGAIN. |
|---|
| 51 | EWOULDBLOCK_sys is the original number. */ |
|---|
| 52 | bne v0, EWOULDBLOCK_sys, L(skip) |
|---|
| 53 | nop |
|---|
| 54 | li v0, EAGAIN |
|---|
| 55 | L(skip): |
|---|
| 56 | #endif |
|---|
| 57 | /* Find our per-thread errno address */ |
|---|
| 58 | jal __errno_location |
|---|
| 59 | |
|---|
| 60 | /* Store the error value. */ |
|---|
| 61 | REG_L t0, V0OFF(sp) |
|---|
| 62 | sw t0, 0(v0) |
|---|
| 63 | |
|---|
| 64 | /* And just kick back a -1. */ |
|---|
| 65 | REG_L ra, RAOFF(sp) |
|---|
| 66 | RESTORE_GP64 |
|---|
| 67 | PTR_ADDU sp, FRAMESZ |
|---|
| 68 | li v0, -1 |
|---|
| 69 | j ra |
|---|
| 70 | END(__syscall_error) |
|---|
| 71 | |
|---|
| 72 | #else /* _LIBC_REENTRANT */ |
|---|
| 73 | |
|---|
| 74 | |
|---|
| 75 | ENTRY(__syscall_error) |
|---|
| 76 | #ifdef __PIC__ |
|---|
| 77 | SETUP_GPX (AT) |
|---|
| 78 | #endif |
|---|
| 79 | SETUP_GPX64 (t9, AT) |
|---|
| 80 | |
|---|
| 81 | #if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN |
|---|
| 82 | /* We translate the system's EWOULDBLOCK error into EAGAIN. |
|---|
| 83 | The GNU C library always defines EWOULDBLOCK==EAGAIN. |
|---|
| 84 | EWOULDBLOCK_sys is the original number. */ |
|---|
| 85 | bne v0, EWOULDBLOCK_sys, L(skip) |
|---|
| 86 | li v0, EAGAIN |
|---|
| 87 | L(skip): |
|---|
| 88 | #endif |
|---|
| 89 | /* Store it in errno... */ |
|---|
| 90 | sw v0, errno |
|---|
| 91 | |
|---|
| 92 | /* And just kick back a -1. */ |
|---|
| 93 | li v0, -1 |
|---|
| 94 | |
|---|
| 95 | RESTORE_GP64 |
|---|
| 96 | j ra |
|---|
| 97 | END(__syscall_error) |
|---|
| 98 | #endif /* _LIBC_REENTRANT */ |
|---|
| 99 | |
|---|
