diff options
Diffstat (limited to 'src/emu/cpu/arcompact/arcompact_execute.c')
-rw-r--r-- | src/emu/cpu/arcompact/arcompact_execute.c | 91 |
1 files changed, 81 insertions, 10 deletions
diff --git a/src/emu/cpu/arcompact/arcompact_execute.c b/src/emu/cpu/arcompact/arcompact_execute.c index cf0c0fc602d..da2b5c3f786 100644 --- a/src/emu/cpu/arcompact/arcompact_execute.c +++ b/src/emu/cpu/arcompact/arcompact_execute.c @@ -120,6 +120,9 @@ void arcompact_device::execute_run() limm = (READ16((m_pc + 4) >> 1) << 16); \ limm |= READ16((m_pc + 6) >> 1); \ +#define GET_LIMM_16 \ + limm = (READ16((m_pc + 2) >> 1) << 16); \ + limm |= READ16((m_pc + 4) >> 1); \ #define PC_ALIGNED32 \ @@ -1228,10 +1231,19 @@ ARCOMPACT_RETTYPE arcompact_device::arcompact_handle03(OPS_32) int size = 4; //UINT32 limm = 0; int got_limm = 0; + int S = (op & 0x00008000) >> 15;// op &= ~0x00008000; + int s = (op & 0x00ff0000) >> 16;// op &= ~0x00ff0000; COMMON32_GET_breg; COMMON32_GET_creg; + if (S) s = -0x100 + s; + +// int R = (op & 0x00000001) >> 0; op &= ~0x00000001; // bit 0 is reserved + int Z = (op & 0x00000006) >> 1; op &= ~0x00000006; + int a = (op & 0x00000018) >> 3; op &= ~0x00000018; +// int D = (op & 0x00000020) >> 5; op &= ~0x00000020; // we don't use the data cache currently + if (breg == LIMM_REG) { //GET_LIMM_32; @@ -1252,7 +1264,27 @@ ARCOMPACT_RETTYPE arcompact_device::arcompact_handle03(OPS_32) } - arcompact_log("unimplemented ST %08x", op); + if (Z == 0) + { + UINT32 address = m_regs[breg] + s; + + WRITE32(address>>2, m_regs[creg]); + } + else if (Z == 1) + { + arcompact_fatal("illegal ST %08x (data size %d mode %d)", op, Z, a); + } + else if (Z == 2) + { + arcompact_fatal("illegal ST %08x (data size %d mode %d)", op, Z, a); + } + else + { + arcompact_fatal("illegal ST %08x (data size %d mode %d)", op, Z, a); + } + + // todo, handle 'a' increment modes + return m_pc + (size>>0); } @@ -1846,7 +1878,7 @@ ARCOMPACT_RETTYPE arcompact_device::arcompact_handle04_2b(OPS_32) // Store TO A { } - arcompact_log("unimplemented ST %08x", op); + arcompact_log("unimplemented SR %08x", op); return m_pc + (size>>0); } @@ -2164,9 +2196,36 @@ ARCOMPACT_RETTYPE arcompact_device::arcompact_handle0e_00(OPS_16) return arcompact_handle0e_0x_helper(PARAMS, "ADD_S", 0); } -ARCOMPACT_RETTYPE arcompact_device::arcompact_handle0e_01(OPS_16) +// 16-bit MOV with extended register range +ARCOMPACT_RETTYPE arcompact_device::arcompact_handle0e_01(OPS_16) // MOV_S b <- h { - return arcompact_handle0e_0x_helper(PARAMS, "MOV_S", 0); + int h,breg; + int size = 2; + + GROUP_0e_GET_h; + COMMON16_GET_breg; + REG_16BIT_RANGE(breg); + + if (h == LIMM_REG) + { + // opcode iiii ibbb hhhI Ihhh + // MOV_S b, limm 0111 0bbb 1100 1111 [LIMM] (h == LIMM) + + UINT32 limm; + GET_LIMM_16; + size = 6; + + m_regs[breg] = limm; + + } + else + { + // opcode iiii ibbb hhhI Ihhh + // MOV_S b,h 0111 0bbb hhh0 1HHH + m_regs[breg] = m_regs[h]; + } + + return m_pc+ (size>>0); } ARCOMPACT_RETTYPE arcompact_device::arcompact_handle0e_02(OPS_16) @@ -2176,7 +2235,7 @@ ARCOMPACT_RETTYPE arcompact_device::arcompact_handle0e_02(OPS_16) ARCOMPACT_RETTYPE arcompact_device::arcompact_handle0e_03(OPS_16) { - return arcompact_handle0e_0x_helper(PARAMS, "MOV_S", 1); + return arcompact_handle0e_0x_helper(PARAMS, "MOV_S (0e_03 type)", 1); } @@ -2403,15 +2462,27 @@ ARCOMPACT_RETTYPE arcompact_device::arcompact_handle18_06_11(OPS_16) // op bits remaining for 0x18_07_xx subgroups 0x0700 ARCOMPACT_RETTYPE arcompact_device::arcompact_handle18_07_01(OPS_16) { - arcompact_log("unimplemented PUSH_S %04x", op); - return m_pc + (2 >> 0);; + int breg; + COMMON16_GET_breg; + REG_16BIT_RANGE(breg); + + m_regs[REG_SP] -= 4; + + WRITE32(m_regs[REG_SP] >> 2, m_regs[breg]); + + return m_pc + (2 >> 0); } ARCOMPACT_RETTYPE arcompact_device::arcompact_handle18_07_11(OPS_16) { - arcompact_log("unimplemented PUSH_S [BLINK] %04x", op); - return m_pc + (2 >> 0);; + // breg bits are reserved + + m_regs[REG_SP] -= 4; + + WRITE32(m_regs[REG_SP] >> 2, m_regs[REG_BLINK]); + + return m_pc + (2 >> 0); } @@ -2434,7 +2505,7 @@ ARCOMPACT_RETTYPE arcompact_device::arcompact_handle1a(OPS_16) ARCOMPACT_RETTYPE arcompact_device::arcompact_handle1b(OPS_16) { - arcompact_log("unimplemented MOV_S %04x", op); + arcompact_log("unimplemented MOV_S (1b type) %04x", op); return m_pc + (2 >> 0);; } |