projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| b112c02f | 1 | /* Copyright (C) 1998 Free Software Foundation, Inc. |
| 0b833ff4 RH |
2 | This file is part of the GNU C Library. |
| 3 | Contributed by Richard Henderson <rth@cygnus.com>, 1998 | |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 0b833ff4 RH |
9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 41bdb6e2 | 13 | Lesser General Public License for more details. |
| 0b833ff4 | 14 | |
| 41bdb6e2 AJ |
15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, write to the Free | |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 18 | 02111-1307 USA. */ | |
| b112c02f | 19 | |
| 0b833ff4 | 20 | #include <sysdep.h> |
| b112c02f | 21 | |
| 0b833ff4 RH |
22 | /* On Alpha we desparately want to avoid having to issue an imb. Ordinarily |
| 23 | the kernel would have to issue one after setting up the signal return | |
| 24 | stack, but the Linux rt_sigaction syscall is prepared to accept a pointer | |
| b112c02f UD |
25 | to the sigreturn syscall, instead of inlining it on the stack. |
| 26 | ||
| 0b833ff4 | 27 | This just about halves signal delivery time. */ |
| b112c02f UD |
28 | |
| 29 | #ifdef __NR_rt_sigaction | |
| 0b833ff4 RH |
30 | .text |
| 31 | ENTRY(__syscall_rt_sigaction) | |
| 32 | .frame sp,0,ra,0 | |
| 33 | #ifdef PROF | |
| 34 | ldgp gp,0(pv) | |
| 35 | .set noat | |
| 36 | lda AT, _mcount | |
| 37 | jsr AT, (AT), _mcount | |
| 38 | .set at | |
| 39 | #endif | |
| ba3904fd RH |
40 | /* Indicate non-standard use of our PV. */ |
| 41 | .prologue 2 | |
| b112c02f | 42 | |
| 0b833ff4 | 43 | beq a1, 0f |
| 823bc652 | 44 | ldl t0, 8(a1) # sa_flags |
| 0b833ff4 RH |
45 | lda a4, sigreturn-__syscall_rt_sigaction(pv) |
| 46 | lda t1, rt_sigreturn-__syscall_rt_sigaction(pv) | |
| 47 | and t0, 0x00000040, t0 # SA_SIGINFO | |
| 48 | cmovne t0, t1, a4 | |
| 823bc652 | 49 | 0: ldi v0,__NR_rt_sigaction |
| b112c02f | 50 | callsys |
| 0b833ff4 RH |
51 | bne a3,1f |
| 52 | ret | |
| b112c02f | 53 | |
| 823bc652 RH |
54 | 1: |
| 55 | #ifndef PROF | |
| 56 | br gp,2f | |
| 0b833ff4 | 57 | 2: ldgp gp,0(gp) |
| 823bc652 | 58 | #endif |
| 0b833ff4 RH |
59 | jmp __syscall_error |
| 60 | ||
| 61 | END(__syscall_rt_sigaction) | |
| 62 | ||
| 63 | .align 5 | |
| 64 | .ent sigreturn | |
| 65 | sigreturn: | |
| 66 | .prologue 0 | |
| 67 | mov sp,a0 | |
| 68 | ldi v0,__NR_sigreturn | |
| 69 | callsys | |
| 70 | .end sigreturn | |
| 71 | ||
| 72 | .align 4 | |
| 73 | .ent rt_sigreturn | |
| 74 | rt_sigreturn: | |
| 75 | .prologue 0 | |
| 76 | mov sp,a0 | |
| 77 | ldi v0,__NR_rt_sigreturn | |
| 78 | callsys | |
| 79 | .end rt_sigreturn | |
| b112c02f UD |
80 | #else |
| 81 | ENTRY(__syscall_rt_sigaction) | |
| 82 | ldgp $29,0($27) | |
| ba3904fd | 83 | .prologue 1 |
| b112c02f UD |
84 | ldi $0,ENOSYS |
| 85 | jmp __syscall_error | |
| 86 | END(__syscall_rt_sigaction) | |
| 87 | #endif |