diff options
Diffstat (limited to 'drivers/staging/ktap/include/ktap_opcodes.h')
| -rw-r--r-- | drivers/staging/ktap/include/ktap_opcodes.h | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/drivers/staging/ktap/include/ktap_opcodes.h b/drivers/staging/ktap/include/ktap_opcodes.h new file mode 100644 index 000000000000..31c558b680f4 --- /dev/null +++ b/drivers/staging/ktap/include/ktap_opcodes.h @@ -0,0 +1,240 @@ +#ifndef __KTAP_BYTECODE_H__ +#define __KTAP_BYTECODE_H__ + + +/* opcode is copied from lua initially */ + +typedef enum { +/*---------------------------------------------------------------------- + * name args description + * ------------------------------------------------------------------------*/ +OP_MOVE,/* A B R(A) := R(B) */ +OP_LOADK,/* A Bx R(A) := Kst(Bx) */ +OP_LOADKX,/* A R(A) := Kst(extra arg) */ +OP_LOADBOOL,/* A B C R(A) := (Bool)B; if (C) pc++ */ +OP_LOADNIL,/* A B R(A), R(A+1), ..., R(A+B) := nil */ +OP_GETUPVAL,/* A B R(A) := UpValue[B] */ + +OP_GETTABUP,/* A B C R(A) := UpValue[B][RK(C)] */ +OP_GETTABLE,/* A B C R(A) := R(B)[RK(C)] */ + +OP_SETTABUP,/* A B C UpValue[A][RK(B)] := RK(C) */ +OP_SETTABUP_INCR,/* A B C UpValue[A][RK(B)] += RK(C) */ +OP_SETUPVAL,/* A B UpValue[B] := R(A) */ +OP_SETTABLE,/* A B C R(A)[RK(B)] := RK(C) */ +OP_SETTABLE_INCR,/* A B C R(A)[RK(B)] += RK(C) */ + +OP_NEWTABLE,/* A B C R(A) := {} (size = B,C) */ + +OP_SELF,/* A B C R(A+1) := R(B); R(A) := R(B)[RK(C)] */ + +OP_ADD,/* A B C R(A) := RK(B) + RK(C) */ +OP_SUB,/* A B C R(A) := RK(B) - RK(C) */ +OP_MUL,/* A B C R(A) := RK(B) * RK(C) */ +OP_DIV,/* A B C R(A) := RK(B) / RK(C) */ +OP_MOD,/* A B C R(A) := RK(B) % RK(C) */ +OP_POW,/* A B C R(A) := RK(B) ^ RK(C) */ +OP_UNM,/* A B R(A) := -R(B) */ +OP_NOT,/* A B R(A) := not R(B) */ +OP_LEN,/* A B R(A) := length of R(B) */ + +OP_CONCAT,/* A B C R(A) := R(B).. ... ..R(C) */ + +OP_JMP,/* A sBx pc+=sBx; if (A) close all upvalues >= R(A) + 1 */ +OP_EQ,/* A B C if ((RK(B) == RK(C)) != A) then pc++ */ +OP_LT,/* A B C if ((RK(B) < RK(C)) != A) then pc++ */ +OP_LE,/* A B C if ((RK(B) <= RK(C)) != A) then pc++ */ + +OP_TEST,/* A C if not (R(A) <=> C) then pc++ */ +OP_TESTSET,/* A B C if (R(B) <=> C) then R(A) := R(B) else pc++ */ + +OP_CALL,/* A B C R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */ +OP_TAILCALL,/* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */ +OP_RETURN,/* A B return R(A), ... ,R(A+B-2) (see note) */ + +OP_FORLOOP,/* A sBx R(A)+=R(A+2); + if R(A) <?= R(A+1) then { pc+=sBx; R(A+3)=R(A) }*/ +OP_FORPREP,/* A sBx R(A)-=R(A+2); pc+=sBx */ + +OP_TFORCALL,/* A C R(A+3), ... ,R(A+2+C) := R(A)(R(A+1), R(A+2)); */ +OP_TFORLOOP,/* A sBx if R(A+1) != nil then { R(A)=R(A+1); pc += sBx }*/ + +OP_SETLIST,/* A B C R(A)[(C-1)*FPF+i] := R(A+i), 1 <= i <= B */ + +OP_CLOSURE,/* A Bx R(A) := closure(KPROTO[Bx]) */ + +OP_VARARG,/* A B R(A), R(A+1), ..., R(A+B-2) = vararg */ + +OP_EXTRAARG,/* Ax extra (larger) argument for previous opcode */ + +OP_EVENT,/* A B C R(A) := R(B)[C] */ + +OP_EVENTNAME, /* A R(A) = event_name() */ + +OP_EVENTARG,/* A B R(A) := event_arg(B)*/ + +OP_LOAD_GLOBAL,/* A B C R(A) := R(B)[C] */ + +OP_EXIT, + +} OpCode; + + +#define NUM_OPCODES ((int)OP_LOAD_GLOBAL + 1) + + +enum OpMode {iABC, iABx, iAsBx, iAx}; /* basic instruction format */ + + +/* + * ** size and position of opcode arguments. + * */ +#define SIZE_C 9 +#define SIZE_B 9 +#define SIZE_Bx (SIZE_C + SIZE_B) +#define SIZE_A 8 +#define SIZE_Ax (SIZE_C + SIZE_B + SIZE_A) + +#define SIZE_OP 6 + +#define POS_OP 0 +#define POS_A (POS_OP + SIZE_OP) +#define POS_C (POS_A + SIZE_A) +#define POS_B (POS_C + SIZE_C) +#define POS_Bx POS_C +#define POS_Ax POS_A + + + +/* + * ** limits for opcode arguments. + * ** we use (signed) int to manipulate most arguments, + * ** so they must fit in LUAI_BITSINT-1 bits (-1 for sign) + * */ +#define MAXARG_Bx ((1<<SIZE_Bx)-1) +#define MAXARG_sBx (MAXARG_Bx>>1) /* `sBx' is signed */ + +#define MAXARG_Ax ((1<<SIZE_Ax)-1) + +#define MAXARG_A ((1<<SIZE_A)-1) +#define MAXARG_B ((1<<SIZE_B)-1) +#define MAXARG_C ((1<<SIZE_C)-1) + + +/* creates a mask with `n' 1 bits at position `p' */ +#define MASK1(n,p) ((~((~(ktap_instruction)0)<<(n)))<<(p)) + +/* creates a mask with `n' 0 bits at position `p' */ +#define MASK0(n,p) (~MASK1(n,p)) + +/* + * ** the following macros help to manipulate instructions + * */ + +#define GET_OPCODE(i) ((OpCode)((i)>>POS_OP) & MASK1(SIZE_OP,0)) +#define SET_OPCODE(i,o) ((i) = (((i)&MASK0(SIZE_OP,POS_OP)) | \ + ((((ktap_instruction)o)<<POS_OP)&MASK1(SIZE_OP,POS_OP)))) + +#define getarg(i,pos,size) ((int)((i)>>pos) & MASK1(size,0)) +#define setarg(i,v,pos,size) ((i) = (((i)&MASK0(size,pos)) | \ + ((((ktap_instruction)v)<<pos)&MASK1(size,pos)))) + +#define GETARG_A(i) getarg(i, POS_A, SIZE_A) +#define SETARG_A(i,v) setarg(i, v, POS_A, SIZE_A) + +#define GETARG_A(i) getarg(i, POS_A, SIZE_A) +#define SETARG_A(i,v) setarg(i, v, POS_A, SIZE_A) + +#define GETARG_B(i) getarg(i, POS_B, SIZE_B) +#define SETARG_B(i,v) setarg(i, v, POS_B, SIZE_B) + +#define GETARG_C(i) getarg(i, POS_C, SIZE_C) +#define SETARG_C(i,v) setarg(i, v, POS_C, SIZE_C) + +#define GETARG_Bx(i) getarg(i, POS_Bx, SIZE_Bx) +#define SETARG_Bx(i,v) setarg(i, v, POS_Bx, SIZE_Bx) + +#define GETARG_Ax(i) getarg(i, POS_Ax, SIZE_Ax) +#define SETARG_Ax(i,v) setarg(i, v, POS_Ax, SIZE_Ax) + +#define GETARG_sBx(i) (GETARG_Bx(i)-MAXARG_sBx) +#define SETARG_sBx(i,b) SETARG_Bx((i), (unsigned int)(b)+MAXARG_sBx) + +#define CREATE_ABC(o,a,b,c) (((ktap_instruction)(o))<<POS_OP) \ + | (((ktap_instruction)(a))<<POS_A) \ + | (((ktap_instruction)(b))<<POS_B) \ + | (((ktap_instruction)(c))<<POS_C) + +#define CREATE_ABx(o,a,bc) (((ktap_instruction)(o))<<POS_OP) \ + | (((ktap_instruction)(a))<<POS_A) \ + | (((ktap_instruction)(bc))<<POS_Bx) + +#define CREATE_Ax(o,a) (((ktap_instruction)(o))<<POS_OP) \ + | (((ktap_instruction)(a))<<POS_Ax) + + + +/* + * ** Macros to operate RK indices + * */ + +/* this bit 1 means constant (0 means register) */ +#define BITRK (1 << (SIZE_B - 1)) + +/* test whether value is a constant */ +#define ISK(x) ((x) & BITRK) + +/* gets the index of the constant */ +#define INDEXK(r) ((int)(r) & ~BITRK) + +#define MAXINDEXRK (BITRK - 1) + +/* code a constant index as a RK value */ +#define RKASK(x) ((x) | BITRK) + + +/* + * ** invalid register that fits in 8 bits + * */ +#define NO_REG MAXARG_A + + +/* + * ** R(x) - register + * ** Kst(x) - constant (in constant table) + * ** RK(x) == if ISK(x) then Kst(INDEXK(x)) else R(x) + * */ + + + +/* + * ** masks for instruction properties. The format is: + * ** bits 0-1: op mode + * ** bits 2-3: C arg mode + * ** bits 4-5: B arg mode + * ** bit 6: instruction set register A + * ** bit 7: operator is a test (next instruction must be a jump) + * */ + +enum OpArgMask { + OpArgN, /* argument is not used */ + OpArgU, /* argument is used */ + OpArgR, /* argument is a register or a jump offset */ + OpArgK /* argument is a constant or register/constant */ +}; + +extern const u8 ktap_opmodes[NUM_OPCODES]; + +#define getOpMode(m) ((enum OpMode)ktap_opmodes[m] & 3) +#define getBMode(m) ((enum OpArgMask)(ktap_opmodes[m] >> 4) & 3) +#define getCMode(m) ((enum OpArgMask)(ktap_opmodes[m] >> 2) & 3) +#define testAMode(m) (ktap_opmodes[m] & (1 << 6)) +#define testTMode(m) (ktap_opmodes[m] & (1 << 7)) + + +/* number of list items to accumulate before a SETLIST instruction */ +#define LFIELDS_PER_FLUSH 50 + +extern const char *const ktap_opnames[NUM_OPCODES + 1]; + +#endif /* __KTAP_BYTECODE_H__ */ |