gvb@relay.eu.net (Gerlach van Beinum) (11/22/89)
There seems to be a bug in the gcc 1.36 compiler
The generated assembly code for type long long (64 bit int's)
is wrong. This error is the reason we can't compile gdb
with gcc ( gdw works when compiled with the local compiler)
See small file below.
-----------------------------------------
long long ll = 123;
main()
{
printf("%ld\n",(long)ll);
printf("%LL\n",(long)ll); /* %LL is the specifier for64 bit int's */
}
---------------------------------------
Resulting .s file with Gnu compiler :
;NO_APP
gcc_compiled.:
.globl _ll
.data
.align 4
_ll:
ds.w 123 ; <=== should be in the 2nd word!
ds.w 0
.text
LC0:
ds.b "%ld\012\000"
.text
.align 2
.globl _main
_main:
ld.w _ll,s0 ; <== should be ld.l !
psh.w s0
pshea LC0
mov sp,ap
calls _printf
ld.w 12(fp),ap
rtn
--------------------------------------
Resulting .s file wilt convex compiler :
.fpmode native
LL0:
.data
.align 2
.globl _ll
_ll:
ds.l 0x00000007b
.text
.globl _main
_main:
sub.w #.L1,sp
.data 1
L6:
ds.b "%ld\12\0"
.text
ld.l _ll,s0 ;70 : <=== Correct.
;5
psh.w s0 ;67
pshea L6 ;67a
mov sp,ap
pshea #2
calls _printf ;37
add.w #12,sp
ld.w 12(fp),ap
.data 1
L7:
ds.b "%LL\12\0"
.text
ld.l _ll,s0 ;70
psh.l s0 ;67
pshea L7 ;67a
mov sp,ap
pshea #2
calls _printf ;37
add.w #16,sp
ld.w 12(fp),ap
rtn
.L1 = 0
.data