https://sourceware.org/bugzilla/show_bug.cgi?id=28513
Bug ID: 28513
Summary: avr rjmp offset calculation is off by an instruction
Product: binutils
Version: 2.26
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: karako.tibor at freemail dot hu
Target Milestone: ---
When compiled in one step the the rjmp offsets are miscalculated. If I compile
then link the result is correct though.
main.c:
int main() {
asm("out 0x14, r24");
while (1) {
asm("out 0x16, r24");
asm("out 0x18, r24");
}
}
avr-gcc -O main.c -o faulty.hex -mmcu=attiny2313 -Wl,--oformat,ihex
avr-objdump -j .sec1 -d -m avr faulty.hex
This gives:
34: 84 bb out 0x14, r24 ; 20
36: 86 bb out 0x16, r24 ; 22
38: 88 bb out 0x18, r24 ; 24
3a: fe cf rjmp .-4 ; 0x38 <-- should be 0x36
avr-gcc -O main.c -o correct.elf -mmcu=attiny2313
avr-ld -o correct.elf.hex --oformat ihex correct.elf
avr-objdump -j .sec1 -d -m avr correct.elf.hex
34: 84 bb out 0x14, r24 ; 20
36: 86 bb out 0x16, r24 ; 22
38: 88 bb out 0x18, r24 ; 24
3a: fd cf rjmp .-6 ; 0x36
--
You are receiving this mail because:
You are on the CC list for the bug.
