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Added option for running with uncompressed .data section. Thanks @doegox

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gator96100 2020-12-28 22:48:41 +01:00
commit 11567dc2e3
4 changed files with 34 additions and 4 deletions
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20
armsrc/start.c
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@ -14,14 +14,16 @@
#include "proxmark3_arm.h"
#include "appmain.h"
#ifndef WITH_NO_COMPRESSION
#include "lz4.h"
#endif
#include "BigBuf.h"
#include "string.h"
extern struct common_area common_area;
extern char __data_src_start__, __data_start__, __data_end__, __bss_start__, __bss_end__;
#ifndef WITH_NO_COMPRESSION
static void uncompress_data_section(void) {
int avail_in;
memcpy(&avail_in, &__data_src_start__, sizeof(int));
@ -35,6 +37,7 @@ static void uncompress_data_section(void) {
// save the size of the compressed data section
common_area.arg1 = avail_in;
}
#endif
void __attribute__((section(".startos"))) Vector(void);
void Vector(void) {
@ -47,12 +50,23 @@ void Vector(void) {
common_area.version = 1;
}
common_area.flags.osimage_present = 1;
uncompress_data_section();
#ifdef WITH_NO_COMPRESSION
/* Set up data segment: Copy from flash to ram */
char *src = &__data_src_start__;
char *dst = &__data_start__;
char *end = &__data_end__;
while(dst < end) *dst++ = *src++;
dst = &__bss_start__;
end = &__bss_end__;
#else
uncompress_data_section();
/* Set up (that is: clear) BSS. */
char *dst = &__bss_start__;
char *end = &__bss_end__;
#endif
while (dst < end) *dst++ = 0;
AppMain();