2009-11-24 20:22:45 +01:00
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/* mem.h --- interface to memory for M32C simulator.
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2013-01-01 07:41:43 +01:00
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Copyright (C) 2005-2013 Free Software Foundation, Inc.
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2009-11-24 20:22:45 +01:00
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Contributed by Red Hat, Inc.
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This file is part of the GNU simulators.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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enum mem_content_type {
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MC_UNINIT,
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MC_DATA,
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MC_PUSHED_PC,
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MC_NUM_TYPES
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};
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2010-07-28 23:58:22 +02:00
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enum mem_ptr_action
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{
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MPA_WRITING,
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MPA_READING,
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[include/opcode]
* rx.h (RX_Operand_Type): Add TwoReg.
(RX_Opcode_ID): Remove ediv and ediv2.
[opcodes]
* rx-decode.opc (SRR): New.
(rx_decode_opcode): Use it for movbi and movbir. Decode NOP2 (mov
r0,r0) and NOP3 (max r0,r0) special cases.
* rx-decode.c: Regenerate.
[sim/rx]
* rx.c (decode_cache_base): New.
(id_names): Remove ediv and edivu.
(optype_names): Add TwoReg.
(maybe_get_mem_page): New.
(rx_get_byte): Call it.
(get_op): Add TwoReg support.
(put_op): Likewise.
(PD, PS, PS2, GD, GS, GS2, DSZ, SSZ, S2SZ, US1, US2, OM): "opcode"
is a pointer now.
(DO_RETURN): New. We use longjmp to return an exception result.
(decode_opcode): Make opcode a pointer to the decode cache. Save
decoded opcode information and re-use. Call DO_RETURN instead of
return throughout. Remove ediv and edivu.
* mem.c (ptdc): New. Adds decode cache.
(rx_mem_ptr): Support it.
(rx_mem_decode_cache): New.
* mem.h (enum mem_ptr_action): add MPA_DECODE_CACHE.
(rx_mem_decode_cache): Declare.
* gdb-if.c (sim_resume): Add decode_opcode's setjmp logic here...
* main.c (main): ...and here. Use a fast loop if neither trace
nor disassemble is given.
* cpu.h (RX_MAKE_STEPPED, RX_MAKE_HIT_BREAK, RX_MAKE_EXITED,
RX_MAKE_STOPPED, RX_EXITED, RX_STOPPED): Adjust so that 0 is not a
valid code for anything.
2010-07-29 20:41:28 +02:00
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MPA_CONTENT_TYPE,
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MPA_DECODE_CACHE
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2010-07-28 23:58:22 +02:00
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};
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2009-11-24 20:22:45 +01:00
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void init_mem (void);
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void mem_usage_stats (void);
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unsigned long mem_usage_cycles (void);
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2010-07-28 23:58:22 +02:00
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/* rx_mem_ptr returns a pointer which is valid as long as the address
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requested remains within the same page. */
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#define PAGE_BITS 12
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#define PAGE_SIZE (1 << PAGE_BITS)
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#define NONPAGE_MASK (~(PAGE_SIZE-1))
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unsigned char *rx_mem_ptr (unsigned long address, enum mem_ptr_action action);
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[include/opcode]
* rx.h (RX_Operand_Type): Add TwoReg.
(RX_Opcode_ID): Remove ediv and ediv2.
[opcodes]
* rx-decode.opc (SRR): New.
(rx_decode_opcode): Use it for movbi and movbir. Decode NOP2 (mov
r0,r0) and NOP3 (max r0,r0) special cases.
* rx-decode.c: Regenerate.
[sim/rx]
* rx.c (decode_cache_base): New.
(id_names): Remove ediv and edivu.
(optype_names): Add TwoReg.
(maybe_get_mem_page): New.
(rx_get_byte): Call it.
(get_op): Add TwoReg support.
(put_op): Likewise.
(PD, PS, PS2, GD, GS, GS2, DSZ, SSZ, S2SZ, US1, US2, OM): "opcode"
is a pointer now.
(DO_RETURN): New. We use longjmp to return an exception result.
(decode_opcode): Make opcode a pointer to the decode cache. Save
decoded opcode information and re-use. Call DO_RETURN instead of
return throughout. Remove ediv and edivu.
* mem.c (ptdc): New. Adds decode cache.
(rx_mem_ptr): Support it.
(rx_mem_decode_cache): New.
* mem.h (enum mem_ptr_action): add MPA_DECODE_CACHE.
(rx_mem_decode_cache): Declare.
* gdb-if.c (sim_resume): Add decode_opcode's setjmp logic here...
* main.c (main): ...and here. Use a fast loop if neither trace
nor disassemble is given.
* cpu.h (RX_MAKE_STEPPED, RX_MAKE_HIT_BREAK, RX_MAKE_EXITED,
RX_MAKE_STOPPED, RX_EXITED, RX_STOPPED): Adjust so that 0 is not a
valid code for anything.
2010-07-29 20:41:28 +02:00
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#ifdef RXC_never
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RX_Opcode_Decoded **rx_mem_decode_cache (unsigned long address);
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#endif
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2010-07-28 23:58:22 +02:00
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2009-11-24 20:22:45 +01:00
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void mem_put_qi (int address, unsigned char value);
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void mem_put_hi (int address, unsigned short value);
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void mem_put_psi (int address, unsigned long value);
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void mem_put_si (int address, unsigned long value);
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void mem_put_blk (int address, void *bufptr, int nbytes);
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unsigned char mem_get_pc (int address);
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unsigned char mem_get_qi (int address);
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unsigned short mem_get_hi (int address);
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unsigned long mem_get_psi (int address);
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unsigned long mem_get_si (int address);
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void mem_get_blk (int address, void *bufptr, int nbytes);
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int sign_ext (int v, int bits);
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void mem_set_content_type (int address, enum mem_content_type type);
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void mem_set_content_range (int start_address, int end_address, enum mem_content_type type);
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enum mem_content_type mem_get_content_type (int address);
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