diff options
Diffstat (limited to 'sim')
| -rw-r--r-- | sim/h8300/.Sanitize | 7 | ||||
| -rw-r--r-- | sim/h8300/inst.h | 71 | ||||
| -rw-r--r-- | sim/h8300/p1.c | 246 | ||||
| -rw-r--r-- | sim/h8300/p3.c | 78 | ||||
| -rw-r--r-- | sim/h8300/run.c | 57 | ||||
| -rw-r--r-- | sim/h8300/state.h | 86 |
6 files changed, 130 insertions, 415 deletions
diff --git a/sim/h8300/.Sanitize b/sim/h8300/.Sanitize index 414b8f1..0f596ce 100644 --- a/sim/h8300/.Sanitize +++ b/sim/h8300/.Sanitize @@ -29,12 +29,9 @@ ChangeLog Makefile.in configure.in h8300.mt -writecode.c +compile.c run.c -p1.c -p3.c -perifs.c -state.h +inst.h Things-to-lose: diff --git a/sim/h8300/inst.h b/sim/h8300/inst.h new file mode 100644 index 0000000..22914b4 --- /dev/null +++ b/sim/h8300/inst.h @@ -0,0 +1,71 @@ +#define DEBUG + +#define MPOWER 16 +#define MSIZE (1<<MPOWER) +#define CSIZE 1000 +/* Local register names */ +typedef enum +{ + R0, R1, R2, R3, R4, R5, R6, R7, + R_ZERO, + R_PC, + R_CCR, + R_HARD_0, + R_LAST, +} reg_type; + + +/* Structure used to describe addressing */ + +typedef struct +{ + int type; + int reg; + int literal; +} ea_type; + + + +typedef struct +{ + ea_type src; + ea_type dst; + int opcode; + int next_pc; + int oldpc; + int cycles; +#ifdef DEBUG +struct h8_opcode *op; +#endif +} + +decoded_inst; + + + +typedef struct +{ + int exception; + unsigned int regs[9]; + int pc; + int ccr; + + + unsigned char *memory; + unsigned short *cache_idx; + int cache_top; + int maximum; + int csize; + int mask; + + decoded_inst *cache; + int cycles; + int insts; + int ticks; + int compiles; +#ifdef ADEBUG + int stats[O_LAST]; +#endif +} + +cpu_state_type; diff --git a/sim/h8300/p1.c b/sim/h8300/p1.c deleted file mode 100644 index 2f5a88f..0000000 --- a/sim/h8300/p1.c +++ /dev/null @@ -1,246 +0,0 @@ -/* Interpreter fragment for the Hitachi H8/300 architecture simulator. - - Written by Steve Chamberlain of Cygnus Support. - sac@cygnus.com - - This file is part of H8/300 sim - - - THIS SOFTWARE IS NOT COPYRIGHTED - - Cygnus offers the following for use in the public domain. Cygnus - makes no warranty with regard to the software or it's performance - and the user accepts the software "AS IS" with all faults. - - CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO - THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - -*/ - -#include <stdio.h> -#include <stdlib.h> -#include <signal.h> -#include "state.h" - -#define V (v!=0) -#define C (c!=0) -#define N (n!=0) -#define Z (z!=0) - -#define SET_CCR(x) n = x & 0x8; v = x & 0x2; z = x & 0x4; c = x & 0x1;saved_state.ienable=x&0x80; -#define GET_CCR() ((N << 3) | (Z<<2) | (V<<1) | C) | ((!saved_state.ienable)<<7) - - - -static union -{ - short int i; - struct - { - char low; - char high; - } - - u; -} - -littleendian; - -static void -meminit () -{ - if (saved_state.mem == 0) - { - int tmp; - - saved_state.mem = (unsigned short *)calloc (1024, 64); - littleendian.i = 1; - /* initialze the array of pointers to byte registers */ - for (tmp = 0; tmp < 8; tmp++) - { - if (littleendian.u.high) - { - saved_state.bregp[tmp] = (unsigned char *) (saved_state.reg + tmp); - saved_state.bregp[tmp + 8] = saved_state.bregp[tmp] + 1; - } - else - { - saved_state.bregp[tmp + 8] = (unsigned char *) (saved_state.reg + tmp); - saved_state.bregp[tmp] = saved_state.bregp[tmp + 8] + 1; - } - } - - /* we keep two 256 sized pointers to byte regs, one for when we - want to look at the reg descibed by bits NNNNxxxx and one for - when we want to look at xxxxNNNN */ - for (tmp = 0; tmp < 256; tmp++) - { - saved_state.bregp_NNNNxxxx[tmp] = saved_state.bregp[(tmp >> 4) & 0xf]; - saved_state.bregp_xxxxNNNN[tmp] = saved_state.bregp[tmp & 0xf]; - } - /* We keep two 256 sized pointers to word regs, one for regs in - xNNNxxxx and one for regs in xxxxxNNNN */ - for (tmp = 0; tmp < 256; tmp++) - { - saved_state.wregp_xNNNxxxx[tmp] = &saved_state.reg[(tmp >> 4) & 0x7]; - saved_state.wregp_xxxxxNNN[tmp] = &saved_state.reg[tmp & 0x7]; - } - - saved_state.reg[HCHECK] = 10000000; /* don't check the hardware - often */ - } - -} - - -void -control_c (sig, code, scp, addr) - int sig; - int code; - char *scp; - char *addr; -{ - saved_state.exception = SIGINT; -} - -void -sim_store_register (reg, val) -int reg; -int val; -{ - saved_state.reg[reg] = val; -} - -void -sim_fetch_register (reg, buf) -int reg; -char *buf; -{ - meminit(); - buf[0] = saved_state.reg[reg] >> 8; - buf[1] = saved_state.reg[reg]; -} - -void -sim_write (to, from, len) - int to; - char *from; - int len; -{ - int i; - meminit (); - - for ( i = 0; i < len; i++) - SET_BYTE_MEM(to + i, from[i]); -} - -void -sim_read (from, to, len) - int from; - char *to; - - int len; -{ - int i; - meminit (); - for (i = 0; i < len; i++) { - to[i] = BYTE_MEM(from + i); - } -} - -int -sim_stop_signal () -{ - return saved_state.exception; -} - - void -load_timer_state_from_mem() -{ - - saved_state.reg[TIER] = BYTE_MEM(0xff90); - saved_state.reg[TCSR] = BYTE_MEM(0xff91); - saved_state.reg[FRC] = WORD_MEM(0xff92); - saved_state.reg[TCR] = BYTE_MEM(0xff96); - saved_state.reg[TOCR] = BYTE_MEM(0xff97); - - - if ((saved_state.reg[TOCR] & OCRS) == 0) - { - saved_state.reg[OCRA] = WORD_MEM(0xff94); - } - else - { - saved_state.reg[OCRB] = WORD_MEM(0xff94); - } -} - -void -store_timer_state_to_mem() -{ - - BYTE_MEM(0xff91) = saved_state.reg[TCSR]; - SET_WORD_MEM(0xff92, saved_state.reg[FRC]); -} - -void -sim_resume (step, sig) -int step; -int sig; -{ - int lval; - int tmp; - int b0; - int b1; - int checkfreq; - int ni; /* Number of insts to execute before checking hw state */ - unsigned char **blow; - unsigned char **bhigh; - unsigned short **wlow; - unsigned short **whigh; - unsigned short *npc; - int rn; - unsigned short int *reg; - unsigned char **bregp; - void (*prev) (); - unsigned short *pc; - - int srca; - int srcb; - int dst; - int cycles ; - - int n; - int v; - int z; - int c; - - -/* Set up pointers to areas */ - reg = saved_state.reg; - bregp = saved_state.bregp; - blow = saved_state.bregp_xxxxNNNN; - bhigh = saved_state.bregp_NNNNxxxx; - - wlow = saved_state.wregp_xxxxxNNN; - whigh = saved_state.wregp_xNNNxxxx; - - - prev = signal (SIGINT, control_c); - meminit(); -LOAD_INTERPRETER_STATE(); - if (step) - saved_state.exception = SIGTRAP; - else - { - saved_state.exception = sig; - } - do - { - b1 = pc[0]; - b0 = b1>> 8; - b1 &= 0xff; - - - diff --git a/sim/h8300/p3.c b/sim/h8300/p3.c deleted file mode 100644 index 921f191..0000000 --- a/sim/h8300/p3.c +++ /dev/null @@ -1,78 +0,0 @@ -/* Interpreter fragment for the Hitachi H8/300 architecture simulator. - - Written by Steve Chamberlain of Cygnus Support. - sac@cygnus.com - - This file is part of H8/300 sim - - - THIS SOFTWARE IS NOT COPYRIGHTED - - Cygnus offers the following for use in the public domain. Cygnus - makes no warranty with regard to the software or it's performance - and the user accepts the software "AS IS" with all faults. - - CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO - THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - -*/ - - movflags8: - n = dst & 0x80; - z = !(dst & 0xff); - v = 0; -goto next; - movflags16: - n = dst & 0x8000; - z = !(dst & 0xffff); - v = 0; -goto next; - aluflags8: - n = dst & 0x80; - z = !(dst & 0xff); - v = ((srca & 0x80) == (srcb & 0x80)) && ((srca & 0x80) != (dst & 0x80)); - c = dst & 0x100; - goto next; - aluflags16: - n = dst & 0x8000; - z = !(dst & 0xffff); - v = ((srca & 0x8000) == (srcb & 0x8000)) && ((srca & 0x8000) != (dst & 0x8000)); - c = dst & 0x10000; - goto next; - setflags:; -SET_CCR(tmp); - goto next; - logflags: - shiftflags: - v = 0; - incflags: - z = !(dst & 0xff); - n = dst & 0x80; -goto next; - next: ; -pc = npc; -if (ni > checkfreq) -{ - ni = 0; - SAVE_INTERPRETER_STATE(); - perifs(); - LOAD_INTERPRETER_STATE(); -#ifdef __GO32__ - if (kbhit()) - saved_state.exception = SIGINT; -#endif -} -ni++; -} while (!saved_state.exception); - - -SAVE_INTERPRETER_STATE(); -} - - -sim_info() -{ - int cycles = saved_state.reg[CYCLES]; - printf("cycles (v approximate) %10d\n", cycles); -} diff --git a/sim/h8300/run.c b/sim/h8300/run.c index a697465..a84d4fc 100644 --- a/sim/h8300/run.c +++ b/sim/h8300/run.c @@ -35,6 +35,18 @@ main (ac, av) char *name = ""; for (i = 1; i < ac; i++) { +<<<<<<< run.c + verbose ++; + } + else if (strcmp(av[i],"-t") == 0) + { + trace = 1; + } + else if (strcmp(av[i],"-c") == 0) + { + sim_csize(atoi(av[i+1])); + i++; +======= if (strcmp (av[i], "-v") == 0) { verbose = 1; @@ -48,15 +60,55 @@ main (ac, av) { name = av[i]; } +>>>>>>> 1.4 } +<<<<<<< run.c + else +======= if (verbose) +>>>>>>> 1.4 { +<<<<<<< run.c + name = av[i]; +======= printf ("run %s\n", name); +>>>>>>> 1.4 } +<<<<<<< run.c + } + if (verbose) + { + printf("run %s\n", name); + } + abfd = bfd_openr(name,"coff-h8300"); +======= abfd = bfd_openr (name, "coff-h8300"); +>>>>>>> 1.4 +<<<<<<< run.c + if (abfd) +======= if (abfd) +>>>>>>> 1.4 { +<<<<<<< run.c + if (bfd_check_format(abfd, bfd_object)) + { + + for (s = abfd->sections; s; s=s->next) + { + char *buffer = malloc(bfd_section_size(abfd,s)); + bfd_get_section_contents(abfd, s, buffer, 0, bfd_section_size(abfd,s)); + sim_write(s->vma, buffer, bfd_section_size(abfd,s)); + } + + start_address = bfd_get_start_address(abfd); + sim_store_register( + 9,start_address); + sim_resume(0,0); + if (verbose) + sim_info (verbose); +======= if (bfd_check_format (abfd, bfd_object)) { @@ -73,9 +125,14 @@ main (ac, av) sim_resume (0, 0); if (verbose) sim_info (); +>>>>>>> 1.4 +<<<<<<< run.c + return 0; +======= return 0; } +>>>>>>> 1.4 } return 1; diff --git a/sim/h8300/state.h b/sim/h8300/state.h deleted file mode 100644 index 5daf532..0000000 --- a/sim/h8300/state.h +++ /dev/null @@ -1,86 +0,0 @@ -/* - Written by Steve Chamberlain of Cygnus Support. - sac@cygnus.com - - This file is part of H8/300 sim - - - THIS SOFTWARE IS NOT COPYRIGHTED - - Cygnus offers the following for use in the public domain. Cygnus - makes no warranty with regard to the software or it's performance - and the user accepts the software "AS IS" with all faults. - - CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO - THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - -*/ -#include "../endian.h" -#define SET_WORD_MEM(x,y) {saved_state.mem[(x)>>1] = y;} -#define SET_BYTE_MEM(x,y) {BYTE_MEM(x)=y;} - -#define WORD_MEM(x) (saved_state.mem[(x)>>1]) -#define BYTE_MEM(x) (*(((char *)(saved_state.mem))+((x)^HOST_IS_LITTLE_ENDIAN))) - -#define CCR 8 -#define PC 9 -#define CYCLES 10 -#define HCHECK 11 -#define TIER 12 -#define TCSR 13 -#define FRC 14 -#define OCRA 15 -#define OCRB 16 -#define TCR 17 -#define TOCR 18 -#define ICRA 19 -#define NREG 20 -struct state -{ - unsigned short int reg[NREG]; - unsigned char *(bregp[16]); - unsigned char *(bregp_NNNNxxxx[256]); - unsigned char *(bregp_xxxxNNNN[256]); - unsigned short int *(wregp_xNNNxxxx[256]); - unsigned short int *(wregp_xxxxxNNN[256]); - int exception; - int ienable; - unsigned short *mem; -} - -saved_state; - - - -#define OCFA (1<<3) -#define OCFB (1<<2) -#define CCLRA (1<<0) -/* TCR bits */ -#define OCIEA (1<<3) -#define OCIEB (1<<2) -#define OVIE (1<<1) -#define OVF (1<<1) - -/* TOCR bits */ -#define OCRS (1<<4) - - -#ifdef LITTLE_ENDIAN_HOST -#define HOST_IS_LITTLE_ENDIAN 1 -#else -#define HOST_IS_LITTLE_ENDIAN 0 -#endif - -#define SAVE_INTERPRETER_STATE() \ -saved_state.reg[CYCLES] = cycles; \ -saved_state.reg[PC] = (pc - saved_state.mem) <<1; \ -saved_state.reg[CCR] = GET_CCR(); \ -store_timer_state_to_mem(); - -#define LOAD_INTERPRETER_STATE() \ - SET_CCR (saved_state.reg[CCR]); \ - checkfreq = saved_state.reg[HCHECK]; \ - pc = (saved_state.reg[PC]>>1) + saved_state.mem; \ - load_timer_state_from_mem(); \ - cycles=saved_state.reg[CYCLES]; |