265 lines
7.7 KiB
C
265 lines
7.7 KiB
C
#include "ansidecl.h"
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#include "opcode/v850.h"
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/* Local insertion and extraction functions. */
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static unsigned long insert_d9 PARAMS ((unsigned long, long, const char **));
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static long extract_d9 PARAMS ((unsigned long, int *));
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/* regular opcode */
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#define OP(x) ((x & 0x3f) << 5)
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#define OP_MASK OP(0x3f)
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/* conditional branch opcode */
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#define BOP(x) ((0x0b << 7) | (x & 0x0f))
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#define BOP_MASK ((0x0b << 7) | 0x0f)
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/* one-word opcodes */
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#define one(x) ((unsigned int) (x))
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/* two-word opcodes */
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#define two(x,y) ((unsigned int) (x) | ((unsigned int) (y) << 16))
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const struct v850_operand v850_operands[] = {
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#define UNUSED 0
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{ 0, 0, 0, 0, 0 },
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/* The R1 field in a format 1, 6, 7, or 9 insn. */
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#define R1 (UNUSED+1)
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{ 5, 0, 0, 0, V850_OPERAND_REG },
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/* The R2 field in a format 1, 2, 4, 5, 6, 7, 9 insn. */
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#define R2 (R1+1)
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{ 5, 11, 0, 0, V850_OPERAND_REG },
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/* The IMM5 field in a format 2 insn. */
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#define I5 (R2+1)
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{ 5, 0, 0, 0, V850_OPERAND_SIGNED },
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#define I5U (I5+1)
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{ 5, 0, 0, 0, 0 },
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/* The IMM16 field in a format 6 insn. */
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#define I16 (I5U+1)
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{ 16, 16, 0, 0, 0 },
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/* The signed DISP7 field in a format 4 insn. */
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#define D7S (I16+1)
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{ 7, 0, 0, 0, V850_OPERAND_SIGNED },
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/* The DISP9 field in a format 3 insn. */
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#define D9 (D7S+1)
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{ 0, 0, insert_d9, extract_d9, V850_OPERAND_SIGNED },
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/* The DISP16 field in a format 6 insn. */
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#define D16 (D9+1)
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{ 16, 16, 0, 0, V850_OPERAND_SIGNED },
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/* The DISP22 field in a format 4 insn. */
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#define D22 (D16+1)
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{ 16, 0, 0, 0, 0 },
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#define B3 (D22+1)
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/* The 3 bit immediate field in format 8 insn. */
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{ 3, 11, 0, 0, 0 },
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#define CCCC (B3+1)
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/* The 4 bit condition code in a setf instruction */
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{ 4, 0, 0, 0, V850_OPERAND_CC },
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/* The unsigned DISP8 field in a format 4 insn. */
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#define D8 (CCCC+1)
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{ 8, 0, 0, 0, 0 },
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/* System register operands. */
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#define SR1 (D8+1)
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{ 5, 0, 0, 0, V850_OPERAND_SRG },
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#define SR2 (SR1+1)
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{ 5, 11, 0, 0, V850_OPERAND_SRG },
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} ;
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/* reg-reg instruction format (Format I) */
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#define IF1 {R1, R2}
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/* imm-reg instruction format (Format II) */
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#define IF2 {I5, R2}
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/* conditional branch instruction format (Format III) */
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#define IF3 {D9}
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/* 16-bit load/store instruction (Format IV) */
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#define IF4A {D7S, R1, R2}
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#define IF4B {R2, D7S, R1}
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#define IF4C {D8, R1, R2}
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#define IF4D {R2, D8, R1}
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/* Jump instruction (Format V) */
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#define IF5 {D22}
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/* 3 operand instruction (Format VI) */
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#define IF6 {I16, R1, R2}
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/* 32-bit load/store instruction (Format VII) */
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#define IF7A {D16, R1, R2}
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#define IF7B {R2, D16, R1}
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/* Bit manipulation function. */
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/* The opcode table.
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The format of the opcode table is:
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NAME OPCODE MASK { OPERANDS }
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NAME is the name of the instruction.
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OPCODE is the instruction opcode.
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MASK is the opcode mask; this is used to tell the disassembler
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which bits in the actual opcode must match OPCODE.
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OPERANDS is the list of operands.
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The disassembler reads the table in order and prints the first
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instruction which matches, so this table is sorted to put more
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specific instructions before more general instructions. It is also
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sorted by major opcode. */
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const struct v850_opcode v850_opcodes[] = {
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/* load/store instructions */
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{ "sld.b", OP(0x00), OP_MASK, IF4A, 2 },
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{ "sld.h", OP(0x00), OP_MASK, IF4C, 2 },
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{ "sld.w", OP(0x00), OP_MASK, IF4C, 2 },
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{ "sst.b", OP(0x00), OP_MASK, IF4B, 2 },
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{ "sst.h", OP(0x00), OP_MASK, IF4D, 2 },
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{ "sst.w", OP(0x00), OP_MASK, IF4D, 2 },
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{ "ld.b", OP(0x00), OP_MASK, IF7A, 4 },
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{ "ld.h", OP(0x00), OP_MASK, IF7A, 4 },
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{ "ld.w", OP(0x00), OP_MASK, IF7A, 4 },
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{ "st.b", OP(0x00), OP_MASK, IF7B, 4 },
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{ "st.h", OP(0x00), OP_MASK, IF7B, 4 },
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{ "st.w", OP(0x00), OP_MASK, IF7B, 4 },
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/* arithmetic operation instructions */
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{ "mov", OP(0x00), OP_MASK, IF1, 2 },
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{ "mov", OP(0x08), OP_MASK, IF2, 2 },
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{ "movea", OP(0x31), OP_MASK, IF6, 4 },
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{ "movhi", OP(0x31), OP_MASK, IF6, 4 },
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{ "add", OP(0x0e), OP_MASK, IF1, 2 },
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{ "add", OP(0x12), OP_MASK, IF2, 2 },
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{ "addi", OP(0x30), OP_MASK, IF6, 4 },
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{ "sub", OP(0x0d), OP_MASK, IF1, 2 },
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{ "subr", OP(0x0c), OP_MASK, IF1, 2 },
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{ "mulh", OP(0x07), OP_MASK, IF1, 2 },
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{ "mulh", OP(0x17), OP_MASK, IF2, 2 },
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{ "mulhi", OP(0x37), OP_MASK, IF6, 4 },
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{ "divh", OP(0x02), OP_MASK, IF1, 2 },
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{ "cmp", OP(0x0f), OP_MASK, IF1, 2 },
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{ "cmp", OP(0x13), OP_MASK, IF2, 2 },
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{ "setf", two(0x07e0,0x0000), two(0x07f0,0xffff), {CCCC,R2}, 4 },
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/* saturated operation instructions */
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{ "satadd", OP(0x06), OP_MASK, IF1, 2 },
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{ "satadd", OP(0x11), OP_MASK, IF2, 2 },
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{ "satsub", OP(0x05), OP_MASK, IF1, 2 },
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{ "satsubi", OP(0x33), OP_MASK, IF6, 4 },
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{ "satsubr", OP(0x04), OP_MASK, IF1, 2 },
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/* logical operation instructions */
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{ "tst", OP(0x0b), OP_MASK, IF1, 2 },
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{ "or", OP(0x08), OP_MASK, IF1, 2 },
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{ "ori", OP(0x34), OP_MASK, IF6, 4 },
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{ "and", OP(0x0a), OP_MASK, IF1, 2 },
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{ "andi", OP(0x36), OP_MASK, IF6, 4 },
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{ "xor", OP(0x09), OP_MASK, IF1, 2 },
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{ "xori", OP(0x35), OP_MASK, IF6, 4 },
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{ "not", OP(0x01), OP_MASK, IF1, 2 },
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{ "sar", OP(0x15), OP_MASK, {I5U, R2}, 2 },
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{ "sar", two(0x07e0,0x00a0), two(0x07e0,0xffff), {R1,R2}, 4 },
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{ "shl", OP(0x16), OP_MASK, {I5U, R2}, 2 },
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{ "shl", two(0x07e0,0x00c0), two(0x07e0,0xffff), {R1,R2}, 4 },
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{ "shr", OP(0x14), OP_MASK, {I5U, R2}, 2 },
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{ "shr", two(0x07e0,0x0080), two(0x07e0,0xffff), {R1,R2}, 4 },
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/* branch instructions */
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/* signed integer */
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{ "bgt", BOP(0xf), BOP_MASK, IF3, 2 },
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{ "bge", BOP(0xe), BOP_MASK, IF3, 2 },
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{ "blt", BOP(0x6), BOP_MASK, IF3, 2 },
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{ "ble", BOP(0x7), BOP_MASK, IF3, 2 },
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/* unsigned integer */
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{ "bh", BOP(0xb), BOP_MASK, IF3, 2 },
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{ "bnh", BOP(0x3), BOP_MASK, IF3, 2 },
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{ "bl", BOP(0x1), BOP_MASK, IF3, 2 },
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{ "bnl", BOP(0x9), BOP_MASK, IF3, 2 },
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/* common */
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{ "be", BOP(0x2), BOP_MASK, IF3, 2 },
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{ "bne", BOP(0xa), BOP_MASK, IF3, 2 },
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/* others */
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{ "bv", BOP(0x0), BOP_MASK, IF3, 2 },
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{ "bnv", BOP(0x8), BOP_MASK, IF3, 2 },
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{ "bn", BOP(0x4), BOP_MASK, IF3, 2 },
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{ "bp", BOP(0xc), BOP_MASK, IF3, 2 },
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{ "bc", BOP(0x1), BOP_MASK, IF3, 2 },
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{ "bnc", BOP(0x9), BOP_MASK, IF3, 2 },
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{ "bz", BOP(0x2), BOP_MASK, IF3, 2 },
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{ "bnz", BOP(0xa), BOP_MASK, IF3, 2 },
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{ "br", BOP(0x5), BOP_MASK, IF3, 2 },
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{ "bsa", BOP(0xd), BOP_MASK, IF3, 2 },
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{ "jmp", one(0x0060), one(0xffe0), { R1}, 2 },
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{ "jarl", one(0x0780), one(0xf83f), { D22, R2 }, 4 },
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{ "jr", one(0x0780), one(0xffe0), { D22 }, 4 },
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/* bit manipulation instructions */
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{ "set1", two(0x07c0,0x0000), two(0xc7e0,0x0000), {B3, D16, R1}, 4 },
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{ "not1", two(0x47c0,0x0000), two(0xc7e0,0x0000), {B3, D16, R1}, 4 },
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{ "clr1", two(0x87c0,0x0000), two(0xc7e0,0x0000), {B3, D16, R1}, 4 },
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{ "tst1", two(0xc7c0,0x0000), two(0xc7e0,0x0000), {B3, D16, R1}, 4 },
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/* special instructions */
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{ "di", two(0x07e0,0x0160), two(0xffff,0xffff), {0}, 4 },
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{ "ei", two(0x87e0,0x0160), two(0xffff,0xffff), {0}, 4 },
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{ "halt", two(0x07e0,0x0120), two(0xffff,0xffff), {0}, 4 },
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{ "reti", two(0x07e0,0x0140), two(0xffff,0xffff), {0}, 4 },
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{ "trap", two(0x07e0,0x0100), two(0xffe0,0xffff), {I5U}, 4 },
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{ "ldsr", two(0x07e0,0x0020), two(0x07e0,0xffff), {R1,SR2}, 4 },
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{ "stsr", two(0x07e0,0x0040), two(0x07e0,0xffff), {SR1,R2}, 4 },
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{ "nop", one(0x00), one(0xff), {0}, 2 },
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} ;
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const int v850_num_opcodes =
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sizeof (v850_opcodes) / sizeof (v850_opcodes[0]);
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/* The functions used to insert and extract complicated operands. */
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static unsigned long
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insert_d9 (insn, value, errmsg)
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unsigned long insn;
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long value;
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const char **errmsg;
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{
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if (value > 511 || value <= -512)
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*errmsg = "value out of range";
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return (insn | ((value & 0x1f0) << 7) | ((value & 0x0e) << 3));
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}
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static long
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extract_d9 (insn, invalid)
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unsigned long insn;
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int *invalid;
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{
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long ret = ((insn & 0xf800) >> 7) | ((insn & 0x0070) >> 3);
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if ((insn & 0x8000) != 0)
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ret -= 0x0200;
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return ret;
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}
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