| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2004-2007 Atmel Corporation |
| 3 | * |
| 4 | * This file is subject to the terms and conditions of the GNU Lesser General |
| 5 | * Public License. See the file "COPYING.LIB" in the main directory of this |
| 6 | * archive for more details. |
| 7 | */ |
| 8 | #include <features.h> |
| 9 | |
| 10 | .text |
| 11 | |
| 12 | /* |
| 13 | * long int syscall(long int sysno, ...) |
| 14 | */ |
| 15 | .global syscall |
| 16 | .type syscall, @function |
| 17 | .align 2 |
| 18 | syscall: |
| 19 | stm --sp, r3,r5,r6,lr |
| 20 | sub lr, sp, -16 |
| 21 | mov r8, r12 |
| 22 | ldm lr, r3,r5,r9-r12 |
| 23 | scall |
| 24 | cp.w r12, -4095 |
| 25 | brlo .Ldone |
| 26 | |
| 27 | #ifdef __PIC__ |
| 28 | lddpc r6, .Lgot |
| 29 | .Lgotcalc: |
| 30 | rsub r6, pc |
| 31 | # ifdef __UCLIBC_HAS_THREADS__ |
| 32 | rsub r3, r12, 0 |
| 33 | mcall r6[__errno_location@got] |
| 34 | st.w r12[0], r3 |
| 35 | # else |
| 36 | ld.w r3, r6[errno@got] |
| 37 | neg r12 |
| 38 | st.w r3[0], r12 |
| 39 | # endif |
| 40 | #else |
| 41 | # ifdef __UCLIBC_HAS_THREADS__ |
| 42 | rsub r3, r12, 0 |
| 43 | mcall .Lerrno_location |
| 44 | st.w r12[0], r3 |
| 45 | # else |
| 46 | lddpc r3, .Lerrno |
| 47 | neg r12 |
| 48 | st.w r3[0], r12 |
| 49 | # endif |
| 50 | #endif |
| 51 | mov r12, -1 |
| 52 | |
| 53 | .Ldone: |
| 54 | ldm sp++, r3,r5,r6,pc |
| 55 | |
| 56 | .align 2 |
| 57 | #ifdef __PIC__ |
| 58 | .Lgot: |
| 59 | .long .Lgotcalc - _GLOBAL_OFFSET_TABLE_ |
| 60 | #else |
| 61 | # ifdef __UCLIBC_HAS_THREADS__ |
| 62 | .Lerrno_location: |
| 63 | .long __errno_location |
| 64 | # else |
| 65 | .Lerrno: |
| 66 | .long errno |
| 67 | # endif |
| 68 | #endif |
| 69 | |
| 70 | |
| 71 | .size syscall, . - syscall |