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-rw-r--r--src/third_party/libdisasm/x86_format.c1430
1 files changed, 1430 insertions, 0 deletions
diff --git a/src/third_party/libdisasm/x86_format.c b/src/third_party/libdisasm/x86_format.c
new file mode 100644
index 00000000..b5b47e30
--- /dev/null
+++ b/src/third_party/libdisasm/x86_format.c
@@ -0,0 +1,1430 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "libdis.h"
+#include <inttypes.h>
+
+#ifdef _MSC_VER
+ #define snprintf _snprintf
+ #define inline __inline
+#endif
+
+
+/*
+ * concatenation macros. STRNCATF concatenates a format string, buf
+ * only with one argument.
+ */
+#define STRNCAT( buf, str, len ) do { \
+ int _i = strlen(str), _blen = strlen(buf), _len = len - 1; \
+ if ( len ) { \
+ strncat( buf, str, _len ); \
+ if ( _len <= _i ) { \
+ buf[_blen+_len] = '\0'; \
+ len = 0; \
+ } else { \
+ len -= _i; \
+ } \
+ } \
+} while( 0 )
+
+#define STRNCATF( buf, fmt, data, len ) do { \
+ char _tmp[MAX_OP_STRING]; \
+ \
+ snprintf( _tmp, sizeof _tmp, fmt, data ); \
+ STRNCAT( buf, _tmp, len ); \
+} while( 0 )
+
+
+#define PRINT_DISPLACEMENT( ea ) do { \
+ if ( ea->disp_size && ea->disp ) { \
+ if ( ea->disp_sign ) { \
+ STRNCATF( buf, "-0x%" PRIX32, -ea->disp, len ); \
+ } else { \
+ STRNCATF( buf, "0x%" PRIX32, ea->disp, len ); \
+ } \
+ } \
+} while( 0 )
+
+static char *prefix_strings[] = {
+ "", /* no prefix */
+ "repz ", /* the trailing spaces make it easy to prepend to mnemonic */
+ "repnz ",
+ "lock ",
+ "branch delay " /* unused in x86 */
+};
+
+static int format_insn_prefix_str( enum x86_insn_prefix prefix, char *buf,
+ int len ) {
+
+ int len_orig = len;
+
+ /* concat all prefix strings */
+ if ( prefix & 1 ) { STRNCAT( buf, prefix_strings[1], len ); }
+ if ( prefix & 2 ) { STRNCAT( buf, prefix_strings[2], len ); }
+ if ( prefix & 4 ) { STRNCAT( buf, prefix_strings[3], len ); }
+ if ( prefix & 8 ) { STRNCAT( buf, prefix_strings[4], len ); }
+
+ /* return the number of characters added */
+ return (len_orig - len);
+}
+
+/*
+ * sprint's an operand's data to string str.
+ */
+static void get_operand_data_str( x86_op_t *op, char *str, int len ){
+
+ if ( op->flags & op_signed ) {
+ switch ( op->datatype ) {
+ case op_byte:
+ snprintf( str, len, "%" PRId8, op->data.sbyte );
+ return;
+ case op_word:
+ snprintf( str, len, "%" PRId16, op->data.sword );
+ return;
+ case op_qword:
+ snprintf( str, len, "%" PRId64, op->data.sqword );
+ return;
+ default:
+ snprintf( str, len, "%" PRId32, op->data.sdword );
+ return;
+ }
+ }
+
+ //else
+ switch ( op->datatype ) {
+ case op_byte:
+ snprintf( str, len, "0x%02" PRIX8, op->data.byte );
+ return;
+ case op_word:
+ snprintf( str, len, "0x%04" PRIX16, op->data.word );
+ return;
+ case op_qword:
+ snprintf( str, len, "0x%08" PRIX64,op->data.sqword );
+ return;
+ default:
+ snprintf( str, len, "0x%08" PRIX32, op->data.dword );
+ return;
+ }
+}
+
+/*
+ * sprints register types to a string. the register types can be ORed
+ * together.
+ */
+static void get_operand_regtype_str( int regtype, char *str, int len )
+{
+ static struct {
+ char *name;
+ int value;
+ } operand_regtypes[] = {
+ {"reg_gen" , 0x00001},
+ {"reg_in" , 0x00002},
+ {"reg_out" , 0x00004},
+ {"reg_local" , 0x00008},
+ {"reg_fpu" , 0x00010},
+ {"reg_seg" , 0x00020},
+ {"reg_simd" , 0x00040},
+ {"reg_sys" , 0x00080},
+ {"reg_sp" , 0x00100},
+ {"reg_fp" , 0x00200},
+ {"reg_pc" , 0x00400},
+ {"reg_retaddr", 0x00800},
+ {"reg_cond" , 0x01000},
+ {"reg_zero" , 0x02000},
+ {"reg_ret" , 0x04000},
+ {"reg_src" , 0x10000},
+ {"reg_dest" , 0x20000},
+ {"reg_count" , 0x40000},
+ {NULL, 0}, //end
+ };
+
+ unsigned int i;
+
+ memset( str, 0, len );
+
+ //go thru every type in the enum
+ for ( i = 0; operand_regtypes[i].name; i++ ) {
+ //skip if type is not set
+ if(! (regtype & operand_regtypes[i].value) )
+ continue;
+
+ //not the first time around
+ if( str[0] ) {
+ STRNCAT( str, " ", len );
+ }
+
+ STRNCAT(str, operand_regtypes[i].name, len );
+ }
+}
+
+static int format_expr( x86_ea_t *ea, char *buf, int len,
+ enum x86_asm_format format ) {
+ char str[MAX_OP_STRING];
+
+ if ( format == att_syntax ) {
+ if (ea->base.name[0] || ea->index.name[0] || ea->scale) {
+ PRINT_DISPLACEMENT(ea);
+ STRNCAT( buf, "(", len );
+
+ if ( ea->base.name[0]) {
+ STRNCATF( buf, "%%%s", ea->base.name, len );
+ }
+ if ( ea->index.name[0]) {
+ STRNCATF( buf, ",%%%s", ea->index.name, len );
+ if ( ea->scale > 1 ) {
+ STRNCATF( buf, ",%d", ea->scale, len );
+ }
+ }
+ /* handle the syntactic exception */
+ if ( ! ea->base.name[0] &&
+ ! ea->index.name[0] ) {
+ STRNCATF( buf, ",%d", ea->scale, len );
+ }
+
+ STRNCAT( buf, ")", len );
+ } else
+ STRNCATF( buf, "0x%" PRIX32, ea->disp, len );
+
+ } else if ( format == xml_syntax ){
+
+ if ( ea->base.name[0]) {
+ STRNCAT (buf, "\t\t\t<base>\n", len);
+
+ get_operand_regtype_str (ea->base.type, str,
+ sizeof str);
+ STRNCAT (buf, "\t\t\t\t<register ", len);
+ STRNCATF (buf, "name=\"%s\" ", ea->base.name, len);
+ STRNCATF (buf, "type=\"%s\" ", str, len);
+ STRNCATF (buf, "size=%d/>\n", ea->base.size, len);
+
+ STRNCAT (buf, "\t\t\t</base>\n", len);
+ }
+
+ if ( ea->index.name[0]) {
+ STRNCAT (buf, "\t\t\t<index>\n", len);
+
+ get_operand_regtype_str (ea->index.type, str,
+ sizeof str);
+
+ STRNCAT (buf, "\t\t\t\t<register ", len);
+ STRNCATF (buf, "name=\"%s\" ", ea->index.name, len);
+ STRNCATF (buf, "type=\"%s\" ", str, len);
+ STRNCATF (buf, "size=%d/>\n", ea->index.size, len);
+
+ STRNCAT (buf, "\t\t\t</index>\n", len);
+ }
+
+ //scale
+ STRNCAT (buf, "\t\t\t<scale>\n", len);
+ STRNCAT (buf, "\t\t\t\t<immediate ", len);
+ STRNCATF (buf, "value=\"%d\"/>\n", ea->scale, len);
+ STRNCAT (buf, "\t\t\t</scale>\n", len);
+
+ if ( ea->disp_size ) {
+
+ STRNCAT (buf, "\t\t\t<displacement>\n", len);
+
+ if ( ea->disp_size > 1 && ! ea->disp_sign ) {
+ STRNCAT (buf, "\t\t\t\t<address ", len);
+ STRNCATF (buf, "value=\"0x%" PRIX32 "\"/>\n", ea->disp,
+ len);
+ } else {
+ STRNCAT (buf, "\t\t\t\t<immediate ", len);
+ STRNCATF (buf, "value=%" PRId32 "/>\n", ea->disp, len);
+ }
+
+ STRNCAT (buf, "\t\t\t</displacement>\n", len);
+ }
+
+ } else if ( format == raw_syntax ) {
+
+ PRINT_DISPLACEMENT(ea);
+ STRNCAT( buf, "(", len );
+
+ STRNCATF( buf, "%s,", ea->base.name, len );
+ STRNCATF( buf, "%s,", ea->index.name, len );
+ STRNCATF( buf, "%d", ea->scale, len );
+ STRNCAT( buf, ")", len );
+
+ } else {
+
+ STRNCAT( buf, "[", len );
+
+ if ( ea->base.name[0] ) {
+ STRNCAT( buf, ea->base.name, len );
+ if ( ea->index.name[0] ||
+ (ea->disp_size && ! ea->disp_sign) ) {
+ STRNCAT( buf, "+", len );
+ }
+ }
+ if ( ea->index.name[0] ) {
+ STRNCAT( buf, ea->index.name, len );
+ if ( ea->scale > 1 )
+ {
+ STRNCATF( buf, "*%" PRId32, ea->scale, len );
+ }
+ if ( ea->disp_size && ! ea->disp_sign )
+ {
+ STRNCAT( buf, "+", len );
+ }
+ }
+
+ if ( ea->disp_size || (! ea->index.name[0] &&
+ ! ea->base.name[0] ) )
+ {
+ PRINT_DISPLACEMENT(ea);
+ }
+
+ STRNCAT( buf, "]", len );
+ }
+
+ return( strlen(buf) );
+}
+
+static int format_seg( x86_op_t *op, char *buf, int len,
+ enum x86_asm_format format ) {
+ int len_orig = len;
+ char *reg = "";
+
+ if (! op || ! buf || ! len || ! op->flags) {
+ return(0);
+ }
+ if ( op->type != op_offset && op->type != op_expression ){
+ return(0);
+ }
+ if (! (int) op->flags & 0xF00 ) {
+ return(0);
+ }
+
+ switch (op->flags & 0xF00) {
+ case op_es_seg: reg = "es"; break;
+ case op_cs_seg: reg = "cs"; break;
+ case op_ss_seg: reg = "ss"; break;
+ case op_ds_seg: reg = "ds"; break;
+ case op_fs_seg: reg = "fs"; break;
+ case op_gs_seg: reg = "gs"; break;
+ default:
+ break;
+ }
+
+ if (! reg[0] ) {
+ return( 0 );
+ }
+
+ switch( format ) {
+ case xml_syntax:
+ STRNCAT( buf, "\t\t\t<segment ", len );
+ STRNCATF( buf, "value=\"%s\"/>\n", reg, len );
+ break;
+ case att_syntax:
+ STRNCATF( buf, "%%%s:", reg, len );
+ break;
+
+ default:
+ STRNCATF( buf, "%s:", reg, len );
+ break;
+ }
+
+ return( len_orig - len ); /* return length of appended string */
+}
+
+static char *get_operand_datatype_str( x86_op_t *op ){
+
+ static char *types[] = {
+ "sbyte", /* 0 */
+ "sword",
+ "sqword",
+ "sdword",
+ "sdqword", /* 4 */
+ "byte",
+ "word",
+ "qword",
+ "dword", /* 8 */
+ "dqword",
+ "sreal",
+ "dreal",
+ "extreal", /* 12 */
+ "bcd",
+ "ssimd",
+ "dsimd",
+ "sssimd", /* 16 */
+ "sdsimd",
+ "descr32",
+ "descr16",
+ "pdescr32", /* 20 */
+ "pdescr16",
+ "bounds16",
+ "bounds32",
+ "fpu_env16",
+ "fpu_env32", /* 25 */
+ "fpu_state16",
+ "fpu_state32",
+ "fp_reg_set"
+ };
+
+ /* handle signed values first */
+ if ( op->flags & op_signed ) {
+ switch (op->datatype) {
+ case op_byte: return types[0];
+ case op_word: return types[1];
+ case op_qword: return types[2];
+ case op_dqword: return types[4];
+ default: return types[3];
+ }
+ }
+
+ switch (op->datatype) {
+ case op_byte: return types[5];
+ case op_word: return types[6];
+ case op_qword: return types[7];
+ case op_dqword: return types[9];
+ case op_sreal: return types[10];
+ case op_dreal: return types[11];
+ case op_extreal: return types[12];
+ case op_bcd: return types[13];
+ case op_ssimd: return types[14];
+ case op_dsimd: return types[15];
+ case op_sssimd: return types[16];
+ case op_sdsimd: return types[17];
+ case op_descr32: return types[18];
+ case op_descr16: return types[19];
+ case op_pdescr32: return types[20];
+ case op_pdescr16: return types[21];
+ case op_bounds16: return types[22];
+ case op_bounds32: return types[23];
+ case op_fpustate16: return types[24];
+ case op_fpustate32: return types[25];
+ case op_fpuenv16: return types[26];
+ case op_fpuenv32: return types[27];
+ case op_fpregset: return types[28];
+ default: return types[8];
+ }
+}
+
+static int format_insn_eflags_str( enum x86_flag_status flags, char *buf,
+ int len) {
+
+ static struct {
+ char *name;
+ int value;
+ } insn_flags[] = {
+ { "carry_set ", 0x0001 },
+ { "zero_set ", 0x0002 },
+ { "oflow_set ", 0x0004 },
+ { "dir_set ", 0x0008 },
+ { "sign_set ", 0x0010 },
+ { "parity_set ", 0x0020 },
+ { "carry_or_zero_set ", 0x0040 },
+ { "zero_set_or_sign_ne_oflow ", 0x0080 },
+ { "carry_clear ", 0x0100 },
+ { "zero_clear ", 0x0200 },
+ { "oflow_clear ", 0x0400 },
+ { "dir_clear ", 0x0800 },
+ { "sign_clear ", 0x1000 },
+ { "parity_clear ", 0x2000 },
+ { "sign_eq_oflow ", 0x4000 },
+ { "sign_ne_oflow ", 0x8000 },
+ { NULL, 0x0000 }, //end
+ };
+
+ unsigned int i;
+ int len_orig = len;
+
+ for (i = 0; insn_flags[i].name; i++) {
+ if (! (flags & insn_flags[i].value) )
+ continue;
+
+ STRNCAT( buf, insn_flags[i].name, len );
+ }
+
+ return( len_orig - len );
+}
+
+static char *get_insn_group_str( enum x86_insn_group gp ) {
+
+ static char *types[] = {
+ "", // 0
+ "controlflow",// 1
+ "arithmetic", // 2
+ "logic", // 3
+ "stack", // 4
+ "comparison", // 5
+ "move", // 6
+ "string", // 7
+ "bit_manip", // 8
+ "flag_manip", // 9
+ "fpu", // 10
+ "", // 11
+ "", // 12
+ "interrupt", // 13
+ "system", // 14
+ "other", // 15
+ };
+
+ if ( gp > sizeof (types)/sizeof(types[0]) )
+ return "";
+
+ return types[gp];
+}
+
+static char *get_insn_type_str( enum x86_insn_type type ) {
+
+ static struct {
+ char *name;
+ int value;
+ } types[] = {
+ /* insn_controlflow */
+ { "jmp", 0x1001 },
+ { "jcc", 0x1002 },
+ { "call", 0x1003 },
+ { "callcc", 0x1004 },
+ { "return", 0x1005 },
+ { "loop", 0x1006 },
+ /* insn_arithmetic */
+ { "add", 0x2001 },
+ { "sub", 0x2002 },
+ { "mul", 0x2003 },
+ { "div", 0x2004 },
+ { "inc", 0x2005 },
+ { "dec", 0x2006 },
+ { "shl", 0x2007 },
+ { "shr", 0x2008 },
+ { "rol", 0x2009 },
+ { "ror", 0x200A },
+ /* insn_logic */
+ { "and", 0x3001 },
+ { "or", 0x3002 },
+ { "xor", 0x3003 },
+ { "not", 0x3004 },
+ { "neg", 0x3005 },
+ /* insn_stack */
+ { "push", 0x4001 },
+ { "pop", 0x4002 },
+ { "pushregs", 0x4003 },
+ { "popregs", 0x4004 },
+ { "pushflags", 0x4005 },
+ { "popflags", 0x4006 },
+ { "enter", 0x4007 },
+ { "leave", 0x4008 },
+ /* insn_comparison */
+ { "test", 0x5001 },
+ { "cmp", 0x5002 },
+ /* insn_move */
+ { "mov", 0x6001 }, /* move */
+ { "movcc", 0x6002 }, /* conditional move */
+ { "xchg", 0x6003 }, /* exchange */
+ { "xchgcc", 0x6004 }, /* conditional exchange */
+ /* insn_string */
+ { "strcmp", 0x7001 },
+ { "strload", 0x7002 },
+ { "strmov", 0x7003 },
+ { "strstore", 0x7004 },
+ { "translate", 0x7005 }, /* xlat */
+ /* insn_bit_manip */
+ { "bittest", 0x8001 },
+ { "bitset", 0x8002 },
+ { "bitclear", 0x8003 },
+ /* insn_flag_manip */
+ { "clear_carry", 0x9001 },
+ { "clear_zero", 0x9002 },
+ { "clear_oflow", 0x9003 },
+ { "clear_dir", 0x9004 },
+ { "clear_sign", 0x9005 },
+ { "clear_parity", 0x9006 },
+ { "set_carry", 0x9007 },
+ { "set_zero", 0x9008 },
+ { "set_oflow", 0x9009 },
+ { "set_dir", 0x900A },
+ { "set_sign", 0x900B },
+ { "set_parity", 0x900C },
+ { "tog_carry", 0x9010 },
+ { "tog_zero", 0x9020 },
+ { "tog_oflow", 0x9030 },
+ { "tog_dir", 0x9040 },
+ { "tog_sign", 0x9050 },
+ { "tog_parity", 0x9060 },
+ /* insn_fpu */
+ { "fmov", 0xA001 },
+ { "fmovcc", 0xA002 },
+ { "fneg", 0xA003 },
+ { "fabs", 0xA004 },
+ { "fadd", 0xA005 },
+ { "fsub", 0xA006 },
+ { "fmul", 0xA007 },
+ { "fdiv", 0xA008 },
+ { "fsqrt", 0xA009 },
+ { "fcmp", 0xA00A },
+ { "fcos", 0xA00C },
+ { "fldpi", 0xA00D },
+ { "fldz", 0xA00E },
+ { "ftan", 0xA00F },
+ { "fsine", 0xA010 },
+ { "fsys", 0xA020 },
+ /* insn_interrupt */
+ { "int", 0xD001 },
+ { "intcc", 0xD002 }, /* not present in x86 ISA */
+ { "iret", 0xD003 },
+ { "bound", 0xD004 },
+ { "debug", 0xD005 },
+ { "trace", 0xD006 },
+ { "invalid_op", 0xD007 },
+ { "oflow", 0xD008 },
+ /* insn_system */
+ { "halt", 0xE001 },
+ { "in", 0xE002 }, /* input from port/bus */
+ { "out", 0xE003 }, /* output to port/bus */
+ { "cpuid", 0xE004 },
+ /* insn_other */
+ { "nop", 0xF001 },
+ { "bcdconv", 0xF002 }, /* convert to or from BCD */
+ { "szconv", 0xF003 }, /* change size of operand */
+ { NULL, 0 }, //end
+ };
+
+ unsigned int i;
+
+ //go thru every type in the enum
+ for ( i = 0; types[i].name; i++ ) {
+ if ( types[i].value == type )
+ return types[i].name;
+ }
+
+ return "";
+}
+
+static char *get_insn_cpu_str( enum x86_insn_cpu cpu ) {
+ static char *intel[] = {
+ "", // 0
+ "8086", // 1
+ "80286", // 2
+ "80386", // 3
+ "80387", // 4
+ "80486", // 5
+ "Pentium", // 6
+ "Pentium Pro", // 7
+ "Pentium 2", // 8
+ "Pentium 3", // 9
+ "Pentium 4" // 10
+ };
+
+ if ( cpu <= sizeof(intel)/sizeof(intel[0]) ) {
+ return intel[cpu];
+ } else if ( cpu == 16 ) {
+ return "K6";
+ } else if ( cpu == 32 ) {
+ return "K7";
+ } else if ( cpu == 48 ) {
+ return "Athlon";
+ }
+
+ return "";
+}
+
+static char *get_insn_isa_str( enum x86_insn_isa isa ) {
+ static char *subset[] = {
+ NULL, // 0
+ "General Purpose", // 1
+ "Floating Point", // 2
+ "FPU Management", // 3
+ "MMX", // 4
+ "SSE", // 5
+ "SSE2", // 6
+ "SSE3", // 7
+ "3DNow!", // 8
+ "System" // 9
+ };
+
+ if ( isa > sizeof (subset)/sizeof(subset[0]) ) {
+ return "";
+ }
+
+ return subset[isa];
+}
+
+static int format_operand_att( x86_op_t *op, x86_insn_t *insn, char *buf,
+ int len){
+
+ char str[MAX_OP_STRING];
+
+ memset (str, 0, sizeof str);
+
+ switch ( op->type ) {
+ case op_register:
+ STRNCATF( buf, "%%%s", op->data.reg.name, len );
+ break;
+
+ case op_immediate:
+ get_operand_data_str( op, str, sizeof str );
+ STRNCATF( buf, "$%s", str, len );
+ break;
+
+ case op_relative_near:
+ STRNCATF( buf, "0x%08X",
+ (unsigned int)(op->data.sbyte +
+ insn->addr + insn->size), len );
+ break;
+
+ case op_relative_far:
+ if (op->datatype == op_word) {
+ STRNCATF( buf, "0x%08X",
+ (unsigned int)(op->data.sword +
+ insn->addr + insn->size), len );
+ } else {
+ STRNCATF( buf, "0x%08X",
+ (unsigned int)(op->data.sdword +
+ insn->addr + insn->size), len );
+ }
+ break;
+
+ case op_absolute:
+ /* ATT uses the syntax $section, $offset */
+ STRNCATF( buf, "$0x%04" PRIX16 ", ", op->data.absolute.segment,
+ len );
+ if (op->datatype == op_descr16) {
+ STRNCATF( buf, "$0x%04" PRIX16,
+ op->data.absolute.offset.off16, len );
+ } else {
+ STRNCATF( buf, "$0x%08" PRIX32,
+ op->data.absolute.offset.off32, len );
+ }
+ break;
+ case op_offset:
+ /* ATT requires a '*' before JMP/CALL ops */
+ if (insn->type == insn_jmp || insn->type == insn_call)
+ STRNCAT( buf, "*", len );
+
+ len -= format_seg( op, buf, len, att_syntax );
+ STRNCATF( buf, "0x%08" PRIX32, op->data.sdword, len );
+ break;
+
+ case op_expression:
+ /* ATT requires a '*' before JMP/CALL ops */
+ if (insn->type == insn_jmp || insn->type == insn_call)
+ STRNCAT( buf, "*", len );
+
+ len -= format_seg( op, buf, len, att_syntax );
+ len -= format_expr( &op->data.expression, buf, len,
+ att_syntax );
+ break;
+ case op_unused:
+ case op_unknown:
+ /* return 0-truncated buffer */
+ break;
+ }
+
+ return ( strlen( buf ) );
+}
+
+static int format_operand_native( x86_op_t *op, x86_insn_t *insn, char *buf,
+ int len){
+
+ char str[MAX_OP_STRING];
+
+ switch (op->type) {
+ case op_register:
+ STRNCAT( buf, op->data.reg.name, len );
+ break;
+
+ case op_immediate:
+ get_operand_data_str( op, str, sizeof str );
+ STRNCAT( buf, str, len );
+ break;
+
+ case op_relative_near:
+ STRNCATF( buf, "0x%08" PRIX32,
+ (unsigned int)(op->data.sbyte +
+ insn->addr + insn->size), len );
+ break;
+
+ case op_relative_far:
+ if ( op->datatype == op_word ) {
+ STRNCATF( buf, "0x%08" PRIX32,
+ (unsigned int)(op->data.sword +
+ insn->addr + insn->size), len );
+ break;
+ } else {
+ STRNCATF( buf, "0x%08" PRIX32, op->data.sdword +
+ insn->addr + insn->size, len );
+ }
+ break;
+
+ case op_absolute:
+ STRNCATF( buf, "$0x%04" PRIX16 ":", op->data.absolute.segment,
+ len );
+ if (op->datatype == op_descr16) {
+ STRNCATF( buf, "0x%04" PRIX16,
+ op->data.absolute.offset.off16, len );
+ } else {
+ STRNCATF( buf, "0x%08" PRIX32,
+ op->data.absolute.offset.off32, len );
+ }
+ break;
+
+ case op_offset:
+ len -= format_seg( op, buf, len, native_syntax );
+ STRNCATF( buf, "[0x%08" PRIX32 "]", op->data.sdword, len );
+ break;
+
+ case op_expression:
+ len -= format_seg( op, buf, len, native_syntax );
+ len -= format_expr( &op->data.expression, buf, len,
+ native_syntax );
+ break;
+ case op_unused:
+ case op_unknown:
+ /* return 0-truncated buffer */
+ break;
+ }
+
+ return( strlen( buf ) );
+}
+
+static int format_operand_xml( x86_op_t *op, x86_insn_t *insn, char *buf,
+ int len){
+
+ char str[MAX_OP_STRING] = "\0";
+
+ switch (op->type) {
+ case op_register:
+
+ get_operand_regtype_str( op->data.reg.type, str,
+ sizeof str );
+
+ STRNCAT( buf, "\t\t<register ", len );
+ STRNCATF( buf, "name=\"%s\" ", op->data.reg.name, len );
+ STRNCATF( buf, "type=\"%s\" ", str, len );
+ STRNCATF( buf, "size=%d/>\n", op->data.reg.size, len );
+ break;
+
+ case op_immediate:
+
+ get_operand_data_str( op, str, sizeof str );
+
+ STRNCAT( buf, "\t\t<immediate ", len );
+ STRNCATF( buf, "type=\"%s\" ",
+ get_operand_datatype_str (op), len );
+ STRNCATF( buf, "value=\"%s\"/>\n", str, len );
+ break;
+
+ case op_relative_near:
+ STRNCAT( buf, "\t\t<relative_offset ", len );
+
+ STRNCATF( buf, "value=\"0x%08" PRIX32 "\"/>\n",
+ (unsigned int)(op->data.sbyte +
+ insn->addr + insn->size), len );
+ break;
+
+ case op_relative_far:
+ STRNCAT( buf, "\t\t<relative_offset ", len );
+
+ if (op->datatype == op_word) {
+ STRNCATF( buf, "value=\"0x%08" PRIX32 "\"/>\n",
+ (unsigned int)(op->data.sword +
+ insn->addr + insn->size), len);
+ break;
+ } else {
+
+ STRNCATF( buf, "value=\"0x%08" PRIX32 "\"/>\n",
+ op->data.sdword + insn->addr + insn->size,
+ len );
+ }
+ break;
+
+ case op_absolute:
+
+ STRNCATF( buf,
+ "\t\t<absolute_address segment=\"0x%04" PRIX16 "\"",
+ op->data.absolute.segment, len );
+
+ if (op->datatype == op_descr16) {
+ STRNCATF( buf, "offset=\"0x%04" PRIX16 "\">",
+ op->data.absolute.offset.off16, len );
+ } else {
+ STRNCATF( buf, "offset=\"0x%08" PRIX32 "\">",
+ op->data.absolute.offset.off32, len );
+ }
+
+ STRNCAT( buf, "\t\t</absolute_address>\n", len );
+ break;
+
+ case op_expression:
+
+
+ STRNCAT( buf, "\t\t<address_expression>\n", len );
+
+ len -= format_seg( op, buf, len, xml_syntax );
+ len -= format_expr( &op->data.expression, buf, len,
+ xml_syntax );
+
+ STRNCAT( buf, "\t\t</address_expression>\n", len );
+ break;
+
+ case op_offset:
+
+ STRNCAT( buf, "\t\t<segment_offset>\n", len );
+
+ len -= format_seg( op, buf, len, xml_syntax );
+
+ STRNCAT( buf, "\t\t\t<address ", len);
+ STRNCATF( buf, "value=\"0x%08" PRIX32 "\"/>\n",
+ op->data.sdword, len );
+ STRNCAT( buf, "\t\t</segment_offset>\n", len );
+ break;
+
+ case op_unused:
+ case op_unknown:
+ /* return 0-truncated buffer */
+ break;
+ }
+
+ return( strlen( buf ) );
+}
+
+static int format_operand_raw( x86_op_t *op, x86_insn_t *insn, char *buf,
+ int len){
+
+ char str[MAX_OP_RAW_STRING];
+ char *datatype = get_operand_datatype_str(op);
+
+ switch (op->type) {
+ case op_register:
+
+ get_operand_regtype_str( op->data.reg.type, str,
+ sizeof str );
+
+ STRNCAT( buf, "reg|", len );
+ STRNCATF( buf, "%s|", datatype, len );
+ STRNCATF( buf, "%s:", op->data.reg.name, len );
+ STRNCATF( buf, "%s:", str, len );
+ STRNCATF( buf, "%d|", op->data.reg.size, len );
+ break;
+
+ case op_immediate:
+
+ get_operand_data_str( op, str, sizeof str );
+
+ STRNCAT( buf, "immediate|", len );
+ STRNCATF( buf, "%s|", datatype, len );
+ STRNCATF( buf, "%s|", str, len );
+ break;
+
+ case op_relative_near:
+ /* NOTE: in raw format, we print the
+ * relative offset, not the actual
+ * address of the jump target */
+
+ STRNCAT( buf, "relative|", len );
+ STRNCATF( buf, "%s|", datatype, len );
+ STRNCATF( buf, "%" PRId8 "|", op->data.sbyte, len );
+ break;
+
+ case op_relative_far:
+
+ STRNCAT( buf, "relative|", len );
+ STRNCATF( buf, "%s|", datatype, len );
+
+ if (op->datatype == op_word) {
+ STRNCATF( buf, "%" PRId16 "|", op->data.sword, len);
+ break;
+ } else {
+ STRNCATF( buf, "%" PRId32 "|", op->data.sdword, len );
+ }
+ break;
+
+ case op_absolute:
+
+ STRNCAT( buf, "absolute_address|", len );
+ STRNCATF( buf, "%s|", datatype, len );
+
+ STRNCATF( buf, "$0x%04" PRIX16 ":", op->data.absolute.segment,
+ len );
+ if (op->datatype == op_descr16) {
+ STRNCATF( buf, "0x%04" PRIX16 "|",
+ op->data.absolute.offset.off16, len );
+ } else {
+ STRNCATF( buf, "0x%08" PRIX32 "|",
+ op->data.absolute.offset.off32, len );
+ }
+
+ break;
+
+ case op_expression:
+
+ STRNCAT( buf, "address_expression|", len );
+ STRNCATF( buf, "%s|", datatype, len );
+
+ len -= format_seg( op, buf, len, native_syntax );
+ len -= format_expr( &op->data.expression, buf, len,
+ raw_syntax );
+
+ STRNCAT( buf, "|", len );
+ break;
+
+ case op_offset:
+
+ STRNCAT( buf, "segment_offset|", len );
+ STRNCATF( buf, "%s|", datatype, len );
+
+ len -= format_seg( op, buf, len, xml_syntax );
+
+ STRNCATF( buf, "%08" PRIX32 "|", op->data.sdword, len );
+ break;
+
+ case op_unused:
+ case op_unknown:
+ /* return 0-truncated buffer */
+ break;
+ }
+
+ return( strlen( buf ) );
+}
+
+int x86_format_operand( x86_op_t *op, char *buf, int len,
+ enum x86_asm_format format ){
+ x86_insn_t *insn;
+
+ if ( ! op || ! buf || len < 1 ) {
+ return(0);
+ }
+
+ /* insn is stored in x86_op_t since .21-pre3 */
+ insn = (x86_insn_t *) op->insn;
+
+ memset( buf, 0, len );
+
+ switch ( format ) {
+ case att_syntax:
+ return format_operand_att( op, insn, buf, len );
+ case xml_syntax:
+ return format_operand_xml( op, insn, buf, len );
+ case raw_syntax:
+ return format_operand_raw( op, insn, buf, len );
+ case native_syntax:
+ case intel_syntax:
+ default:
+ return format_operand_native( op, insn, buf, len );
+ }
+}
+
+#define is_imm_jmp(op) (op->type == op_absolute || \
+ op->type == op_immediate || \
+ op->type == op_offset)
+#define is_memory_op(op) (op->type == op_absolute || \
+ op->type == op_expression || \
+ op->type == op_offset)
+
+static int format_att_mnemonic( x86_insn_t *insn, char *buf, int len) {
+ int size = 0;
+ char *suffix;
+
+ if (! insn || ! buf || ! len )
+ return(0);
+
+ memset( buf, 0, len );
+
+ /* do long jump/call prefix */
+ if ( insn->type == insn_jmp || insn->type == insn_call ) {
+ if (! is_imm_jmp( x86_operand_1st(insn) ) ||
+ (x86_operand_1st(insn))->datatype != op_byte ) {
+ /* far jump/call, use "l" prefix */
+ STRNCAT( buf, "l", len );
+ }
+ STRNCAT( buf, insn->mnemonic, len );
+
+ return ( strlen( buf ) );
+ }
+
+ /* do mnemonic */
+ STRNCAT( buf, insn->mnemonic, len );
+
+ /* do suffixes for memory operands */
+ if (!(insn->note & insn_note_nosuffix) &&
+ (insn->group == insn_arithmetic ||
+ insn->group == insn_logic ||
+ insn->group == insn_move ||
+ insn->group == insn_stack ||
+ insn->group == insn_string ||
+ insn->group == insn_comparison ||
+ insn->type == insn_in ||
+ insn->type == insn_out
+ )) {
+ if ( x86_operand_count( insn, op_explicit ) > 0 &&
+ is_memory_op( x86_operand_1st(insn) ) ){
+ size = x86_operand_size( x86_operand_1st( insn ) );
+ } else if ( x86_operand_count( insn, op_explicit ) > 1 &&
+ is_memory_op( x86_operand_2nd(insn) ) ){
+ size = x86_operand_size( x86_operand_2nd( insn ) );
+ }
+ }
+
+ if ( size == 1 ) suffix = "b";
+ else if ( size == 2 ) suffix = "w";
+ else if ( size == 4 ) suffix = "l";
+ else if ( size == 8 ) suffix = "q";
+ else suffix = "";
+
+ STRNCAT( buf, suffix, len );
+ return ( strlen( buf ) );
+}
+
+int x86_format_mnemonic(x86_insn_t *insn, char *buf, int len,
+ enum x86_asm_format format){
+ char str[MAX_OP_STRING];
+
+ memset( buf, 0, len );
+ STRNCAT( buf, insn->prefix_string, len );
+ if ( format == att_syntax ) {
+ format_att_mnemonic( insn, str, sizeof str );
+ STRNCAT( buf, str, len );
+ } else {
+ STRNCAT( buf, insn->mnemonic, len );
+ }
+
+ return( strlen( buf ) );
+}
+
+struct op_string { char *buf; size_t len; };
+
+static void format_op_raw( x86_op_t *op, x86_insn_t *insn, void *arg ) {
+ struct op_string * opstr = (struct op_string *) arg;
+
+ format_operand_raw(op, insn, opstr->buf, opstr->len);
+}
+
+static int format_insn_note(x86_insn_t *insn, char *buf, int len){
+ char note[32] = {0};
+ int len_orig = len, note_len = 32;
+
+ if ( insn->note & insn_note_ring0 ) {
+ STRNCATF( note, "%s", "Ring0 ", note_len );
+ }
+ if ( insn->note & insn_note_smm ) {
+ STRNCATF( note, "%s", "SMM ", note_len );
+ }
+ if ( insn->note & insn_note_serial ) {
+ STRNCATF(note, "%s", "Serialize ", note_len );
+ }
+ STRNCATF( buf, "%s|", note, len );
+
+ return( len_orig - len );
+}
+
+static int format_raw_insn( x86_insn_t *insn, char *buf, int len ){
+ struct op_string opstr = { buf, len };
+ int i;
+
+ /* RAW style:
+ * ADDRESS|OFFSET|SIZE|BYTES|
+ * PREFIX|PREFIX_STRING|GROUP|TYPE|NOTES|
+ * MNEMONIC|CPU|ISA|FLAGS_SET|FLAGS_TESTED|
+ * STACK_MOD|STACK_MOD_VAL
+ * [|OP_TYPE|OP_DATATYPE|OP_ACCESS|OP_FLAGS|OP]*
+ *
+ * Register values are encoded as:
+ * NAME:TYPE:SIZE
+ *
+ * Effective addresses are encoded as:
+ * disp(base_reg,index_reg,scale)
+ */
+ STRNCATF( buf, "0x%08" PRIX32 "|", insn->addr , len );
+ STRNCATF( buf, "0x%08" PRIX32 "|", insn->offset, len );
+ STRNCATF( buf, "%d|" , insn->size , len );
+
+ /* print bytes */
+ for ( i = 0; i < insn->size; i++ ) {
+ STRNCATF( buf, "%02X ", insn->bytes[i], len );
+ }
+ STRNCAT( buf, "|", len );
+
+ len -= format_insn_prefix_str( insn->prefix, buf, len );
+ STRNCATF( buf, "|%s|", insn->prefix_string , len );
+ STRNCATF( buf, "%s|", get_insn_group_str( insn->group ), len );
+ STRNCATF( buf, "%s|", get_insn_type_str( insn->type ) , len );
+ STRNCATF( buf, "%s|", insn->mnemonic , len );
+ STRNCATF( buf, "%s|", get_insn_cpu_str( insn->cpu ) , len );
+ STRNCATF( buf, "%s|", get_insn_isa_str( insn->isa ) , len );
+
+ /* insn note */
+ len -= format_insn_note( insn, buf, len );
+
+ len -= format_insn_eflags_str( insn->flags_set, buf, len );
+ STRNCAT( buf, "|", len );
+ len -= format_insn_eflags_str( insn->flags_tested, buf, len );
+ STRNCAT( buf, "|", len );
+ STRNCATF( buf, "%d|", insn->stack_mod, len );
+ STRNCATF( buf, "%" PRId32 "|", insn->stack_mod_val, len );
+
+ opstr.len = len;
+ x86_operand_foreach( insn, format_op_raw, &opstr, op_any );
+
+ return( strlen (buf) );
+}
+
+static int format_xml_insn( x86_insn_t *insn, char *buf, int len ) {
+ char str[MAX_OP_XML_STRING];
+ int i;
+
+ STRNCAT( buf, "<x86_insn>\n", len );
+
+ STRNCATF( buf, "\t<address rva=\"0x%08" PRIX32 "\" ", insn->addr, len );
+ STRNCATF( buf, "offset=\"0x%08" PRIX32 "\" ", insn->offset, len );
+ STRNCATF( buf, "size=%d bytes=\"", insn->size, len );
+
+ for ( i = 0; i < insn->size; i++ ) {
+ STRNCATF( buf, "%02X ", insn->bytes[i], len );
+ }
+ STRNCAT( buf, "\"/>\n", len );
+
+ STRNCAT( buf, "\t<prefix type=\"", len );
+ len -= format_insn_prefix_str( insn->prefix, buf, len );
+ STRNCATF( buf, "\" string=\"%s\"/>\n", insn->prefix_string, len );
+
+ STRNCATF( buf, "\t<mnemonic group=\"%s\" ",
+ get_insn_group_str (insn->group), len );
+ STRNCATF( buf, "type=\"%s\" ", get_insn_type_str (insn->type), len );
+ STRNCATF( buf, "string=\"%s\"/>\n", insn->mnemonic, len );
+
+ STRNCAT( buf, "\t<flags type=set>\n", len );
+ STRNCAT( buf, "\t\t<flag name=\"", len );
+ len -= format_insn_eflags_str( insn->flags_set, buf, len );
+ STRNCAT( buf, "\"/>\n\t</flags>\n", len );
+
+
+ STRNCAT( buf, "\t<flags type=tested>\n", len );
+ STRNCAT( buf, "\t\t<flag name=\"", len );
+ len -= format_insn_eflags_str( insn->flags_tested, buf, len );
+ STRNCAT( buf, "\"/>\n\t</flags>\n", len );
+
+ if ( x86_operand_1st( insn ) ) {
+ x86_format_operand( x86_operand_1st(insn), str,
+ sizeof str, xml_syntax);
+ STRNCAT( buf, "\t<operand name=dest>\n", len );
+ STRNCAT( buf, str, len );
+ STRNCAT( buf, "\t</operand>\n", len );
+ }
+
+ if ( x86_operand_2nd( insn ) ) {
+ x86_format_operand( x86_operand_2nd( insn ), str,
+ sizeof str, xml_syntax);
+ STRNCAT( buf, "\t<operand name=src>\n", len );
+ STRNCAT( buf, str, len );
+ STRNCAT( buf, "\t</operand>\n", len );
+ }
+
+ if ( x86_operand_3rd( insn ) ) {
+ x86_format_operand( x86_operand_3rd(insn), str,
+ sizeof str, xml_syntax);
+ STRNCAT( buf, "\t<operand name=imm>\n", len );
+ STRNCAT( buf, str, len );
+ STRNCAT( buf, "\t</operand>\n", len );
+ }
+
+ STRNCAT( buf, "</x86_insn>\n", len );
+
+ return strlen (buf);
+}
+
+int x86_format_header( char *buf, int len, enum x86_asm_format format ) {
+ switch (format) {
+ case att_syntax:
+ snprintf( buf, len, "MNEMONIC\tSRC, DEST, IMM" );
+ break;
+ case intel_syntax:
+ snprintf( buf, len, "MNEMONIC\tDEST, SRC, IMM" );
+ break;
+ case native_syntax:
+ snprintf( buf, len, "ADDRESS\tBYTES\tMNEMONIC\t"
+ "DEST\tSRC\tIMM" );
+ break;
+ case raw_syntax:
+ snprintf( buf, len, "ADDRESS|OFFSET|SIZE|BYTES|"
+ "PREFIX|PREFIX_STRING|GROUP|TYPE|NOTES|"
+ "MNEMONIC|CPU|ISA|FLAGS_SET|FLAGS_TESTED|"
+ "STACK_MOD|STACK_MOD_VAL"
+ "[|OP_TYPE|OP_DATATYPE|OP_ACCESS|OP_FLAGS|OP]*"
+ );
+ break;
+ case xml_syntax:
+ snprintf( buf, len,
+ "<x86_insn>"
+ "<address rva= offset= size= bytes=/>"
+ "<prefix type= string=/>"
+ "<mnemonic group= type= string= "
+ "cpu= isa= note= />"
+ "<flags type=set>"
+ "<flag name=>"
+ "</flags>"
+ "<stack_mod val= >"
+ "<flags type=tested>"
+ "<flag name=>"
+ "</flags>"
+ "<operand name=>"
+ "<register name= type= size=/>"
+ "<immediate type= value=/>"
+ "<relative_offset value=/>"
+ "<absolute_address value=>"
+ "<segment value=/>"
+ "</absolute_address>"
+ "<address_expression>"
+ "<segment value=/>"
+ "<base>"
+ "<register name= type= size=/>"
+ "</base>"
+ "<index>"
+ "<register name= type= size=/>"
+ "</index>"
+ "<scale>"
+ "<immediate value=/>"
+ "</scale>"
+ "<displacement>"
+ "<immediate value=/>"
+ "<address value=/>"
+ "</displacement>"
+ "</address_expression>"
+ "<segment_offset>"
+ "<address value=/>"
+ "</segment_offset>"
+ "</operand>"
+ "</x86_insn>"
+ );
+ break;
+ case unknown_syntax:
+ if ( len ) {
+ buf[0] = '\0';
+ }
+ break;
+ }
+
+ return( strlen(buf) );
+}
+
+int x86_format_insn( x86_insn_t *insn, char *buf, int len,
+ enum x86_asm_format format ){
+ char str[MAX_OP_STRING];
+ x86_op_t *src, *dst;
+ int i;
+
+ memset(buf, 0, len);
+ if ( format == intel_syntax ) {
+ /* INTEL STYLE: mnemonic dest, src, imm */
+ STRNCAT( buf, insn->prefix_string, len );
+ STRNCAT( buf, insn->mnemonic, len );
+ STRNCAT( buf, "\t", len );
+
+ /* dest */
+ if ( (dst = x86_operand_1st( insn )) && !(dst->flags & op_implied) ) {
+ x86_format_operand( dst, str, MAX_OP_STRING, format);
+ STRNCAT( buf, str, len );
+ }
+
+ /* src */
+ if ( (src = x86_operand_2nd( insn )) ) {
+ if ( !(dst->flags & op_implied) ) {
+ STRNCAT( buf, ", ", len );
+ }
+ x86_format_operand( src, str, MAX_OP_STRING, format);
+ STRNCAT( buf, str, len );
+ }
+
+ /* imm */
+ if ( x86_operand_3rd( insn )) {
+ STRNCAT( buf, ", ", len );
+ x86_format_operand( x86_operand_3rd( insn ),
+ str, MAX_OP_STRING, format);
+ STRNCAT( buf, str, len );
+ }
+
+ } else if ( format == att_syntax ) {
+ /* ATT STYLE: mnemonic src, dest, imm */
+ STRNCAT( buf, insn->prefix_string, len );
+ format_att_mnemonic(insn, str, MAX_OP_STRING);
+ STRNCATF( buf, "%s\t", str, len);
+
+
+ /* not sure which is correct? sometimes GNU as requires
+ * an imm as the first operand, sometimes as the third... */
+ /* imm */
+ if ( x86_operand_3rd( insn ) ) {
+ x86_format_operand(x86_operand_3rd( insn ),
+ str, MAX_OP_STRING, format);
+ STRNCAT( buf, str, len );
+ /* there is always 'dest' operand if there is 'src' */
+ STRNCAT( buf, ", ", len );
+ }
+
+ if ( (insn->note & insn_note_nonswap ) == 0 ) {
+ /* regular AT&T style swap */
+ src = x86_operand_2nd( insn );
+ dst = x86_operand_1st( insn );
+ }
+ else {
+ /* special-case instructions */
+ src = x86_operand_1st( insn );
+ dst = x86_operand_2nd( insn );
+ }
+
+ /* src */
+ if ( src ) {
+ x86_format_operand(src, str, MAX_OP_STRING, format);
+ STRNCAT( buf, str, len );
+ /* there is always 'dest' operand if there is 'src' */
+ if ( dst && !(dst->flags & op_implied) ) {
+ STRNCAT( buf, ", ", len );
+ }
+ }
+
+ /* dest */
+ if ( dst && !(dst->flags & op_implied) ) {
+ x86_format_operand( dst, str, MAX_OP_STRING, format);
+ STRNCAT( buf, str, len );
+ }
+
+
+ } else if ( format == raw_syntax ) {
+ format_raw_insn( insn, buf, len );
+ } else if ( format == xml_syntax ) {
+ format_xml_insn( insn, buf, len );
+ } else { /* default to native */
+ /* NATIVE style: RVA\tBYTES\tMNEMONIC\tOPERANDS */
+ /* print address */
+ STRNCATF( buf, "%08" PRIX32 "\t", insn->addr, len );
+
+ /* print bytes */
+ for ( i = 0; i < insn->size; i++ ) {
+ STRNCATF( buf, "%02X ", insn->bytes[i], len );
+ }
+
+ STRNCAT( buf, "\t", len );
+
+ /* print mnemonic */
+ STRNCAT( buf, insn->prefix_string, len );
+ STRNCAT( buf, insn->mnemonic, len );
+ STRNCAT( buf, "\t", len );
+
+ /* print operands */
+ /* dest */
+ if ( x86_operand_1st( insn ) ) {
+ x86_format_operand( x86_operand_1st( insn ),
+ str, MAX_OP_STRING, format);
+ STRNCATF( buf, "%s\t", str, len );
+ }
+
+ /* src */
+ if ( x86_operand_2nd( insn ) ) {
+ x86_format_operand(x86_operand_2nd( insn ),
+ str, MAX_OP_STRING, format);
+ STRNCATF( buf, "%s\t", str, len );
+ }
+
+ /* imm */
+ if ( x86_operand_3rd( insn )) {
+ x86_format_operand( x86_operand_3rd( insn ),
+ str, MAX_OP_STRING, format);
+ STRNCAT( buf, str, len );
+ }
+ }
+
+ return( strlen( buf ) );
+}
+
generated by cgit v1.2.1 (git 2.18.0) at 2024-05-18 08:25:34 +0000