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Fix endianness for dryrun initialisation of chip

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This commit is contained in:
Stefan Rueger
2026-06-12 19:10:13 +01:00
parent 19b76d4ae0
commit 2f0f599a06
1 changed files with 6 additions and 4 deletions
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10
src/dryrun.c
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@@ -335,7 +335,8 @@ static int dryrun_chip_erase(const PROGRAMMER *pgm, const AVRPART *punused) {
if((mem = avr_locate_lock(dry.dp)))
if(mem->initval != -1 && mem->size > 0 && mem->size <= (int) sizeof(mem->initval))
memcpy(mem->buf, &mem->initval, mem->size); // FIXME: relying on little endian here
for(int i = 0; i < mem->size; i++)
mem->buf[i] = mem->initval >> 8*i;
return 0;
}
@@ -749,7 +750,8 @@ static void dryrun_enable(PROGRAMMER *pgm, const AVRPART *p) {
} else if(mem_is_a_fuse(m) || mem_is_lock(m)) {
// Lock, eg, can have 4 bytes: still allow initialisation from initval
if(m->initval != -1 && m->size >= 1 && m->size <= (int) sizeof(m->initval)) {
memcpy(m->buf, &m->initval, m->size); // FIXME: relying on little endian here
for(int i = 0; i < m->size; i++)
m->buf[i] = m->initval >> 8*i;
if(mem_is_a_fuse(m)) {
int fno = mem_fuse_offset(m);
@@ -795,8 +797,8 @@ static void dryrun_enable(PROGRAMMER *pgm, const AVRPART *p) {
for(int i = 0; i < nr; i++)
if(rf[i].initval != -1 && rf[i].size > 0 && rf[i].size < 5)
if(rf[i].addr >= 0 && rf[i].addr + rf[i].size <= m->size)
for(int k = 0; k < rf[i].size; k++) // FIXME: Assume little endian compiler
m->buf[rf[i].addr + k] = ((unsigned char *) &rf[i].initval)[k];
for(int k = 0; k < rf[i].size; k++)
m->buf[rf[i].addr + k] = rf[i].initval >> 8*k;
}
}
if(prodsigm) {