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sh2d.c
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/*
* sh2d
* Bart Trzynadlowski, July 24, 2000
* Public domain
*
* Some changes by Björn Stenberg <[email protected]>
* $Id$
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define VERSION "0.2"
#define ZERO_F 0 /* 0 format */
#define N_F 1 /* n format */
#define M_F 2 /* m format */
#define NM_F 3 /* nm format */
#define MD_F 4 /* md format */
#define ND4_F 5 /* nd4 format */
#define NMD_F 6 /* nmd format */
#define D_F 7 /* d format */
#define D12_F 8 /* d12 format */
#define ND8_F 9 /* nd8 format */
#define I_F 10 /* i format */
#define NI_F 11 /* ni format */
typedef struct
{
int format;
const char *mnem;
unsigned short mask; /* mask used to obtain opcode bits */
unsigned short bits; /* opcode bits */
int dat; /* specific data for situation */
int sh2; /* SH-2 specific */
} i_descr;
/* register name lookup added by [email protected] 2001-12-09 */
char* regname[] =
{
/* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
"","","","","","","","","","","","","","","","", /* 0 */
"","","","","","","","","","","","","","","","", /* 10 */
"","","","","","","","","","","","","","","","", /* 20 */
"","","","","","","","","","","","","","","","", /* 30 */
"","","","","","","","","","","","","","","","", /* 40 */
"","","","","","","","","","","","","","","","", /* 50 */
"","","","","","","","","","","","","","","","", /* 60 */
"","","","","","","","","","","","","","","","", /* 70 */
"","","","","","","","","","","","","","","","", /* 80 */
"","","","","","","","","","","","","","","","", /* 90 */
"","","","","","","","","","","","","","","","", /* a0 */
"","","","","","","","","","","","","","","","", /* b0 */
"SMR0","BRR0","SCR0","TDR0","SSR0","RDR0","","", /* c0 */
"SMR1","BRR1","SCR1","TDR1","SSR1","RDR1","","", /* c8 */
"","","","","","","","","","","","","","","","", /* d0 */
"ADDRAH","ADDRAL","ADDRBH","ADDRBL", /* e0 */
"ADDRCH","ADDRCL","ADDRDH","ADDRDL", /* e4 */
"ADCSR","ADCR","","","","","","", /* e8 */
"","","","","","","","","","","","","","","","", /* f0 */
"TSTR","TSNC","TMDR","TFCR","TCR0","TIOR0","TIER0","TSR0", /* 100 */
"TCNT0","!","GRA0","!","GRB0","!","TCR1","TIORL", /* 108 */
"TIERI","TSR1","TCNT1","!","GRA1","!","GRB1","!", /* 110 */
"TCR2","TIOR2","TIER2","TSR2","TCNT2","!","GRA2","!", /* 118 */
"GRB2","!","TCR3","TIOR3","TIER3","TSR3","TCNT3","!", /* 120 */
"GRA3","!","GRB3","!","BRA3","!","BRB3","!", /* 128 */
"","TOCR","TCR4","TIOR4","TIER4","TSR4","TCNT4","!", /* 130 */
"GRA4","!","GRB4","!","BRA4","!","BRB4","!", /* 138 */
"SAR0","!","!","!","DAR0","!","!","!", /* 140 */
"DMAOR","!","TCR0","!","","","CHCR0","!", /* 148 */
"SAR1","!","!","!","DAR1","!","!","!", /* 150 */
"","","TCR1","!","","","CHCR1","!", /* 158 */
"SAR2","!","!","!","DAR2","!","!","!", /* 160 */
"","","TCR2","!","","","CHCR2","!", /* 168 */
"SAR3","!","!","!","DAR3","!","!","!", /* 170 */
"","","TCR3","!","","","CHCR3","!", /* 178 */
"","","","","IPRA","!","IPRB","!", /* 180 */
"IPRC","!","IPRD","!","IPRE","!","ICR","!", /* 188 */
"BARH","!","BARL","!","BAMRH","!","BAMRL","!", /* 190 */
"BBR","!","","","","","","", /* 198 */
"BCR","!","WCR1","!","WCR2","!","WCR3","!", /* 1a0 */
"DCR","!","PCR","!","RCR","!","RTCSR","!", /* 1a8 */
"RTCNT","!","RTCOR","!","","","","", /* 1b0 */
"TCSR","TCNT","","RSTCSR","SBYCR","","","", /* 1b8 */
"PADR","!","PBDR","!","PAIOR","!","PBIOR","!", /* 1c0 */
"PACR1","!","PACR2","!","PBCR1","!","PBCR2","!", /* 1c8 */
"PCDR","!","","","","","","","","","","","","","","", /* 1d0 */
"","","","","","","","","","","","","","","CASCR","!", /* 1e0 */
"TPMR","TPCR","NDERB","NDERA","NDRB","NDRA","NDRB","NDRA", /* 1f0 */
"","","","","","","",""
};
i_descr tab[] =
{
{ ZERO_F, "clrt", 0xffff, 0x8, 0, 0 },
{ ZERO_F, "clrmac", 0xffff, 0x28, 0, 0 },
{ ZERO_F, "div0u", 0xffff, 0x19, 0, 0 },
{ ZERO_F, "nop", 0xffff, 0x9, 0, 0 },
{ ZERO_F, "rte", 0xffff, 0x2b, 0, 0 },
{ ZERO_F, "rts", 0xffff, 0xb, 0, 0 },
{ ZERO_F, "sett", 0xffff, 0x18, 0, 0 },
{ ZERO_F, "sleep", 0xffff, 0x1b, 0, 0 },
{ N_F, "cmp/pl\tr%d", 0xf0ff, 0x4015, 0, 0 },
{ N_F, "cmp/pz\tr%d", 0xf0ff, 0x4011, 0, 0 },
{ N_F, "dt\tr%d", 0xf0ff, 0x4010, 0, 1 },
{ N_F, "movt\tr%d", 0xf0ff, 0x0029, 0, 0 },
{ N_F, "rotl\tr%d", 0xf0ff, 0x4004, 0, 0 },
{ N_F, "rotr\tr%d", 0xf0ff, 0x4005, 0, 0 },
{ N_F, "rotcl\tr%d", 0xf0ff, 0x4024, 0, 0 },
{ N_F, "rotcr\tr%d", 0xf0ff, 0x4025, 0, 0 },
{ N_F, "shal\tr%d", 0xf0ff, 0x4020, 0, 0 },
{ N_F, "shar\tr%d", 0xf0ff, 0x4021, 0, 0 },
{ N_F, "shll\tr%d", 0xf0ff, 0x4000, 0, 0 },
{ N_F, "shlr\tr%d", 0xf0ff, 0x4001, 0, 0 },
{ N_F, "shll2\tr%d", 0xf0ff, 0x4008, 0, 0 },
{ N_F, "shlr2\tr%d", 0xf0ff, 0x4009, 0, 0 },
{ N_F, "shll8\tr%d", 0xf0ff, 0x4018, 0, 0 },
{ N_F, "shlr8\tr%d", 0xf0ff, 0x4019, 0, 0 },
{ N_F, "shll16\tr%d", 0xf0ff, 0x4028, 0, 0 },
{ N_F, "shlr16\tr%d", 0xf0ff, 0x4029, 0, 0 },
{ N_F, "stc\tsr,r%d", 0xf0ff, 0x0002, 0, 0 },
{ N_F, "stc\tgbr,r%d", 0xf0ff, 0x0012, 0, 0 },
{ N_F, "stc\tvbr,r%d", 0xf0ff, 0x0022, 0, 0 },
{ N_F, "sts\tmach,r%d", 0xf0ff, 0x000a, 0, 0 },
{ N_F, "sts\tmacl,r%d", 0xf0ff, 0x001a, 0, 0 },
{ N_F, "sts\tpr,r%d", 0xf0ff, 0x002a, 0, 0 },
{ N_F, "tas.b\t@r%d", 0xf0ff, 0x401b, 0, 0 },
{ N_F, "stc.l\tsr,@-r%d", 0xf0ff, 0x4003, 0, 0 },
{ N_F, "stc.l\tgbr,@-r%d", 0xf0ff, 0x4013, 0, 0 },
{ N_F, "stc.l\tvbr,@-r%d", 0xf0ff, 0x4023, 0, 0 },
{ N_F, "sts.l\tmach,@-r%d", 0xf0ff, 0x4002, 0, 0 },
{ N_F, "sts.l\tmacl,@-r%d", 0xf0ff, 0x4012, 0, 0 },
{ N_F, "sts.l\tpr,@-r%d", 0xf0ff, 0x4022, 0, 0 },
{ M_F, "ldc\tr%d,sr", 0xf0ff, 0x400e, 0, 0 },
{ M_F, "ldc\tr%d,gbr", 0xf0ff, 0x401e, 0, 0 },
{ M_F, "ldc\tr%d,vbr", 0xf0ff, 0x402e, 0, 0 },
{ M_F, "lds\tr%d,mach", 0xf0ff, 0x400a, 0, 0 },
{ M_F, "lds\tr%d,macl", 0xf0ff, 0x401a, 0, 0 },
{ M_F, "lds\tr%d,pr", 0xf0ff, 0x402a, 0, 0 },
{ M_F, "jmp\t@r%d", 0xf0ff, 0x402b, 0, 0 },
{ M_F, "jsr\t@r%d", 0xf0ff, 0x400b, 0, 0 },
{ M_F, "ldc.l\t@r%d+,sr", 0xf0ff, 0x4007, 0, 0 },
{ M_F, "ldc.l\t@r%d+,gbr", 0xf0ff, 0x4017, 0, 0 },
{ M_F, "ldc.l\t@r%d+,vbr", 0xf0ff, 0x4027, 0, 0 },
{ M_F, "lds.l\t@r%d+,mach", 0xf0ff, 0x4006, 0, 0 },
{ M_F, "lds.l\t@r%d+,macl", 0xf0ff, 0x4016, 0, 0 },
{ M_F, "lds.l\t@r%d+,pr", 0xf0ff, 0x4026, 0, 0 },
{ M_F, "braf\tr%d", 0xf0ff, 0x0023, 0, 1 },
{ M_F, "bsrf\tr%d", 0xf0ff, 0x0003, 0, 1 },
{ NM_F, "add\tr%d,r%d", 0xf00f, 0x300c, 0, 0 },
{ NM_F, "addc\tr%d,r%d", 0xf00f, 0x300e, 0, 0 },
{ NM_F, "addv\tr%d,r%d", 0xf00f, 0x300f, 0, 0 },
{ NM_F, "and\tr%d,r%d", 0xf00f, 0x2009, 0, 0 },
{ NM_F, "cmp/eq\tr%d,r%d", 0xf00f, 0x3000, 0, 0 },
{ NM_F, "cmp/hs\tr%d,r%d", 0xf00f, 0x3002, 0, 0 },
{ NM_F, "cmp/ge\tr%d,r%d", 0xf00f, 0x3003, 0, 0 },
{ NM_F, "cmp/hi\tr%d,r%d", 0xf00f, 0x3006, 0, 0 },
{ NM_F, "cmp/gt\tr%d,r%d", 0xf00f, 0x3007, 0, 0 },
{ NM_F, "cmp/str\tr%d,r%d", 0xf00f, 0x200c, 0, 0 },
{ NM_F, "div1\tr%d,r%d", 0xf00f, 0x3004, 0, 0 },
{ NM_F, "div0s\tr%d,r%d", 0xf00f, 0x2007, 0, 0 },
{ NM_F, "dmuls.l\tr%d,r%d", 0xf00f, 0x300d, 0, 1 },
{ NM_F, "dmulu.l\tr%d,r%d", 0xf00f, 0x3005, 0, 1 },
{ NM_F, "exts.b\tr%d,r%d", 0xf00f, 0x600e, 0, 0 },
{ NM_F, "exts.w\tr%d,r%d", 0xf00f, 0x600f, 0, 0 },
{ NM_F, "extu.b\tr%d,r%d", 0xf00f, 0x600c, 0, 0 },
{ NM_F, "extu.w\tr%d,r%d", 0xf00f, 0x600d, 0, 0 },
{ NM_F, "mov\tr%d,r%d", 0xf00f, 0x6003, 0, 0 },
{ NM_F, "mul.l\tr%d,r%d", 0xf00f, 0x0007, 0, 1 },
{ NM_F, "muls.w\tr%d,r%d", 0xf00f, 0x200f, 0, 0 },
{ NM_F, "mulu.w\tr%d,r%d", 0xf00f, 0x200e, 0, 0 },
{ NM_F, "neg\tr%d,r%d", 0xf00f, 0x600b, 0, 0 },
{ NM_F, "negc\tr%d,r%d", 0xf00f, 0x600a, 0, 0 },
{ NM_F, "not\tr%d,r%d", 0xf00f, 0x6007, 0, 0 },
{ NM_F, "or\tr%d,r%d", 0xf00f, 0x200b, 0, 0 },
{ NM_F, "sub\tr%d,r%d", 0xf00f, 0x3008, 0, 0 },
{ NM_F, "subc\tr%d,r%d", 0xf00f, 0x300a, 0, 0 },
{ NM_F, "subv\tr%d,r%d", 0xf00f, 0x300b, 0, 0 },
{ NM_F, "swap.b\tr%d,r%d", 0xf00f, 0x6008, 0, 0 },
{ NM_F, "swap.w\tr%d,r%d", 0xf00f, 0x6009, 0, 0 },
{ NM_F, "tst\tr%d,r%d", 0xf00f, 0x2008, 0, 0 },
{ NM_F, "xor\tr%d,r%d", 0xf00f, 0x200a, 0, 0 },
{ NM_F, "xtrct\tr%d,r%d", 0xf00f, 0x200d, 0, 0 },
{ NM_F, "mov.b\tr%d,@r%d", 0xf00f, 0x2000, 0, 0 },
{ NM_F, "mov.w\tr%d,@r%d", 0xf00f, 0x2001, 0, 0 },
{ NM_F, "mov.l\tr%d,@r%d", 0xf00f, 0x2002, 0, 0 },
{ NM_F, "mov.b\t@r%d,r%d", 0xf00f, 0x6000, 0, 0 },
{ NM_F, "mov.w\t@r%d,r%d", 0xf00f, 0x6001, 0, 0 },
{ NM_F, "mov.l\t@r%d,r%d", 0xf00f, 0x6002, 0, 0 },
{ NM_F, "mac.l\t@r%d+,@r%d+", 0xf00f, 0x000f, 0, 1 },
{ NM_F, "mac.w\t@r%d+,@r%d+", 0xf00f, 0x400f, 0, 0 },
{ NM_F, "mov.b\t@r%d+,r%d", 0xf00f, 0x6004, 0, 0 },
{ NM_F, "mov.w\t@r%d+,r%d", 0xf00f, 0x6005, 0, 0 },
{ NM_F, "mov.l\t@r%d+,r%d", 0xf00f, 0x6006, 0, 0 },
{ NM_F, "mov.b\tr%d,@-r%d", 0xf00f, 0x2004, 0, 0 },
{ NM_F, "mov.w\tr%d,@-r%d", 0xf00f, 0x2005, 0, 0 },
{ NM_F, "mov.l\tr%d,@-r%d", 0xf00f, 0x2006, 0, 0 },
{ NM_F, "mov.b\tr%d,@(r0,r%d)", 0xf00f, 0x0004, 0, 0 },
{ NM_F, "mov.w\tr%d,@(r0,r%d)", 0xf00f, 0x0005, 0, 0 },
{ NM_F, "mov.l\tr%d,@(r0,r%d)", 0xf00f, 0x0006, 0, 0 },
{ NM_F, "mov.b\t@(r0,r%d),r%d", 0xf00f, 0x000c, 0, 0 },
{ NM_F, "mov.w\t@(r0,r%d),r%d", 0xf00f, 0x000d, 0, 0 },
{ NM_F, "mov.l\t@(r0,r%d),r%d", 0xf00f, 0x000e, 0, 0 },
{ MD_F, "mov.b\t@(0x%03X,r%d), r0", 0xff00, 0x8400, 0, 0 },
{ MD_F, "mov.w\t@(0x%03X,r%d), r0", 0xff00, 0x8500, 0, 0 },
{ ND4_F, "mov.b\tr0,@(0x%03X,r%d)", 0xff00, 0x8000, 0, 0 },
{ ND4_F, "mov.w\tr0,@(0x%03X,r%d)", 0xff00, 0x8100, 0, 0 },
{ NMD_F, "mov.l\tr%d,@(0x%03X,r%d)", 0xf000, 0x1000, 0,0 },
{ NMD_F, "mov.l\t@(0x%03X,r%d),r%d", 0xf000, 0x5000, 0,0 },
{ D_F, "mov.b\tr0,@(0x%03X,gbr)", 0xff00, 0xc000, 1, 0 },
{ D_F, "mov.w\tr0,@(0x%03X,gbr)", 0xff00, 0xc100, 2, 0 },
{ D_F, "mov.l\tr0,@(0x%03X,gbr)", 0xff00, 0xc200, 4, 0 },
{ D_F, "mov.b\t@(0x%03X,gbr),r0", 0xff00, 0xc400, 1, 0 },
{ D_F, "mov.w\t@(0x%03X,gbr),r0", 0xff00, 0xc500, 2, 0 },
{ D_F, "mov.l\t@(0x%03X,gbr),r0", 0xff00, 0xc600, 4, 0 },
{ D_F, "mova\t@(0x%03X,pc),r0", 0xff00, 0xc700, 4, 0 },
{ D_F, "bf\t0x%08X", 0xff00, 0x8b00, 5, 0 },
{ D_F, "bf/s\t0x%08X", 0xff00, 0x8f00, 5, 1 },
{ D_F, "bt\t0x%08X", 0xff00, 0x8900, 5, 0 },
{ D_F, "bt/s\t0x%08X", 0xff00, 0x8d00, 5, 1 },
{ D12_F, "bra\t0x%08X", 0xf000, 0xa000, 0, 0 },
{ D12_F, "bsr\t0x%08X", 0xf000, 0xb000, 0, 0 },
{ ND8_F, "mov.w\t@(0x%03X,pc),r%d", 0xf000, 0x9000, 2, 0 },
{ ND8_F, "mov.l\t@(0x%03X,pc),r%d", 0xf000, 0xd000, 4, 0 },
{ I_F, "and.b\t#0x%02X,@(r0,gbr)", 0xff00, 0xcd00, 0,0 },
{ I_F, "or.b\t#0x%02X,@(r0,gbr)", 0xff00, 0xcf00, 0,0 },
{ I_F, "tst.b\t#0x%02X,@(r0,gbr)", 0xff00, 0xcc00, 0,0 },
{ I_F, "xor.b\t#0x%02X,@(r0,gbr)", 0xff00, 0xce00, 0,0 },
{ I_F, "and\t#0x%02X,r0", 0xff00, 0xc900, 0, 0 },
{ I_F, "cmp/eq\t#0x%02X,r0", 0xff00, 0x8800, 0, 0 },
{ I_F, "or\t#0x%02X,r0", 0xff00, 0xcb00, 0, 0 },
{ I_F, "tst\t#0x%02X,r0", 0xff00, 0xc800, 0, 0 },
{ I_F, "xor\t#0x%02X,r0", 0xff00, 0xca00, 0, 0 },
{ I_F, "trapa\t#0x%X", 0xff00, 0xc300, 0, 0 },
{ NI_F, "add\t#0x%02X,r%d", 0xf000, 0x7000, 0, 0 },
{ NI_F, "mov\t#0x%02X,r%d", 0xf000, 0xe000, 0, 0 },
{ 0, NULL, 0, 0, 0, 0 }
};
int FindOption(char *option, int p, int h, int u, int argc, char **argv)
{
static int t[] = { 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0 };
int i;
char *c;
if (argc > 128)
argc = 128; /* maximum this function can handle is 128 */
/*
* if p = 1 and h = 0 will find option and return decimal value of
* argv[i+1], if h = 1 will read it as hex.
* if p = 0 then it will return index of option in argv[], 0 not found
* if u = 1 will return index of first occurance of untouched option
*/
if (u) /* find first untouched element */
{
for (i = 1; i < argc; i++)
{
if (!t[i]) /* 0 indicates untouched */
return i;
}
return 0;
}
if (p) /* find option and return integer value following it */
{
for (i = 1; i < argc; i++)
{
if (strcmp(argv[i], option) == 0) /* found */
{
if (i >= argc) /* bounds! */
return 0;
t[i + 1] = t[i] = 1; /* touched */
if (!h)
return atoi(argv[i + 1]);
else
return strtoul(argv[i + 1], &c, 16);
}
}
return 0; /* no match */
}
else /* find option and return position */
{
for (i = 1; i < argc; i++)
{
if (strcmp(argv[i], option) == 0)
{
t[i] = 1;
return i; /* found! return position */
}
}
return 0;
}
}
/*
* SH2Disasm(): SH-1/SH-2 disassembler routine. If mode = 0 then SH-2 mode,
* otherwise SH-1 mode
*/
void SH2Disasm(unsigned v_addr, unsigned char *p_addr, int mode, char *m_addr)
{
int i;
unsigned short op;
op = (unsigned short) (*p_addr << 8) | *(p_addr + 1);
printf("0x%08X: 0x%04X\t", v_addr, op);
if (m_addr[0]==ND8_F)
{
if (m_addr[2]==-1)
{
unsigned int tmp = (op << 16) | ((unsigned int) (p_addr [2] << 8) | p_addr[3]);
printf(".long\t0x%08X\t; 0x%08X",tmp,v_addr - (unsigned)m_addr[1]);
}
else
printf(".short\t0x%08X\t; 0x%08X",op,v_addr - (unsigned)m_addr[1]);
}
else if (m_addr[0] != -1)
{
for (i = 0; tab[i].mnem != NULL; i++) /* 0 format */
{
if ((op & tab[i].mask) == tab[i].bits)
{
if (tab[i].sh2 && mode) /* if SH-1 mode, no SH-2 */
printf("???");
else if (tab[i].format == ZERO_F)
printf("%s", tab[i].mnem);
else if (tab[i].format == N_F)
printf(tab[i].mnem, (op >> 8) & 0xf);
else if (tab[i].format == M_F)
printf(tab[i].mnem, (op >> 8) & 0xf);
else if (tab[i].format == NM_F)
printf(tab[i].mnem, (op >> 4) & 0xf,
(op >> 8) & 0xf);
else if (tab[i].format == MD_F)
{
if (op & 0x100)
printf(tab[i].mnem, (op & 0xf) * 2,
(op >> 4) & 0xf);
else
printf(tab[i].mnem, op & 0xf,
(op >> 4) & 0xf);
}
else if (tab[i].format == ND4_F)
{
if (op & 0x100)
printf(tab[i].mnem, (op & 0xf) * 2,
(op >> 4) & 0xf);
else
printf(tab[i].mnem, (op & 0xf),
(op >> 4) & 0xf);
}
else if (tab[i].format == NMD_F)
{
if ((op & 0xf000) == 0x1000)
printf(tab[i].mnem, (op >> 4) & 0xf,
(op & 0xf) * 4,
(op >> 8) & 0xf);
else
printf(tab[i].mnem, (op & 0xf) * 4,
(op >> 4) & 0xf,
(op >> 8) & 0xf);
}
else if (tab[i].format == D_F)
{
if (tab[i].dat <= 4)
{
if ((op & 0xff00) == 0xc700)
{
printf(tab[i].mnem,
(op & 0xff) *
tab[i].dat + 4);
printf("\t; 0x%08X",
(op & 0xff) *
tab[i].dat + 4 +
v_addr);
}
else
printf(tab[i].mnem,
(op & 0xff) *
tab[i].dat);
}
else
{
if (op & 0x80) /* sign extend */
printf(tab[i].mnem,
(((op & 0xff) +
0xffffff00) * 2) +
v_addr + 4);
else
printf(tab[i].mnem,
((op & 0xff) * 2) +
v_addr + 4);
}
}
else if (tab[i].format == D12_F)
{
if (op & 0x800) /* sign extend */
printf(tab[i].mnem,
((op & 0xfff) + 0xfffff000) * 2
+ v_addr + 4);
else
printf(tab[i].mnem, (op & 0xfff) * 2 +
v_addr + 4);
}
else if (tab[i].format == ND8_F)
{
int imm = (op & 0xff) * tab[i].dat + 4;
if ((op & 0xf000) == 0x9000) /* .W */
{
int dat = (unsigned short) (*(imm + p_addr) << 8) | *(imm + p_addr + 1);
m_addr[imm+0] = ND8_F; /* this couldn't be an instruction so mark it ! */
m_addr[imm+1] = imm;
printf(tab[i].mnem,
imm,
(op >> 8) & 0xf);
printf("\t; 0x%08X (0x%04X)",
imm + v_addr, dat);
}
else /* .L */
{
unsigned char *b_addr = (unsigned char *)((intptr_t)p_addr & ~3);
int dat = (unsigned int) (*(imm + b_addr) << 24) | (*(imm + b_addr + 1) << 16)
| (*(imm + b_addr + 2) << 8) | *(imm + b_addr + 3) ;
/* SH-1 register name lookup */
char* str = "";
if ( (dat & 0xfffffe00) == 0x05fffe00 )
str = regname[dat & 0x1ff];
m_addr[imm+(b_addr-p_addr)+0] = ND8_F; /* this couldn't be an instruction so mark it ! */
m_addr[imm+(b_addr-p_addr)+1] = imm;
m_addr[imm+(b_addr-p_addr)+2] = -1;
printf(tab[i].mnem,
imm,
(op >> 8) & 0xf);
printf("\t; 0x%08X (0x%08X) %s",
imm + (v_addr & 0xfffffffc), dat, str);
}
}
else if (tab[i].format == I_F)
printf(tab[i].mnem, op & 0xff);
else if (tab[i].format == NI_F)
printf(tab[i].mnem, op & 0xff, (op >> 8) &
0xf);
else
printf("???");
printf("\n");
return;
}
}
printf("???");
}
printf("\n");
}
void ShowHelp()
{
printf("sh2d Version %s by Bart Trzynadlowski: A Free SH-1/SH-2 "
"Disassembler\n", VERSION);
printf("Usage: sh2d <file> [options]\n");
printf("Options: -?,-h Show this help text\n");
printf(" -s # Start offset (hexadecimal)\n");
printf(" -l # Number of bytes (decimal)\n");
printf(" -o # Set origin (hexadecimal)\n");
printf(" -sh1 SH-1 disassembly only\n");
printf(" -sh2 SH-2 disassembly (default)\n");
exit(0);
}
int main(int argc, char **argv)
{
FILE *fp;
long fsize, file, mode;
unsigned start, len, calc_len = 0, org, do_org, i, j = 0;
char *buffer;
char *mark;
if (argc == 1) /* show help */
ShowHelp();
if (FindOption("-?", 0, 0, 0, argc, argv) ||
FindOption("-h", 0, 0, 0, argc, argv))
ShowHelp();
if (FindOption("-sh1", 0, 0, 0, argc, argv))
mode = 1; /* SH-1 mode */
else
mode = 0; /* SH-2 mode */
if (FindOption("-sh2", 0, 0, 0, argc, argv))
mode = 0; /* SH-2 mode */
start = FindOption("-s", 1, 1, 0, argc, argv);
org = FindOption("-o", 1, 1, 0, argc, argv);
if (!(len = FindOption("-l", 1, 0, 0, argc, argv)))
{
if (FindOption("-l", 0, 0, 0, argc, argv))
return 0; /* -l was actually specified w/ 0 */
calc_len = 1; /* no -l, calculate length */
}
if (FindOption("-o", 0, 0, 0, argc, argv))
do_org = 1; /* -o was actually 0 */
else
do_org = 0; /* there was no -o, ignore the org variable */
if (!(file = FindOption(NULL, 0, 0, 1, argc, argv)))
{
fprintf(stderr, "sh2d: No input file specified. Try "
"\"sh2d -h\" for usage instructions\n");
exit(1);
}
if ((fp = fopen(argv[file], "rb")) == NULL)
{
fprintf(stderr, "sh2d: Failed to open file: %s\n",
argv[file]);
exit(1);
}
fseek(fp, 0, SEEK_END);
fsize = ftell(fp);
rewind(fp);
if ((buffer = (char *) calloc(fsize * 2, sizeof(unsigned short)))
== NULL)
{
fprintf(stderr, "sh2d: Not enough memory to load input "
"file: %s, %lu bytes\n", argv[file], fsize);
exit(1);
}
fread(buffer, sizeof(unsigned char), fsize, fp);
fclose(fp);
if (calc_len)
len = fsize - start;
mark = buffer + fsize;
for (i = start; i < (unsigned) fsize && j < len; i += 2)
{
if (do_org)
{
SH2Disasm(org, (unsigned char*)&buffer[i], mode, &mark[i]);
org += 2;
}
else
SH2Disasm(i, (unsigned char *)&buffer[i], mode, &mark[i]);
j += 2;
}
return 0;
}