77 lines
3.1 KiB
C
77 lines
3.1 KiB
C
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#ifndef FD_FADEC_ENC_H_
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#define FD_FADEC_ENC_H_
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#include <stddef.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum {
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FE_AX = 0x100, FE_CX, FE_DX, FE_BX, FE_SP, FE_BP, FE_SI, FE_DI,
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FE_R8, FE_R9, FE_R10, FE_R11, FE_R12, FE_R13, FE_R14, FE_R15, FE_IP,
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FE_AH = 0x204, FE_CH, FE_DH, FE_BH,
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FE_ES = 0x300, FE_CS, FE_SS, FE_DS, FE_FS, FE_GS,
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FE_ST0 = 0x400, FE_ST1, FE_ST2, FE_ST3, FE_ST4, FE_ST5, FE_ST6, FE_ST7,
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FE_MM0 = 0x500, FE_MM1, FE_MM2, FE_MM3, FE_MM4, FE_MM5, FE_MM6, FE_MM7,
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FE_XMM0 = 0x600, FE_XMM1, FE_XMM2, FE_XMM3, FE_XMM4, FE_XMM5, FE_XMM6, FE_XMM7,
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FE_XMM8, FE_XMM9, FE_XMM10, FE_XMM11, FE_XMM12, FE_XMM13, FE_XMM14, FE_XMM15,
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} FeReg;
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typedef int64_t FeOp;
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/** Construct a memory operand. Unused parts can be set to 0 and will be
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* ignored. FE_IP can be used as base register, in which case the offset is
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* interpreted as the offset from the /current/ position -- the size of the
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* encoded instruction will be subtracted during encoding. scale must be 1, 2,
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* 4, or 8; but is ignored if idx == 0. **/
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#define FE_MEM(base,sc,idx,off) (INT64_MIN | ((int64_t) ((base) & 0xfff) << 32) | ((int64_t) ((idx) & 0xfff) << 44) | ((int64_t) ((sc) & 0xf) << 56) | ((off) & 0xffffffff))
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/** Add segment override prefix. This may or may not generate prefixes for the
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* ignored prefixes ES/CS/DS/SS in 64-bit mode. **/
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#define FE_SEG(seg) ((((seg) & 0x7) + 1) << 16)
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/** Do not use. **/
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#define FE_SEG_MASK 0x70000
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/** Overrides address size. **/
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#define FE_ADDR32 0x80000
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/** Used together with a RIP-relative (conditional) jump, this will force the
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* use of the encoding with the largest distance. Useful for reserving a jump
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* when the target offset is still unknown; if the jump is re-encoded later on,
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* FE_JMPL must be specified there, too, so that the encoding lengths match. **/
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#define FE_JMPL 0x100000
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/** Do not use. **/
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#define FE_MNEM_MASK 0xffff
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enum {
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#define FE_MNEMONIC(name,value) name = value,
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#include <fadec-enc-mnems.inc>
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#undef FE_MNEMONIC
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FE_MNEM_MAX
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};
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/** Do not use. **/
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#define fe_enc64_1(buf, mnem, op0, op1, op2, op3, ...) fe_enc64_impl(buf, mnem, op0, op1, op2, op3)
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/** Encode a single instruction for 64-bit mode.
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* \param buf Pointer to the buffer for instruction bytes, must have a size of
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* 15 bytes. The pointer is advanced by the number of bytes used for
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* encoding the specified instruction.
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* \param mnem Mnemonic, optionally or-ed with FE_SEG(), FE_ADDR32, or FE_JMPL.
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* \param operands... Instruction operands. Immediate operands are passed as
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* plain value; register operands using the FeReg enum; memory operands
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* using FE_MEM(); and offset operands for RIP-relative jumps/calls are
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* specified as _address in buf_, e.g. (intptr_t) jmptgt, the address of
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* buf and the size of the encoded instruction are subtracted internally.
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* \return Zero for success or a negative value in case of an error.
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**/
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#define fe_enc64(buf, ...) fe_enc64_1(buf, __VA_ARGS__, 0, 0, 0, 0, 0)
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/** Do not use. **/
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int fe_enc64_impl(uint8_t** buf, uint64_t mnem, FeOp op0, FeOp op1, FeOp op2, FeOp op3);
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#ifdef __cplusplus
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}
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#endif
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#endif
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