Hello,
I'm using the mspgcc tool chain on a SuSE Linux 9.2 built as described in the
documentation. I'm able to compile load and run programs but using the
debugger does not work as expected. I' using
GNU gdb 5.1.1
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This GDB was configured as "--host=i686-pc-linux-gnu --target=msp430".
I compiled and linked the following program:
#include "io.h"
typedef struct {
uint16_t lo;
uint16_t hi;
double slope;
uint16_t pDeepestStop;
} GradientFactor;
static GradientFactor gf;
void GradientFactor_init(uint16_t lo, uint16_t hi);
void GradientFactor_reset(void);
void GradientFactor_init(uint16_t lo, uint16_t hi) {
gf.lo = lo;
gf.hi = hi;
GradientFactor_reset();
}
void GradientFactor_reset() {
gf.pDeepestStop = 0;
gf.slope = 0.0;
}
int main(int argc, char **argv) {
/* Disable watchdog during initialization */
WDTCTL = WDTPW|WDTHOLD;
/* Make all pins to I/O pins */
P1SEL = 0;
P2SEL = 0;
P3SEL = 0;
P4SEL = 0;
P5SEL = 0;
P6SEL = 0;
/* Set all pins to low */
P1OUT = 0;
P2OUT = 0;
P3OUT = 0;
P4OUT = 0;
P5OUT = 0;
P6OUT = 0;
/* Make all pins to output pins */
P1DIR = 0xff;
P2DIR = 0xff;
P3DIR = 0xff;
P4DIR = 0xff;
P5DIR = 0xff;
P6DIR = 0xff;
/* Disable interrupts from port 1 */
P1IES = 0;
P1IE = 0;
/* Disable interrupts from port 2 */
P2IES = 0;
P2IE = 0;
/* Set clockspeed */
BCSCTL1 = RSEL2 | RSEL1 | RSEL0;
DCOCTL = DCO2 | DCO1 | DCO0;
GradientFactor_init((uint16_t)20, (uint16_t)70);
return 0;
}
with:
/usr/local/msp430/bin/msp430-gcc -mmcu=msp430x149
-I/usr/local/msp430/msp430/include -pedantic -Wall -Wstrict-prototypes
-Winline -g -c simpletest.c-o simpletest.o
/usr/local/msp430/bin/msp430-gcc -mmcu=msp430x149 simpletest.o -o simpletest
This gives:
msp430-objdump -S simpletest
simpletest: file format elf32-msp430
Disassembly of section .text:
00001100 <_reset_vector__>:
1100: b2 40 80 5a mov #23168, &0x0120 ;#0x5a80
1104: 20 01
1106: 3f 40 12 12 mov #4626, r15 ;#0x1212
110a: 3e 40 00 02 mov #512, r14 ;#0x0200
110e: 3d 40 00 02 mov #512, r13 ;#0x0200
1112: 0d 9e cmp r14, r13 ;
1114: 05 24 jz $+12 ;abs 0x1120
1116: fe 4f 00 00 mov.b @r15+, 0(r14) ;
111a: 1e 53 inc r14 ;
111c: 0e 9d cmp r13, r14 ;
111e: fb 2b jnc $-8 ;abs 0x1116
1120: 3f 40 00 02 mov #512, r15 ;#0x0200
1124: 3d 40 0a 02 mov #522, r13 ;#0x020a
1128: 0d 9f cmp r15, r13 ;
112a: 05 24 jz $+12 ;abs 0x1136
112c: cf 43 00 00 mov.b #0, 0(r15) ;r3 As==00
1130: 1f 53 inc r15 ;
1132: 0f 9d cmp r13, r15 ;
1134: fb 2b jnc $-8 ;abs 0x112c
1136: 30 40 82 11 br #0x1182 ;
0000113a <__ctors_end>:
113a: 30 40 3e 11 br #0x113e ;
0000113e <_unexpected_>:
113e: 00 13 reti
00001140 <GradientFactor_init>:
void GradientFactor_init(uint16_t lo, uint16_t hi);
void GradientFactor_reset(void);
void GradientFactor_init(uint16_t lo, uint16_t hi) {
1140: 05 12 push r5 ;
1142: 04 12 push r4 ;
1144: 05 41 mov r1, r5 ;
1146: 35 50 06 00 add #6, r5 ;#0x0006
114a: 21 82 sub #4, r1 ;r2 As==10
114c: 04 41 mov r1, r4 ;
114e: 84 4f 00 00 mov r15, 0(r4) ;
1152: 84 4e 02 00 mov r14, 2(r4) ;
gf.lo = lo;
1156: a2 44 00 02 mov @r4, &0x0200 ;
gf.hi = hi;
115a: 92 44 02 00 mov 2(r4), &0x0202 ;
115e: 02 02
GradientFactor_reset();
1160: b0 12 6c 11 call #4460 ;#0x116c
}
1164: 21 52 add #4, r1 ;r2 As==10
1166: 34 41 pop r4 ;
1168: 35 41 pop r5 ;
116a: 30 41 ret
0000116c <GradientFactor_reset>:
void GradientFactor_reset() {
116c: 05 12 push r5 ;
116e: 04 12 push r4 ;
gf.pDeepestStop = 0;
1170: 82 43 08 02 mov #0, &0x0208 ;r3 As==00
gf.slope = 0.0;
1174: 82 43 04 02 mov #0, &0x0204 ;r3 As==00
1178: 82 43 06 02 mov #0, &0x0206 ;r3 As==00
}
117c: 34 41 pop r4 ;
117e: 35 41 pop r5 ;
1180: 30 41 ret
00001182 <main>:
int main(int argc, char **argv) {
1182: 31 40 fc 09 mov #2556, r1 ;#0x09fc
1186: 04 41 mov r1, r4 ;
1188: 84 4f 00 00 mov r15, 0(r4) ;
118c: 84 4e 02 00 mov r14, 2(r4) ;
/* Disable watchdog during initialization */
WDTCTL = WDTPW|WDTHOLD;
1190: b2 40 80 5a mov #23168, &0x0120 ;#0x5a80
1194: 20 01
/* Make all pins to I/O pins */
P1SEL = 0;
1196: c2 43 26 00 mov.b #0, &0x0026 ;r3 As==00
P2SEL = 0;
119a: c2 43 2e 00 mov.b #0, &0x002e ;r3 As==00
P3SEL = 0;
119e: c2 43 1b 00 mov.b #0, &0x001b ;r3 As==00
P4SEL = 0;
11a2: c2 43 1f 00 mov.b #0, &0x001f ;r3 As==00
P5SEL = 0;
11a6: c2 43 33 00 mov.b #0, &0x0033 ;r3 As==00
P6SEL = 0;
11aa: c2 43 37 00 mov.b #0, &0x0037 ;r3 As==00
/* Set all pins to low */
P1OUT = 0;
11ae: c2 43 21 00 mov.b #0, &0x0021 ;r3 As==00
P2OUT = 0;
11b2: c2 43 29 00 mov.b #0, &0x0029 ;r3 As==00
P3OUT = 0;
11b6: c2 43 19 00 mov.b #0, &0x0019 ;r3 As==00
P4OUT = 0;
11ba: c2 43 1d 00 mov.b #0, &0x001d ;r3 As==00
P5OUT = 0;
11be: c2 43 31 00 mov.b #0, &0x0031 ;r3 As==00
P6OUT = 0;
11c2: c2 43 35 00 mov.b #0, &0x0035 ;r3 As==00
/* Make all pins to output pins */
P1DIR = 0xff;
11c6: f2 43 22 00 mov.b #-1, &0x0022 ;r3 As==11
P2DIR = 0xff;
11ca: f2 43 2a 00 mov.b #-1, &0x002a ;r3 As==11
P3DIR = 0xff;
11ce: f2 43 1a 00 mov.b #-1, &0x001a ;r3 As==11
P4DIR = 0xff;
11d2: f2 43 1e 00 mov.b #-1, &0x001e ;r3 As==11
P5DIR = 0xff;
11d6: f2 43 32 00 mov.b #-1, &0x0032 ;r3 As==11
P6DIR = 0xff;
11da: f2 43 36 00 mov.b #-1, &0x0036 ;r3 As==11
/* Disable interrupts from port 1 */
P1IES = 0;
11de: c2 43 24 00 mov.b #0, &0x0024 ;r3 As==00
P1IE = 0;
11e2: c2 43 25 00 mov.b #0, &0x0025 ;r3 As==00
/* Disable interrupts from port 2 */
P2IES = 0;
11e6: c2 43 2c 00 mov.b #0, &0x002c ;r3 As==00
P2IE = 0;
11ea: c2 43 2d 00 mov.b #0, &0x002d ;r3 As==00
/* Set clockspeed */
BCSCTL1 = RSEL2 | RSEL1 | RSEL0;
11ee: f2 40 07 00 mov.b #7, &0x0057 ;#0x0007
11f2: 57 00
DCOCTL = DCO2 | DCO1 | DCO0;
11f4: f2 40 e0 ff mov.b #-32, &0x0056 ;#0xffe0
11f8: 56 00
GradientFactor_init((uint16_t)20, (uint16_t)70);
11fa: 3e 40 46 00 mov #70, r14 ;#0x0046
11fe: 3f 40 14 00 mov #20, r15 ;#0x0014
1202: b0 12 40 11 call #4416 ;#0x1140
return 0;
1206: 0f 43 clr r15 ;
}
1208: 21 52 add #4, r1 ;r2 As==10
120a: 30 40 0e 12 br #0x120e ;
0000120e <__stop_progExec__>:
120e: 02 df bis r15, r2 ;
1210: fe 3f jmp $-2 ;abs 0x120e
Disassembly of section .vectors:
0000ffe0 <InterruptVectors>:
ffe0: 3a 11 3a 11 3a 11 3a 11 3a 11 3a 11 3a 11 3a
11 :.:.:.:.:.:.:.:.
fff0: 3a 11 3a 11 3a 11 3a 11 3a 11 3a 11 3a 11 00
11 :.:.:.:.:.:.:...
When I set a breakpoint at the first statement of the function
GradientFactor_init() the execution stops at this line. Using the command
"info args" gives:
lo = 522
hi = 512
and not 20 and 70 as expected. Stepping two lines further and looking at gf
with:
p gf
$1 = {lo = 20, hi = 70, slope = 0, pDeepestStop = 0}
shows the expected values.
I would be very happy if someone on this list could give me a hint what I'm
doing wrong.
Regards,
Martin
