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(order of 'OT' and 'IT' bits corresponds with macro 'opmode')
This commit is contained in:
Roberto Ierusalimschy 2018-02-07 13:04:41 -02:00
parent 51280ef2ad
commit 73d797ce7e
1 changed files with 6 additions and 6 deletions
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12
lopcodes.h
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@ -1,5 +1,5 @@
/*
** $Id: lopcodes.h,v 1.183 2018/01/27 16:56:33 roberto Exp roberto $
** $Id: lopcodes.h,v 1.184 2018/01/28 15:13:26 roberto Exp roberto $
** Opcodes for Lua virtual machine
** See Copyright Notice in lua.h
*/
@ -334,8 +334,8 @@ OP_EXTRAARG/* Ax extra (larger) argument for previous opcode */
** bits 0-2: op mode
** bit 3: instruction set register A
** bit 4: operator is a test (next instruction must be a jump)
** bit 5: instruction sets 'L->top' for next instruction (when C == 0)
** bit 6: instruction uses 'L->top' set by previous instruction (when B == 0)
** bit 5: instruction uses 'L->top' set by previous instruction (when B == 0)
** bit 6: instruction sets 'L->top' for next instruction (when C == 0)
*/
LUAI_DDEC const lu_byte luaP_opmodes[NUM_OPCODES];
@ -343,8 +343,8 @@ LUAI_DDEC const lu_byte luaP_opmodes[NUM_OPCODES];
#define getOpMode(m) (cast(enum OpMode, luaP_opmodes[m] & 7))
#define testAMode(m) (luaP_opmodes[m] & (1 << 3))
#define testTMode(m) (luaP_opmodes[m] & (1 << 4))
#define testOTMode(m) (luaP_opmodes[m] & (1 << 5))
#define testITMode(m) (luaP_opmodes[m] & (1 << 6))
#define testITMode(m) (luaP_opmodes[m] & (1 << 5))
#define testOTMode(m) (luaP_opmodes[m] & (1 << 6))
/* "out top" (set top for next instruction) */
#define isOT(i) (testOTMode(GET_OPCODE(i)) && GETARG_C(i) == 0)
@ -352,7 +352,7 @@ LUAI_DDEC const lu_byte luaP_opmodes[NUM_OPCODES];
/* "in top" (uses top from previous instruction) */
#define isIT(i) (testITMode(GET_OPCODE(i)) && GETARG_B(i) == 0)
#define opmode(ot,it,t,a,m) (((ot)<<5) | ((it)<<6) | ((t)<<4) | ((a)<<3) | (m))
#define opmode(ot,it,t,a,m) (((ot)<<6) | ((it)<<5) | ((t)<<4) | ((a)<<3) | (m))
LUAI_DDEC const char *const luaP_opnames[NUM_OPCODES+1]; /* opcode names */