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Move evaluating 'is flash' from caller to callee avr_mem_hiaddr()

This commit is contained in:
Stefan Rueger 2022-04-15 20:48:46 +01:00
parent ed38456f83
commit e18d436f88
2 changed files with 17 additions and 29 deletions
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23
src/avr.c
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@ -278,6 +278,7 @@ int avr_read_byte_default(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
* value. This is useful for determining where to stop when dealing * value. This is useful for determining where to stop when dealing
* with "flash" memory, since writing 0xff to flash is typically a * with "flash" memory, since writing 0xff to flash is typically a
* no-op. Always return an even number since flash is word addressed. * no-op. Always return an even number since flash is word addressed.
* Only apply this optimisation on flash-type memory.
*/ */
int avr_mem_hiaddr(AVRMEM * mem) int avr_mem_hiaddr(AVRMEM * mem)
{ {
@ -293,6 +294,13 @@ int avr_mem_hiaddr(AVRMEM * mem)
if(disableffopt) if(disableffopt)
return mem->size; return mem->size;
/* if the memory is not a flash-type memory do not remove trailing 0xff */
if(strcasecmp(mem->desc, "flash") &&
strcasecmp(mem->desc, "application") &&
strcasecmp(mem->desc, "apptable") &&
strcasecmp(mem->desc, "boot"))
return mem->size;
/* return the highest non-0xff address regardless of how much /* return the highest non-0xff address regardless of how much
memory was read */ memory was read */
for (i=mem->size-1; i>0; i--) { for (i=mem->size-1; i>0; i--) {
@ -426,15 +434,8 @@ int avr_read(PROGRAMMER * pgm, AVRPART * p, char * memtype,
nread++; nread++;
report_progress(nread, npages, NULL); report_progress(nread, npages, NULL);
} }
if (!failure) { if (!failure)
if (strcasecmp(mem->desc, "flash") == 0 ||
strcasecmp(mem->desc, "application") == 0 ||
strcasecmp(mem->desc, "apptable") == 0 ||
strcasecmp(mem->desc, "boot") == 0)
return avr_mem_hiaddr(mem); return avr_mem_hiaddr(mem);
else
return mem->size;
}
/* else: fall back to byte-at-a-time write, for historical reasons */ /* else: fall back to byte-at-a-time write, for historical reasons */
} }
@ -464,13 +465,7 @@ int avr_read(PROGRAMMER * pgm, AVRPART * p, char * memtype,
report_progress(i, mem->size, NULL); report_progress(i, mem->size, NULL);
} }
if (strcasecmp(mem->desc, "flash") == 0 ||
strcasecmp(mem->desc, "application") == 0 ||
strcasecmp(mem->desc, "apptable") == 0 ||
strcasecmp(mem->desc, "boot") == 0)
return avr_mem_hiaddr(mem); return avr_mem_hiaddr(mem);
else
return i;
} }

13
src/fileio.c
View File

@ -1585,21 +1585,14 @@ int fileio(int op, char * filename, FILEFMT format,
return -1; return -1;
} }
if (rc > 0) { /* on reading flash set the size to location of highest non-0xff byte */
if ((op == FIO_READ) && (strcasecmp(mem->desc, "flash") == 0 || if (rc > 0 && op == FIO_READ) {
strcasecmp(mem->desc, "application") == 0 ||
strcasecmp(mem->desc, "apptable") == 0 ||
strcasecmp(mem->desc, "boot") == 0)) {
/*
* if we are reading flash, just mark the size as being the
* highest non-0xff byte
*/
int hiaddr = avr_mem_hiaddr(mem); int hiaddr = avr_mem_hiaddr(mem);
if(hiaddr < rc) /* if trailing-0xff not disabled */ if(hiaddr < rc) /* if trailing-0xff not disabled */
rc = hiaddr; rc = hiaddr;
} }
}
if (format != FMT_IMM && !using_stdio) { if (format != FMT_IMM && !using_stdio) {
fclose(f); fclose(f);
} }