On 19 May 2011 06:11, Mark Wielaard <[email protected]> wrote:
> On Wed, 2011-05-18 at 12:53 -0500, Linas Vepstas wrote:
>> I was fiddling with elfutils and hit a trite buglet;
>>
>> lib/eu-config.h defines OLD_VERSION with an equals sign in it (instead of
>> .set)
>> the assembler I use has equals signs reserved for other uses (they're
>> actually
>> part of the instruction set).
>
> Using "=" for assigning symbols is normal gas usage.
Its gas. The core problem is that the instruction set itself uses equals signs
liberally to do register-register and register-memory assignments. An example
snippet (generated by gcc) below -- as should be clear, differentiating between
different uses of equals signs would be ... unpleasant.
I'd provide a patch; it would have to be to configure.ac, etc. but Ulrich's
comments suggest that it might not be worth the effort :-/ Suggestions?
-- linas
.file "cycles.C"
.section .bss,"aw",@nobits
.subsection -2
.lcomm __gcov_indirect_call_callee,4,4,4
.lcomm __gcov_indirect_call_counters,4,4,4
.section .rodata.str1.1,"aMS",@progbits,1
.LC0:
.string "%d"
.text
.p2align 2
.p2align 4,,15
.globl _Z3prti
.type _Z3prti, @function
_Z3prti:
.LFB19:
.cfi_startproc
.cfi_personality 0x90,DW.ref.__gxx_personality_v0
// saved LR + FP regs size (bytes) = 8
// callee saved regs size (bytes) = 8
// local vars size (bytes) = 104
// fixed args size (bytes) = 0
.cfi_def_cfa 30, 8
.cfi_offset 31, -4
.cfi_offset 30, -8
.cfi_offset 24, -12
{
allocframe(#112)
r10.h = #HI(.L2@GOTOFF)
r4.h = #HI(.LPBX1@GOTOFF)
r2.h = #HI(.LC0@GOTOFF)
}
{
memw(r29+#108) = r24
r10.l = #LO(.L2@GOTOFF)
r4.l = #LO(.LPBX1@GOTOFF)
r7:6 = #1
}
# setup r24 as the GOT pointer
.L2:
r24 = pc
{
r24 = sub(r24,r10)
r2.l = #LO(.LC0@GOTOFF)
r3 = r0
r1 = #100
}
{
r4 = add(r24,r4)
r0 = r29
r2 = add(r24,r2)
}
{
r9:8 = memd(r4+#0)
}
{
r7:6 = add(r9:8,r7:6)
}
{
memd(r4+#0) = r7:6
call snprintf@PLT
}
{
r24 = memw(r29+#108)
r0 = memw(r29+#0)
}
{
deallocframe
}
{
jumpr r31
}
.cfi_endproc
.LFE19:
.size _Z3prti, .-_Z3prti
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