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r33639 Wednesday 3rd December, 2014 at 01:38:25 UTC by David Haywood
skeleton CPU core so that I can begin to write an ARC disassembler (nw)
[src/emu/cpu]cpu.mak
[src/emu/cpu/arc]arc.c* arc.h* arcdasm.c*
[src/mess]mess.mak
[src/mess/drivers]leapster.c

trunk/src/emu/cpu/arc/arc.c
r0r242151
1/*********************************\
2
3 ARCtangent (A4) core
4 ARC == Argonaut RISC Core
5
6 (this is a skeleton core)
7
8\*********************************/
9
10#include "emu.h"
11#include "debugger.h"
12#include "arc.h"
13
14
15const device_type ARC = &device_creator<arc_device>;
16
17
18arc_device::arc_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
19   : cpu_device(mconfig, ARC, "ARCtangent A4", tag, owner, clock, "arc", __FILE__)
20   , m_program_config("program", ENDIANNESS_BIG, 32, 24, 0) // some docs describe these as 'middle endian'?!
21{
22}
23
24
25offs_t arc_device::disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options)
26{
27   extern CPU_DISASSEMBLE( arc );
28   return CPU_DISASSEMBLE_NAME(arc)(this, buffer, pc, oprom, opram, options);
29}
30
31
32/*****************************************************************************/
33
34/*****************************************************************************/
35
36void arc_device::unimplemented_opcode(UINT16 op)
37{
38   fatalerror("arc: unknown opcode %04x at %04x\n", op, m_pc << 2);
39}
40
41/*****************************************************************************/
42
43UINT16 arc_device::READ32(UINT32 address)
44{
45   return m_program->read_dword(address << 2);
46}
47
48void arc_device::WRITE32(UINT32 address, UINT32 data)
49{
50   m_program->write_dword(address << 2, data);
51}
52
53/*****************************************************************************/
54
55void arc_device::device_start()
56{
57   m_pc = 0;
58
59   m_debugger_temp = 0;
60
61   m_program = &space(AS_PROGRAM);
62
63   state_add( 0,  "PC", m_debugger_temp).callimport().callexport().formatstr("%08X");
64   state_add(STATE_GENPC, "GENPC", m_debugger_temp).callexport().noshow();
65
66   m_icountptr = &m_icount;
67}
68
69void arc_device::state_export(const device_state_entry &entry)
70{
71   switch (entry.index())
72   {
73      case 0:
74         m_debugger_temp = m_pc << 2;
75         break;
76
77      case STATE_GENPC:
78         m_debugger_temp = m_pc << 2;
79         break;
80   }
81}
82
83void arc_device::state_import(const device_state_entry &entry)
84{
85   switch (entry.index())
86   {
87      case 0:
88         m_pc = (m_debugger_temp & 0xfffffffc) >> 2;
89         break;
90   }
91}
92
93void arc_device::device_reset()
94{
95   m_pc = 0x00000000;
96}
97
98/*****************************************************************************/
99
100void arc_device::execute_set_input(int irqline, int state)
101{
102
103}
104
105
106void arc_device::execute_run()
107{
108   //UINT32 lres;
109   //lres = 0;
110
111   while (m_icount > 0)
112   {
113      debugger_instruction_hook(this, m_pc<<2);
114
115      //UINT32 op = READ32(m_pc);
116
117      m_pc++;
118
119      m_icount--;
120   }
121
122}
trunk/src/emu/cpu/arc/arc.h
r0r242151
1/*********************************\
2
3 ARCtangent (A4) core
4 ARC == Argonaut RISC Core
5
6\*********************************/
7
8#pragma once
9
10#ifndef __ARC_H__
11#define __ARC_H__
12
13class arc_device : public cpu_device
14{
15public:
16   // construction/destruction
17   arc_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
18
19protected:
20   // device-level overrides
21   virtual void device_start();
22   virtual void device_reset();
23
24   // device_execute_interface overrides
25   virtual UINT32 execute_min_cycles() const { return 5; }
26   virtual UINT32 execute_max_cycles() const { return 5; }
27   virtual UINT32 execute_input_lines() const { return 0; }
28   virtual void execute_run();
29   virtual void execute_set_input(int inputnum, int state);
30
31   // device_memory_interface overrides
32   virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const { return (spacenum == AS_PROGRAM) ? &m_program_config : NULL; }
33
34   // device_state_interface overrides
35   virtual void state_import(const device_state_entry &entry);
36   virtual void state_export(const device_state_entry &entry);
37
38   // device_disasm_interface overrides
39   virtual UINT32 disasm_min_opcode_bytes() const { return 4; }
40   virtual UINT32 disasm_max_opcode_bytes() const { return 4; }
41   virtual offs_t disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options);
42
43private:
44   address_space_config m_program_config;
45
46   // 0 - 28 = r00 - r28 (General Purpose Registers)
47   //     29 = r29 (ILINK1)
48   //     30 = r30 (ILINE2)
49   //     31 = r31 (BLINK)
50   // 32- 59 = r32 - r59 (Reserved Registers)
51   //     60 = LPCOUNT
52   //     61 = Short Immediate Data Indicator Settings Flag
53   //     62 = Long Immediate Data Indicator
54   //     63 = Short Immediate Data Indicator NOT Settings Flag
55   UINT32 m_pc;
56   UINT32 m_r[64];
57
58
59   address_space *m_program;
60   int m_icount;
61
62   UINT32 m_debugger_temp;
63
64   void unimplemented_opcode(UINT16 op);
65   inline UINT16 READ32(UINT32 address);
66   inline void WRITE32(UINT32 address, UINT32 data);
67};
68
69
70extern const device_type ARC;
71
72
73#endif /* __ARC_H__ */
trunk/src/emu/cpu/arc/arcdasm.c
r0r242151
1/*********************************\
2
3 ARCtangent (A4? A5?) disassembler
4
5\*********************************/
6
7#include "emu.h"
8#include <stdarg.h>
9
10static char *output;
11
12static void ATTR_PRINTF(1,2) print(const char *fmt, ...)
13{
14   va_list vl;
15
16   va_start(vl, fmt);
17   vsprintf(output, fmt, vl);
18   va_end(vl);
19}
20
21/*****************************************************************************/
22
23
24
25/*****************************************************************************/
26
27static const char *basic[0x20] =
28{
29   /* 00 */ "LD r+r",
30   /* 01 */ "LD r+o",
31   /* 02 */ "ST r+o",
32   /* 03 */ "extended",
33   /* 04 */ "Bcc",
34   /* 05 */ "BLcc",
35   /* 06 */ "LPcc",
36   /* 07 */ "Jcc JLcc",
37   /* 08 */ "ADD",
38   /* 09 */ "ADC",
39   /* 0a */ "SUB",
40   /* 0b */ "SBC",
41   /* 0c */ "AND",
42   /* 0d */ "OR",
43   /* 0e */ "BIC",
44   /* 0f */ "XOR",
45   /* 10 */ "ASL",
46   /* 11 */ "LSR",
47   /* 12 */ "ASR",
48   /* 13 */ "ROR",
49   /* 14 */ "MUL64",
50   /* 15 */ "MULU64",
51   /* 16 */ "undefined",
52   /* 17 */ "undefined",
53   /* 18 */ "undefined",
54   /* 19 */ "undefined",
55   /* 1a */ "undefined",
56   /* 1b */ "undefined",
57   /* 1c */ "undefined",
58   /* 1d */ "undefined",
59   /* 1e */ "MAX",
60   /* 1f */ "MIN"
61};
62
63
64CPU_DISASSEMBLE( arc )
65{
66   UINT32 op = oprom[0] | (oprom[1] << 8) | (oprom[2] << 16) | (oprom[3] << 24);
67   op = BIG_ENDIANIZE_INT32(op);
68
69   output = buffer;
70
71   UINT8 opcode = (op & 0xf8000000) >> 27;
72
73   print("%s (%08x)", basic[opcode], op &~ 0xf8000000);
74
75   return 4 | DASMFLAG_SUPPORTED;
76}
trunk/src/emu/cpu/cpu.mak
r242150r242151
7979
8080$(CPUOBJ)/8x300/8x300.o:    $(CPUSRC)/8x300/8x300.c \
8181                     $(CPUSRC)/8x300/8x300.h
82#-------------------------------------------------
83# ARCangent A4
84#@src/emu/cpu/arc/arc.h,CPUS += ARC
85#-------------------------------------------------
8286
87ifneq ($(filter ARC,$(CPUS)),)
88OBJDIRS += $(CPUOBJ)/arc
89CPUOBJS += $(CPUOBJ)/arc/arc.o
90DASMOBJS += $(CPUOBJ)/arc/arcdasm.o
91endif
92
93$(CPUOBJ)/arc/arc.o:  $(CPUSRC)/arc/arc.c \
94         $(CPUSRC)/arc/arc.h
95
8396#-------------------------------------------------
8497# Acorn ARM series
8598#
trunk/src/mess/drivers/leapster.c
r242150r242151
207207#include "emu.h"
208208#include "bus/generic/slot.h"
209209#include "bus/generic/carts.h"
210#include "cpu/arc/arc.h"
210211
211212
212213class leapster_state : public driver_device
r242150r242151
263264{
264265}
265266
267static ADDRESS_MAP_START( leapster_map, AS_PROGRAM, 32, leapster_state )
268   AM_RANGE(0x000000, 0x1fffff) AM_ROM
269ADDRESS_MAP_END
266270
267
268271static MACHINE_CONFIG_START( leapster, leapster_state )
269272   /* basic machine hardware */
270273   // CPU is ArcTangent A5
274   MCFG_CPU_ADD("maincpu", ARC, 96000000/10)
275   MCFG_CPU_PROGRAM_MAP(leapster_map)
271276
277
272278   /* video hardware */
273279   MCFG_SCREEN_ADD("screen", LCD)
274280   MCFG_SCREEN_REFRESH_RATE(60)
r242150r242151
287293
288294ROM_START(leapster)
289295   ROM_REGION(0x200000, "maincpu", ROMREGION_ERASE00)
290   ROM_LOAD( "155-10072-a.bin", 0x00000, 0x200000, CRC(af05e5a0) SHA1(d4468d060543ba7e44785041093bc98bcd9afa07) )
296   ROM_LOAD16_WORD_SWAP( "155-10072-a.bin", 0x00000, 0x200000, CRC(af05e5a0) SHA1(d4468d060543ba7e44785041093bc98bcd9afa07) )
291297ROM_END
292298
293299ROM_START(leapstertv)
294300   ROM_REGION(0x200000, "maincpu", ROMREGION_ERASE00)
295   ROM_LOAD( "am29pl160cb-90sf.bin", 0x00000, 0x200000, BAD_DUMP CRC(dc281f1f) SHA1(17588de54ab3bb82801bd5062f3e6aa687412178) )
301   ROM_LOAD16_WORD_SWAP( "am29pl160cb-90sf.bin", 0x00000, 0x200000, BAD_DUMP CRC(dc281f1f) SHA1(17588de54ab3bb82801bd5062f3e6aa687412178) )
296302ROM_END
297303
298304
trunk/src/mess/mess.mak
r242150r242151
132132CPUS += 8X300
133133CPUS += ALTO2
134134#CPUS += W65816
135CPUS += ARC
135136
136137#-------------------------------------------------
137138# specify available sound cores; some of these are

https://github.com/mamedev/mame/commit/34ce110109e5b541a25b1a23b332581073999df6

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