1 /* libunwind - a platform-independent unwind library 2 Copyright (C) 2003-2004 Hewlett-Packard Co 3 Contributed by David Mosberger-Tang <davidm (at) hpl.hp.com> 4 5 This file is part of libunwind. 6 7 Permission is hereby granted, free of charge, to any person obtaining 8 a copy of this software and associated documentation files (the 9 "Software"), to deal in the Software without restriction, including 10 without limitation the rights to use, copy, modify, merge, publish, 11 distribute, sublicense, and/or sell copies of the Software, and to 12 permit persons to whom the Software is furnished to do so, subject to 13 the following conditions: 14 15 The above copyright notice and this permission notice shall be 16 included in all copies or substantial portions of the Software. 17 18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 21 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ 25 26 #define SIG_SETMASK 2 27 28 .global _UI_siglongjmp_cont 29 .global sigprocmask 30 31 .align 32 32 .proc siglongjmp_continuation 33 siglongjmp_continuation: 34 _UI_siglongjmp_cont: // non-function label for siglongjmp.c 35 .prologue 36 .save rp, r15 37 .body 38 nop 0 39 nop 0 40 br.call.sptk.many b6 = .next 41 ;; 42 .prologue 43 .save ar.pfs, r33 44 .next: alloc loc1 = ar.pfs, 0, 3, 3, 0 45 /* 46 * Note: we can use the scratch stack are because the caller 47 * of sigsetjmp() by definition is not a leaf-procedure. 48 */ 49 st8 [sp] = r17 // store signal mask 50 .save rp, loc0 51 mov loc0 = r15 // final continuation point 52 ;; 53 .body 54 mov loc2 = r16 // value to return in r8 55 56 mov out0 = SIG_SETMASK 57 mov out1 = sp 58 mov out2 = r0 59 br.call.sptk.many rp = sigprocmask 60 ;; 61 mov rp = loc0 62 mov ar.pfs = loc1 63 mov r8 = loc2 64 br.ret.sptk.many rp 65 .endp siglongjmp_continuation 66 #ifdef __linux__ 67 /* We do not need executable stack. */ 68 .section .note.GNU-stack,"",@progbits 69 #endif 70
