projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f7a9f785 | 1 | /* Copyright (C) 2001-2016 Free Software Foundation, Inc. |
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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 | |
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15 | License along with the GNU C Library. If not, see |
| 16 | <http://www.gnu.org/licenses/>. */ | |
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17 | |
| 18 | #include <sysdep.h> | |
| 19 | ||
| 20 | #include <sys/asm.h> | |
| 21 | ||
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22 | /* Usage: |
| 23 | long syscall (syscall_number, arg1, arg2, arg3, arg4, arg5, arg6, arg7) | |
| be122291 | 24 | |
| ea78d8fa | 25 | We need to do some arg shifting, syscall_number will be in v0. */ |
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26 | |
| 27 | ||
| 28 | .text | |
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29 | NESTED (syscall, SZREG, ra) |
| 30 | .mask 0x00010000, -SZREG | |
| 31 | .fmask 0x00000000, 0 | |
| 32 | PTR_ADDIU sp, -SZREG | |
| aea7a9b9 | 33 | cfi_adjust_cfa_offset (SZREG) |
| ea78d8fa | 34 | REG_S s0, (sp) |
| aea7a9b9 | 35 | cfi_rel_offset (s0, 0) |
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36 | |
| 37 | move s0, a0 | |
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38 | move a0, a1 /* shift arg1 - arg7. */ |
| 39 | move a1, a2 | |
| 40 | move a2, a3 | |
| 41 | move a3, a4 | |
| 42 | move a4, a5 | |
| 43 | move a5, a6 | |
| 44 | move a6, a7 | |
| 45 | ||
| ea78d8fa | 46 | move v0, s0 /* Syscall number -> v0 */ |
| be122291 | 47 | syscall /* Do the system call. */ |
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48 | |
| 49 | REG_L s0, (sp) | |
| aea7a9b9 | 50 | cfi_restore (s0) |
| ea78d8fa | 51 | PTR_ADDIU sp, SZREG |
| aea7a9b9 | 52 | cfi_adjust_cfa_offset (-SZREG) |
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53 | bne a3, zero, L(error) |
| 54 | ||
| 55 | ret | |
| 56 | ||
| 57 | L(error): | |
| aea7a9b9 | 58 | SETUP_GP64_REG (a0, syscall) |
| ea78d8fa | 59 | PTR_LA t9, __syscall_error |
| aea7a9b9 | 60 | RESTORE_GP64_REG |
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61 | jr t9 |
| 62 | ||
| ea78d8fa | 63 | END (syscall) |