projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 04277e02 | 1 | /* Copyright (C) 1997-2019 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 | |
| 15 | License along with the GNU C Library. If not, see | |
| 5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
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17 | |
| 18 | #include <stdarg.h> | |
| 19 | #include <sysdep.h> | |
| 20 | #include <errno.h> | |
| 21 | ||
| 22 | /* HPPA implements syscall() in 'C'; the assembler version would | |
| 23 | typically be in syscall.S. Also note that we have INLINE_SYSCALL, | |
| 24 | INTERNAL_SYSCALL, and all the generated pure assembly syscall wrappers. | |
| 25 | How often the function is used is unknown. */ | |
| 26 | ||
| 27 | long int | |
| 28 | syscall (long int __sysno, ...) | |
| 29 | { | |
| 30 | /* FIXME: Keep this matching INLINE_SYSCALL for hppa */ | |
| 31 | va_list args; | |
| 32 | long int arg0, arg1, arg2, arg3, arg4, arg5; | |
| 33 | long int __sys_res; | |
| 34 | ||
| 35 | /* Load varargs */ | |
| 36 | va_start (args, __sysno); | |
| 37 | arg0 = va_arg (args, long int); | |
| 38 | arg1 = va_arg (args, long int); | |
| 39 | arg2 = va_arg (args, long int); | |
| 40 | arg3 = va_arg (args, long int); | |
| 41 | arg4 = va_arg (args, long int); | |
| 42 | arg5 = va_arg (args, long int); | |
| 43 | va_end (args); | |
| 44 | ||
| 45 | { | |
| 04ece7d2 | 46 | LOAD_ARGS_6 (arg0, arg1, arg2, arg3, arg4, arg5) |
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47 | register unsigned long int __res asm("r28"); |
| 48 | PIC_REG_DEF | |
| 04ece7d2 | 49 | LOAD_REGS_6 |
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50 | asm volatile (SAVE_ASM_PIC |
| 51 | " ble 0x100(%%sr2, %%r0) \n" | |
| 52 | " copy %1, %%r20 \n" | |
| 53 | LOAD_ASM_PIC | |
| 54 | : "=r" (__res) | |
| 55 | : "r" (__sysno) PIC_REG_USE ASM_ARGS_6 | |
| 56 | : "memory", CALL_CLOB_REGS CLOB_ARGS_6); | |
| 57 | __sys_res = __res; | |
| 58 | } | |
| 59 | if ((unsigned long int) __sys_res >= (unsigned long int) -4095) | |
| 60 | { | |
| 61 | __set_errno (-__sys_res); | |
| 62 | __sys_res = -1; | |
| 63 | } | |
| 64 | return __sys_res; | |
| 65 | } |