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comparison arm7dis/armdis.c @ 89:c5d52666d2eb

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armdis: BX/MRS/MSR decoding implemented
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sat, 29 Mar 2014 21:36:22 +0000
parents 691551f0635b
children f68d8e7a904f
comparison
equal deleted inserted replaced
88:691551f0635b 89:c5d52666d2eb
1 #include <sys/types.h> 1 #include <sys/types.h>
2 #include <stdio.h> 2 #include <stdio.h>
3 #include <stdlib.h> 3 #include <stdlib.h>
4 #include <string.h>
5 #include <strings.h>
4 6
5 extern char *binfilename; 7 extern char *binfilename;
6 extern u_char *filemap; 8 extern u_char *filemap;
7 extern unsigned disasm_len, base_vma; 9 extern unsigned disasm_len, base_vma;
8 10
105 107
106 static void 108 static void
107 dataproc_tstcmp_overlay(off, word) 109 dataproc_tstcmp_overlay(off, word)
108 unsigned off, word; 110 unsigned off, word;
109 { 111 {
110 printf("<dataproc overlay with S=0 for tst/cmp>\n"); 112 char msrmask[5], *cp;
113
114 if ((word & 0x0FFFFFF0) == 0x012FFF10) {
115 printf("bx%s\t%s\n", condition_decode[word>>28],
116 regnames[word&0xF]);
117 return;
118 } else if ((word & 0x0FBF0FFF) == 0x010F0000) {
119 printf("mrs%s\t%s, %cPSR\n", condition_decode[word>>28],
120 regnames[(word>>12)&0xF], word&0x400000 ? 'S' : 'C');
121 return;
122 } else if ((word & 0x0DB0F000) == 0x0120F000) {
123 if (!(word & 0x02000000) && (word & 0xFF0)) {
124 printf("<invalid MSR>\n");
125 return;
126 }
127 if (word & 0xF0000) {
128 cp = msrmask;
129 if (word & 0x80000)
130 *cp++ = 'f';
131 if (word & 0x40000)
132 *cp++ = 's';
133 if (word & 0x20000)
134 *cp++ = 'x';
135 if (word & 0x10000)
136 *cp++ = 'c';
137 *cp = '\0';
138 } else
139 strcpy(msrmask, "null");
140 printf("msr%s\t%cPSR_%s, ", condition_decode[word>>28],
141 word&0x400000 ? 'S' : 'C', msrmask);
142 dataproc_op2(word);
143 return;
144 }
145 printf("<invalid BX/MRS/MSR>\n");
111 } 146 }
112 147
113 static void 148 static void
114 dataproc(off, word) 149 dataproc(off, word)
115 unsigned off, word; 150 unsigned off, word;