1 2 /*---------------------------------------------------------------*/ 3 /*--- begin libvex_emnote.h ---*/ 4 /*---------------------------------------------------------------*/ 5 6 /* 7 This file is part of Valgrind, a dynamic binary instrumentation 8 framework. 9 10 Copyright (C) 2004-2015 OpenWorks LLP 11 info@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_EMNOTE_H 37 #define __LIBVEX_EMNOTE_H 38 39 #include "libvex_basictypes.h" 40 41 /* VEX can sometimes generate code which returns to the dispatcher 42 with the guest state pointer set to VEX_TRC_JMP_EMWARN or 43 VEX_TRC_JMP_EMFAIL. This means that VEX is trying to tell Valgrind 44 something noteworthy about emulation progress. For example, that Valgrind 45 is doing imprecise emulation in some sense. The guest's pseudo-register 46 "guest_EMNOTE" will hold a value of type VexEmNote, which describes 47 the nature of the warning. Currently the limitations that are 48 warned about apply primarily to floating point support. 49 50 All guest states must have a 32-bit (UInt) guest_EMNOTE pseudo- 51 register, that emulation warnings can be written in to. 52 53 Note that guest_EMNOTE only carries a valid value at the jump 54 marked as VEX_TRC_JMP_EMWARN / VEX_TRC_JMP_EMFAIL. You can't assume 55 it will continue to carry a valid value from any amount of time after 56 the jump. 57 */ 58 59 typedef 60 enum { 61 /* no note indicated */ 62 EmNote_NONE=0, 63 64 /* unmasking x87 FP exceptions is not supported */ 65 EmWarn_X86_x87exns, 66 67 /* change of x87 FP precision away from 64-bit (mantissa) */ 68 EmWarn_X86_x87precision, 69 70 /* unmasking SSE FP exceptions is not supported */ 71 EmWarn_X86_sseExns, 72 73 /* setting mxcsr.fz is not supported */ 74 EmWarn_X86_fz, 75 76 /* setting mxcsr.daz is not supported */ 77 EmWarn_X86_daz, 78 79 /* settings to %eflags.ac (alignment check) are noted but ignored */ 80 EmWarn_X86_acFlag, 81 82 /* unmasking PPC32/64 FP exceptions is not supported */ 83 EmWarn_PPCexns, 84 85 /* overflow/underflow of the PPC64 _REDIR stack (ppc64 only) */ 86 EmWarn_PPC64_redir_overflow, 87 EmWarn_PPC64_redir_underflow, 88 89 /* insn specifies a rounding mode other than "according to FPC" 90 which requires the floating point extension facility. But that 91 facility is not available on this host */ 92 EmWarn_S390X_fpext_rounding, 93 94 /* insn (e.g. srnmb) specifies an invalid rounding mode */ 95 EmWarn_S390X_invalid_rounding, 96 97 /* stfle insn is not supported on this host */ 98 EmFail_S390X_stfle, 99 100 /* stckf insn is not supported on this host */ 101 EmFail_S390X_stckf, 102 103 /* ecag insn is not supported on this host */ 104 EmFail_S390X_ecag, 105 106 /* pfpo insn is not supported on this host */ 107 EmFail_S390X_pfpo, 108 109 /* DFP insns are not supported on this host */ 110 EmFail_S390X_DFP_insn, 111 112 /* insn needs floating point extension facility which is not 113 available on this host */ 114 EmFail_S390X_fpext, 115 116 /* GPR 0 contains invalid rounding mode for PFPO instruction */ 117 EmFail_S390X_invalid_PFPO_rounding_mode, 118 119 /* The function code specified in GPR 0 executed by PFPO 120 instruction is invalid */ 121 EmFail_S390X_invalid_PFPO_function, 122 123 EmNote_NUMBER 124 } 125 VexEmNote; 126 127 128 /* Produces a short string describing the warning. */ 129 extern const HChar* LibVEX_EmNote_string ( VexEmNote ); 130 131 132 #endif /* ndef __LIBVEX_EMNOTE_H */ 133 134 /*---------------------------------------------------------------*/ 135 /*--- libvex_emnote.h ---*/ 136 /*---------------------------------------------------------------*/ 137