1 2 /*---------------------------------------------------------------*/ 3 /*--- begin libvex_emwarn.h ---*/ 4 /*---------------------------------------------------------------*/ 5 6 /* 7 This file is part of Valgrind, a dynamic binary instrumentation 8 framework. 9 10 Copyright (C) 2004-2010 OpenWorks LLP 11 info (at) open-works.net 12 13 This program is free software; you can redistribute it and/or 14 modify it under the terms of the GNU General Public License as 15 published by the Free Software Foundation; either version 2 of the 16 License, or (at your option) any later version. 17 18 This program is distributed in the hope that it will be useful, but 19 WITHOUT ANY WARRANTY; without even the implied warranty of 20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 21 General Public License for more details. 22 23 You should have received a copy of the GNU General Public License 24 along with this program; if not, write to the Free Software 25 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 26 02110-1301, USA. 27 28 The GNU General Public License is contained in the file COPYING. 29 30 Neither the names of the U.S. Department of Energy nor the 31 University of California nor the names of its contributors may be 32 used to endorse or promote products derived from this software 33 without prior written permission. 34 */ 35 36 #ifndef __LIBVEX_EMWARN_H 37 #define __LIBVEX_EMWARN_H 38 39 40 /* VEX can sometimes generate code which returns to the dispatcher 41 with the guest state pointer set to VEX_TRC_JMP_EMWARN. This means 42 that VEX is trying to warn Valgrind that it is doing imprecise 43 emulation in some sense. The guest's pseudo-register 44 "guest_EMWARN" will hold a value of type VexEmWarn, which describes 45 the nature of the warning. Currently the limitations that are 46 warned about apply primarily to floating point support. 47 48 All guest states should have a 32-bit (UInt) guest_EMWARN pseudo- 49 register, that emulation warnings can be written in to. 50 51 Note that guest_EMWARN only carries a valid value at the jump 52 marked as VEX_TRC_JMP_EMWARN. You can't assume it will continue to 53 carry a valid value from any amount of time after the jump. 54 */ 55 56 typedef 57 enum { 58 /* no warning indicated */ 59 EmWarn_NONE=0, 60 61 /* unmasking x87 FP exceptions is not supported */ 62 EmWarn_X86_x87exns, 63 64 /* change of x87 FP precision away from 64-bit (mantissa) */ 65 EmWarn_X86_x87precision, 66 67 /* unmasking SSE FP exceptions is not supported */ 68 EmWarn_X86_sseExns, 69 70 /* setting mxcsr.fz is not supported */ 71 EmWarn_X86_fz, 72 73 /* setting mxcsr.daz is not supported */ 74 EmWarn_X86_daz, 75 76 /* settings to %eflags.ac (alignment check) are noted but ignored */ 77 EmWarn_X86_acFlag, 78 79 /* unmasking PPC32/64 FP exceptions is not supported */ 80 EmWarn_PPCexns, 81 82 /* overflow/underflow of the PPC64 _REDIR stack (ppc64 only) */ 83 EmWarn_PPC64_redir_overflow, 84 EmWarn_PPC64_redir_underflow, 85 86 EmWarn_NUMBER 87 } 88 VexEmWarn; 89 90 91 /* Produces a short string describing the warning. */ 92 extern HChar* LibVEX_EmWarn_string ( VexEmWarn ); 93 94 95 #endif /* ndef __LIBVEX_EMWARN_H */ 96 97 /*---------------------------------------------------------------*/ 98 /*--- libvex_emwarn.h ---*/ 99 /*---------------------------------------------------------------*/ 100
