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e500 architecture and branch instructions
- From: "Claude Vittoria" <claude dot vittoria at gmail dot com>
- To: gcc-help at gcc dot gnu dot org
- Date: Tue, 4 Nov 2008 16:37:20 +0100
- Subject: e500 architecture and branch instructions
Hi,
I get some issue with branch instructions with the e500 architecture.
I wrote this code.
===============================
.section .text,"ax",@progbits
nop
nop
nop
bl 4
nop
b 4
nop
nop
bla 4
===============================
When I dump the object code I get that.
asm.o: file format elf32-powerpc
Disassembly of section .text:
00000000 <.text>:
0: 60 00 00 00 nop
4: 60 00 00 00 nop
8: 60 00 00 00 nop
c: 48 00 00 05 bl 0x10
10: 60 00 00 00 nop
14: 48 00 00 04 b 0x18
18: 60 00 00 00 nop
1c: 60 00 00 00 nop
20: 48 00 00 07 bla 0x4
===============================
In EREF: A Reference for Freescale Book E and the e500 Core b and bl
are identical in jump functionality. But the compiled code is
different and the jump is done to bad place.
Thanks for the help,
Claude