| |
| /*---------------------------------------------------------------*/ |
| /*--- ---*/ |
| /*--- This file (x86guest_defs.h) is ---*/ |
| /*--- Copyright (c) 2004 OpenWorks LLP. All rights reserved. ---*/ |
| /*--- ---*/ |
| /*---------------------------------------------------------------*/ |
| |
| /* Only to be used within the guest-x86 directory. */ |
| |
| /* Some of this stuff is taken from QEMU, which is Copyright (c) 2003 |
| Fabrice Bellard, and licensed under the LGPL. */ |
| |
| #ifndef __LIBVEX_X86GUEST_DEFS_H |
| #define __LIBVEX_X86GUEST_DEFS_H |
| |
| |
| /*---------------------------------------------------------*/ |
| /*--- x86 to IR conversion ---*/ |
| /*---------------------------------------------------------*/ |
| |
| extern |
| IRBB* bbToIR_X86Instr ( Char* x86code, |
| Addr64 eip, |
| Int* guest_bytes_read, |
| Bool (*byte_accessible)(Addr64), |
| Bool host_bigendian ); |
| |
| |
| /*---------------------------------------------------------*/ |
| /*--- Condition code stuff ---*/ |
| /*---------------------------------------------------------*/ |
| |
| /* eflags masks */ |
| #define CC_C 0x0001 |
| #define CC_P 0x0004 |
| #define CC_A 0x0010 |
| #define CC_Z 0x0040 |
| #define CC_S 0x0080 |
| #define CC_O 0x0800 |
| |
| /* eflags thunk descriptors. */ |
| enum { |
| CC_OP_COPY, /* nothing to do -- ccs are in CC_SRC and up to date */ |
| |
| CC_OP_MULB, /* modify all flags, C, O = (CC_SRC != 0) */ |
| CC_OP_MULW, |
| CC_OP_MULL, |
| |
| CC_OP_ADDB, /* modify all flags, CC_DST = res, CC_SRC = src1 */ |
| CC_OP_ADDW, |
| CC_OP_ADDL, |
| |
| CC_OP_ADCB, /* modify all flags, CC_DST = res, CC_SRC = src1 */ |
| CC_OP_ADCW, |
| CC_OP_ADCL, |
| |
| CC_OP_SUBB, /* modify all flags, CC_DST = res, CC_SRC = src1 */ |
| CC_OP_SUBW, |
| CC_OP_SUBL, |
| |
| CC_OP_SBBB, /* modify all flags, CC_DST = res, CC_SRC = src1 */ |
| CC_OP_SBBW, |
| CC_OP_SBBL, |
| |
| CC_OP_LOGICB, /* modify all flags, CC_DST = res */ |
| CC_OP_LOGICW, |
| CC_OP_LOGICL, |
| |
| CC_OP_INCB, /* modify all flags except, CC_DST = res, CC_SRC = C */ |
| CC_OP_INCW, |
| CC_OP_INCL, |
| |
| CC_OP_DECB, /* modify all flags except, CC_DST = res, CC_SRC = C */ |
| CC_OP_DECW, |
| CC_OP_DECL, |
| |
| CC_OP_SHLB, /* modify all flags, CC_DST = res, CC_SRC = res' */ |
| CC_OP_SHLW, /* where res' is like res but shifted one bit less */ |
| CC_OP_SHLL, |
| |
| CC_OP_SARB, /* modify all flags, CC_DST = res, CC_SRC = res' */ |
| CC_OP_SARW, /* where res' is like res but shifted one bit less */ |
| CC_OP_SARL, |
| |
| CC_OP_NB, |
| }; |
| |
| /* called from generated code to evaluate the flags-thunk. */ |
| extern UInt calculate_c ( void ); |
| extern UInt calculate_all ( void ); |
| |
| |
| /*---------------------------------------------------------*/ |
| /*--- Simulated state offsets ---*/ |
| /*---------------------------------------------------------*/ |
| |
| /* Hmm, subregisters. The simulated state is stored in memory in the |
| host's byte ordering, so we can't say here what the offsets of %ax, |
| %al, %ah etc are since that depends on the host's byte ordering, |
| which we don't know. */ |
| |
| #define OFFB_EAX (0*4) |
| #define OFFB_ECX (1*4) |
| #define OFFB_EDX (2*4) |
| #define OFFB_EBX (3*4) |
| #define OFFB_ESP (4*4) |
| #define OFFB_EBP (5*4) |
| #define OFFB_ESI (6*4) |
| #define OFFB_EDI (7*4) |
| /* 3-word thunk used to calculate O S Z A C P flags. */ |
| #define OFFB_CC_OP (8*4) |
| #define OFFB_CC_SRC (9*4) |
| #define OFFB_CC_DST (10*4) |
| /* The D flag is stored here, as either -1 or +1 */ |
| #define OFFB_DFLAG (11*4) |
| /* EIP */ |
| #define OFFB_EIF (12*4) |
| |
| |
| #define SIZEOF_X86H_STATE OFFB_EIF |
| |
| |
| |
| #endif /* ndef __LIBVEX_X86GUEST_DEFS_H */ |
| |
| /*---------------------------------------------------------------*/ |
| /*--- end x86guest_defs.h ---*/ |
| /*---------------------------------------------------------------*/ |