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fadec: Store broadcast size in segment

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This is a preparation for AVX512-FP16, where the broadcast size is not
just 32/64 bit depending solely on EVEX.W, but can also be 16 bit (with
EVEX.W=0). The broadcast size therefore needs two bits, but the evex
field only had one free bit left. Store broadcast size with the segment
for now. (This is not a good fit and is likely to change at some point.)
This commit is contained in:
Alexis Engelke
2022-12-26 16:57:22 +01:00
parent a3c8848005
commit 06832825ec
3 changed files with 13 additions and 11 deletions
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9
fadec.h
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@@ -192,7 +192,7 @@ const char* fdi_name(FdInstrType ty);
/** Gets the size of the instruction in bytes. **/
#define FD_SIZE(instr) ((instr)->size)
/** Gets the specified segment override, or FD_REG_NONE for default segment. **/
#define FD_SEGMENT(instr) ((FdReg) (instr)->segment)
#define FD_SEGMENT(instr) ((FdReg) (instr)->segment & 0x3f)
/** Gets the address size attribute of the instruction in bytes. **/
#define FD_ADDRSIZE(instr) (1 << (instr)->addrsz)
/** Get the logarithmic address size; FD_ADDRSIZE == 1 << FD_ADDRSIZELG **/
@@ -262,9 +262,12 @@ const char* fdi_name(FdInstrType ty);
/** Gets the sign-extended displacement of a memory operand.
* Only valid if FD_OP_TYPE == FD_OT_MEM/MEMBCST **/
#define FD_OP_DISP(instr,idx) ((int64_t) (instr)->disp)
/** Get whether the memory broadcast is 64-bit (otherwise: 32-bit).
/** Get memory broadcast size in bytes.
* Only valid if FD_OP_TYPE == FD_OT_MEMBCST **/
#define FD_OP_BCST64(instr,idx) (!!((instr)->evex & 0x08))
#define FD_OP_BCSTSZ(instr,idx) (1 << FD_OP_BCSTSZLG(instr,idx))
/** Get logarithmic memory broadcast size (1 = 2-byte; 2=4-byte; 3=8-byte).
* Only valid if FD_OP_TYPE == FD_OT_MEMBCST **/
#define FD_OP_BCSTSZLG(instr,idx) ((instr)->segment >> 6)
/** Gets the (sign-extended) encoded constant for an immediate operand.
* Only valid if FD_OP_TYPE == FD_OT_IMM or FD_OP_TYPE == FD_OT_OFF **/
#define FD_OP_IMM(instr,idx) ((instr)->imm)