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authorGravatarGravatar AJR <ajrhacker@users.noreply.github.com>2019-07-12 22:47:43 -0400
committerGravatarGravatar AJR <ajrhacker@users.noreply.github.com>2019-08-25 18:08:45 -0400
commite5e574df7edc326b258533e18e20cd7b2a5c9072 (patch)
tree5633e35d2d96085c1502d7377713a98dfbddd5d5 /src/tools
parentfda7710c738c72ba333104f62a382cbce83b1f90 (diff)
unidasm: Add -xchbytes option to swap bytes
Diffstat (limited to 'src/tools')
-rw-r--r--src/tools/unidasm.cpp14
1 files changed, 12 insertions, 2 deletions
diff --git a/src/tools/unidasm.cpp b/src/tools/unidasm.cpp
index 135a540da05..b2361ff7ffd 100644
--- a/src/tools/unidasm.cpp
+++ b/src/tools/unidasm.cpp
@@ -296,6 +296,7 @@ struct options
const char * filename;
offs_t basepc;
uint8_t norawbytes;
+ uint8_t xchbytes;
uint8_t lower;
uint8_t upper;
uint8_t flipped;
@@ -951,6 +952,8 @@ static int parse_options(int argc, char *argv[], options *opts)
opts->norawbytes = true;
else if(tolower((uint8_t)curarg[1]) == 'u')
opts->upper = true;
+ else if(tolower((uint8_t)curarg[1]) == 'x')
+ opts->xchbytes = true;
else
goto usage;
}
@@ -1029,7 +1032,7 @@ static int parse_options(int argc, char *argv[], options *opts)
usage:
printf("Usage: %s <filename> -arch <architecture> [-basepc <pc>] \n", argv[0]);
- printf(" [-mode <n>] [-norawbytes] [-flipped] [-upper] [-lower]\n");
+ printf(" [-mode <n>] [-norawbytes] [-xchbytes] [-flipped] [-upper] [-lower]\n");
printf(" [-skip <n>] [-count <n>]\n");
printf("\n");
printf("Supported architectures:");
@@ -1080,7 +1083,14 @@ int main(int argc, char *argv[])
base_buffer.data.resize(rounded_size + 8, 0x00);
base_buffer.size = length;
base_buffer.base_pc = opts.basepc;
- memcpy(&base_buffer.data[0], (const u8 *)data + opts.skip, length - opts.skip);
+ if(opts.xchbytes) {
+ for(uint32_t offset = opts.skip; offset < length - 1; offset += 2) {
+ base_buffer.data[offset - opts.skip] = ((const u8 *)data)[offset + 1];
+ base_buffer.data[offset - opts.skip + 1] = ((const u8 *)data)[offset];
+ }
+ }
+ else
+ memcpy(&base_buffer.data[0], (const u8 *)data + opts.skip, length - opts.skip);
// Build the decryption buffers if needed
unidasm_data_buffer opcodes_buffer(disasm.get(), opts.dasm), params_buffer(disasm.get(), opts.dasm);