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Warn whenever address bits in avrdude.conf SPI commands are misplaced

This commit is contained in:
Stefan Rueger 2022-07-21 23:11:44 +01:00
parent 02788fb48a
commit a95d169ccc
1 changed files with 24 additions and 11 deletions
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35
src/config_gram.y
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@ -25,6 +25,7 @@
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <math.h> #include <math.h>
#include <errno.h>
#include "avrdude.h" #include "avrdude.h"
#include "libavrdude.h" #include "libavrdude.h"
@ -1662,12 +1663,10 @@ static int which_opcode(TOKEN * opcode)
static int parse_cmdbits(OPCODE * op, int opnum) static int parse_cmdbits(OPCODE * op, int opnum)
{ {
TOKEN * t; TOKEN *t;
int bitno; int bitno;
char * e;
char * q;
int len; int len;
char * s, *brkt = NULL; char *s, *brkt = NULL;
int rv = 0; int rv = 0;
bitno = 32; bitno = 32;
@ -1724,7 +1723,7 @@ static int parse_cmdbits(OPCODE * op, int opnum)
op->bit[bitno].bitno = bitno < 8 || bitno > 23? 0: op->bit[bitno].bitno = bitno < 8 || bitno > 23? 0:
opnum == AVR_OP_LOAD_EXT_ADDR? bitno+8: bitno-8; /* correct bit number for lone 'a' */ opnum == AVR_OP_LOAD_EXT_ADDR? bitno+8: bitno-8; /* correct bit number for lone 'a' */
if(bitno < 8 || bitno > 23) if(bitno < 8 || bitno > 23)
yywarning("address bits don't normally appear in Byte 0 or Byte 3 of SPI programming commands"); yywarning("address bits don't normally appear in Bytes 0 or 3 of SPI commands");
break; break;
case 'i': case 'i':
op->bit[bitno].type = AVR_CMDBIT_INPUT; op->bit[bitno].type = AVR_CMDBIT_INPUT;
@ -1749,13 +1748,27 @@ static int parse_cmdbits(OPCODE * op, int opnum)
} }
else { else {
if (*s == 'a') { if (*s == 'a') {
q = &s[1]; int sb, bn;
op->bit[bitno].bitno = strtol(q, &e, 0); char *e, *q;
if ((e == q)||(*e != 0)) {
yyerror("can't parse bit number from \"%s\"", q); q = s+1;
rv = -1; errno = 0;
break; bn = strtol(q, &e, 0); // address line
if (e == q || *e != 0 || errno) {
yywarning("can't parse bit number from a%s", q);
bn = 0;
} }
sb = opnum == AVR_OP_LOAD_EXT_ADDR? bitno+8: bitno-8; // should be this number
if(bitno < 8 || bitno > 23)
yywarning("address bits don't normally appear in Bytes 0 or 3 of SPI commands");
else if((bn & 31) != sb)
yywarning("a%d would normally be expected to be a%d", bn, sb);
else if(bn < 0 || bn > 31)
yywarning("invalid address bit a%d, using a%d", bn, bn & 31);
op->bit[bitno].bitno = bn & 31;
op->bit[bitno].type = AVR_CMDBIT_ADDRESS; op->bit[bitno].type = AVR_CMDBIT_ADDRESS;
op->bit[bitno].value = 0; op->bit[bitno].value = 0;
} }