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Re: [Lightning] Porting GNU Smalltalk to lightning 2

From: Holger Hans Peter Freyther
Subject: Re: [Lightning] Porting GNU Smalltalk to lightning 2
Date: Fri, 21 Nov 2014 22:54:50 +0100
User-agent: Mutt/1.5.23 (2014-03-12)

On Thu, Nov 20, 2014 at 09:40:12PM -0200, Paulo César Pereira de Andrade wrote:

Good Evening,


I natively compiled on the TI Davinci and run make check. I am
just reporting the first error here. It looks like str has the
registers mixed up as well? You probably want to store to [r12]
the value from register r4?

Starting program: /home/root/lightning/check/.libs/lightning ldsti.tst
Cannot access memory at address 0x0
Alignment trap: lightning (8325) PC=0xb6faf050 Instr=0xe584c000 
Address=0x00000001 FSR 0x801

Program received signal SIGSEGV, Segmentation fault.
0xb6faf050 in ?? ()
(gdb) bt
#0  0xb6faf050 in ?? ()
#1  0xe1cc20f0 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) x/10i $pc-16 
   0xb6faf040:  mov     r12, #1056964608        ; 0x3f000000
   0xb6faf044:  str     r12, [r11, #-8]
   0xb6faf048:  ldr     r12, [r11, #-8]
   0xb6faf04c:  ldr     r6, [pc, #24]   ; 0xb6faf06c
=> 0xb6faf050:  str     r12, [r4]
   0xb6faf054:  mov     r2, #0
   0xb6faf058:  ldr     r3, [pc, #16]   ; 0xb6faf070
   0xb6faf05c:  strd    r2, [r11, #-8]
   0xb6faf060:  ldr     lr, [pc, #12]   ; 0xb6faf074
   0xb6faf064:  ldrd    r2, [r11, #-8]
(gdb) info reg
r0             0x0      0
r1             0xbefffd84       3204447620
r2             0x44156bb8       1142254520
r3             0x0      0
r4             0x1      1
r5             0x80000001       2147483649
r6             0xe59fdfe0       3852460000
r7             0xe14b20f8       3779797240
r8             0x0      0
r9             0xffe    4094
r10            0x23a38  145976
r11            0xbeffdbc8       3204438984
r12            0x3f000000       1056964608
sp             0xbeffdb80       0xbeffdb80
lr             0xe1cc20f0       3788251376
pc             0xb6faf050       0xb6faf050
cpsr           0x60000010       1610612752

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