diff options
Diffstat (limited to 'src/devices/cpu/asap/asapdasm.cpp')
-rw-r--r-- | src/devices/cpu/asap/asapdasm.cpp | 45 |
1 files changed, 24 insertions, 21 deletions
diff --git a/src/devices/cpu/asap/asapdasm.cpp b/src/devices/cpu/asap/asapdasm.cpp index 840c50f2635..8f652b6dad4 100644 --- a/src/devices/cpu/asap/asapdasm.cpp +++ b/src/devices/cpu/asap/asapdasm.cpp @@ -9,10 +9,10 @@ ***************************************************************************/ #include "emu.h" -#include "asap.h" +#include "asapdasm.h" -static const char *const reg[32] = +const char *const asap_disassembler::reg[32] = { "0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", @@ -20,12 +20,12 @@ static const char *const reg[32] = "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31" }; -static const char *const setcond[2] = +const char *const asap_disassembler::setcond[2] = { " ", ".c" }; -static const char *const condition[16] = +const char *const asap_disassembler::condition[16] = { "sp", "mz", "gt", "le", "ge", "lt", "hi", "ls", "cc", "cs", "pl", "mi", "ne", "eq", "vc", "vs" }; @@ -35,19 +35,17 @@ static const char *const condition[16] = CODE CODE ***************************************************************************/ -static inline char *src2(uint32_t op, int scale) +std::string asap_disassembler::src2(uint32_t op, int scale) { - static char temp[20]; if ((op & 0xffe0) == 0xffe0) - sprintf(temp, "%s", reg[op & 31]); + return util::string_format("%s", reg[op & 31]); else - sprintf(temp, "$%x", (op & 0xffff) << scale); - return temp; + return util::string_format("$%x", (op & 0xffff) << scale); } -CPU_DISASSEMBLE(asap) +offs_t asap_disassembler::disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer ¶ms) { - uint32_t op = oprom[0] | (oprom[1] << 8) | (oprom[2] << 16) | (oprom[3] << 24); + uint32_t op = opcodes.r32(pc); int opcode = op >> 27; int cond = (op >> 21) & 1; int rdst = (op >> 22) & 31; @@ -58,21 +56,21 @@ CPU_DISASSEMBLE(asap) switch (opcode) { - case 0x00: util::stream_format(stream, "trap $00"); flags = DASMFLAG_STEP_OVER; break; + case 0x00: util::stream_format(stream, "trap $00"); flags = STEP_OVER; break; case 0x01: util::stream_format(stream, "b%s $%08x", condition[rdst & 15], pc + ((int32_t)(op << 10) >> 8)); break; case 0x02: if ((op & 0x003fffff) == 3) { - uint32_t nextop = oprom[4] | (oprom[5] << 8) | (oprom[6] << 16) | (oprom[7] << 24); + uint32_t nextop = opcodes.r32(pc+4); if ((nextop >> 27) == 0x10 && ((nextop >> 22) & 31) == rdst && (nextop & 0xffff) == 0) { - uint32_t nextnextop = oprom[8] | (oprom[9] << 8) | (oprom[10] << 16) | (oprom[11] << 24); + uint32_t nextnextop = opcodes.r32(pc+8); util::stream_format(stream, "llit%s $%08x,%s", setcond[cond], nextnextop, reg[rdst]); - return 12 | DASMFLAG_STEP_OVER | DASMFLAG_SUPPORTED; + return 12 | STEP_OVER | SUPPORTED; } } if (rdst) { - flags = DASMFLAG_STEP_OVER | DASMFLAG_STEP_OVER_EXTRA(1); + flags = STEP_OVER | step_over_extra(1); util::stream_format(stream, "bsr %s,$%08x", reg[rdst], pc + ((int32_t)(op << 10) >> 8)); } else @@ -123,24 +121,29 @@ CPU_DISASSEMBLE(asap) case 0x1d: util::stream_format(stream, "putps %s", src2(op,0)); break; case 0x1e: if (rdst && rsrc2_iszero) { - flags = DASMFLAG_STEP_OVER | DASMFLAG_STEP_OVER_EXTRA(1); + flags = STEP_OVER | step_over_extra(1); util::stream_format(stream, "jsr%s %s,%s", setcond[cond], reg[rdst], reg[rsrc1]); } else if (rdst) { - flags = DASMFLAG_STEP_OVER | DASMFLAG_STEP_OVER_EXTRA(1); + flags = STEP_OVER | step_over_extra(1); util::stream_format(stream, "jsr%s %s,%s[%s]", setcond[cond], reg[rdst], reg[rsrc1], src2(op,2)); } else if (rsrc2_iszero) { if (rsrc1 == 28) - flags = DASMFLAG_STEP_OUT; + flags = STEP_OUT; util::stream_format(stream, "jmp%s %s", setcond[cond], reg[rsrc1]); } else util::stream_format(stream, "jmp%s %s[%s]", setcond[cond], reg[rsrc1], src2(op,2)); break; - case 0x1f: util::stream_format(stream, "trap $1f"); flags = DASMFLAG_STEP_OVER; break; + case 0x1f: util::stream_format(stream, "trap $1f"); flags = STEP_OVER; break; } - return 4 | flags | DASMFLAG_SUPPORTED; + return 4 | flags | SUPPORTED; +} + +u32 asap_disassembler::opcode_alignment() const +{ + return 4; } |