Roland McGrath wrote:
It does require some knowledge of the particular machine you're dealing
with. You can look at the .o files that go into the .so with objdump -rd
and look for the non-PIC relocations they use. If you don't know how to
identify those already, then you will probably have a hard time adjusting
the assembly code.
Well, here is some of the assembly:
.text
.globl addll
.globl subll
.globl addllx
.globl subllx
.globl shiftl
.globl shiftlr
.globl bfffo
.globl mulll
.globl addmul
.globl divll
.globl overflow
.globl hiremainder
.comm overflow,4,4
.comm hiremainder,4,4
.text
.align 8
addll:
xorl %edx,%edx
movl 4(%esp),%eax
addl 8(%esp),%eax
adcl %edx,%edx
movl %edx,overflow
ret
It's generated using macros like:
GLOBL(C(addll))
GLOBL(C(subll))
ALIGN
FUNBEGIN(addll)
INSN2(xor,l ,R(edx),R(edx)) /* clear %edx */
INSN2(mov,l ,X4 MEM_DISP(esp,4),R(eax)) /* get x */
INSN2(add,l ,X4 MEM_DISP(esp,8),R(eax)) /* add y */
INSN2(adc,l ,R(edx),R(edx)) /* %edx := carry */
INSN2(mov,l ,R(edx),C(overflow)) /* set overflow */
ret /* return %eax */
FUNEND()
If there is something easy that can be done, please let us know.
In the meantime, should this be a blocker against pari being accepted
into extras?
--
Orion Poplawski
System Administrator 303-415-9701 x222
Colorado Research Associates/NWRA FAX: 303-415-9702
3380 Mitchell Lane, Boulder CO 80301 http://www.co-ra.com
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