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powerpc: do not fixup NULL ptrs

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The fixup routine must not fixup NULL pointers.
Problem can be seen by
 char *testfun(void) __attribute__((weak));
 char *(*myfun)(void) = testfun;

Then add
  printf("myfun:%p, &myfun:%p\n", myfun, &myfun);
before relocation and after relocation.
myfun should be NULL in both cases but it is not.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
This commit is contained in:
Joakim Tjernlund 2010-10-14 11:51:44 +02:00 • committed by Wolfgang Denk
parent d98b0523cf
commit d1e0b10acc
12 changed files with 36 additions and 12 deletions
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4
arch/powerpc/cpu/74xx_7xx/start.S
View file

@ -709,10 +709,12 @@ in_ram:
beq 4f
3: lwzu r4,4(r3)
lwzux r0,r4,r11
cmpwi r0,0
add r0,r0,r11
stw r10,0(r3)
beq- 5f
stw r0,0(r4)
bdnz 3b
5: bdnz 3b
4:
/* clear_bss: */
/*

4
arch/powerpc/cpu/mpc512x/start.S
View file

@ -613,10 +613,12 @@ in_ram:
beq 4f
3: lwzu r4,4(r3)
lwzux r0,r4,r11
cmpwi r0,0
add r0,r0,r11
stw r10,0(r3)
beq- 5f
stw r0,0(r4)
bdnz 3b
5: bdnz 3b
4:
clear_bss:
/*

4
arch/powerpc/cpu/mpc5xx/start.S
View file

@ -453,10 +453,12 @@ in_ram:
beq 4f
3: lwzu r4,4(r3)
lwzux r0,r4,r11
cmpwi r0,0
add r0,r0,r11
stw r10,0(r3)
beq- 5f
stw r0,0(r4)
bdnz 3b
5: bdnz 3b
4:
clear_bss:
/*

4
arch/powerpc/cpu/mpc5xxx/start.S
View file

@ -668,10 +668,12 @@ in_ram:
beq 4f
3: lwzu r4,4(r3)
lwzux r0,r4,r11
cmpwi r0,0
add r0,r0,r11
stw r10,0(r3)
beq- 5f
stw r0,0(r4)
bdnz 3b
5: bdnz 3b
4:
clear_bss:
/*

4
arch/powerpc/cpu/mpc8220/start.S
View file

@ -641,10 +641,12 @@ in_ram:
beq 4f
3: lwzu r4,4(r3)
lwzux r0,r4,r11
cmpwi r0,0
add r0,r0,r11
stw r10,0(r3)
beq- 5f
stw r0,0(r4)
bdnz 3b
5: bdnz 3b
4:
clear_bss:
/*

4
arch/powerpc/cpu/mpc824x/start.S
View file

@ -583,10 +583,12 @@ in_ram:
beq 4f
3: lwzu r4,4(r3)
lwzux r0,r4,r11
cmpwi r0,0
add r0,r0,r11
stw r10,0(r3)
beq- 5f
stw r0,0(r4)
bdnz 3b
5: bdnz 3b
4:
clear_bss:
/*

4
arch/powerpc/cpu/mpc8260/start.S
View file

@ -904,10 +904,12 @@ in_ram:
beq 4f
3: lwzu r4,4(r3)
lwzux r0,r4,r11
cmpwi r0,0
add r0,r0,r11
stw r10,0(r3)
beq- 5f
stw r0,0(r4)
bdnz 3b
5: bdnz 3b
4:
clear_bss:
/*

4
arch/powerpc/cpu/mpc83xx/start.S
View file

@ -952,10 +952,12 @@ in_ram:
beq 4f
3: lwzu r4,4(r3)
lwzux r0,r4,r11
cmpwi r0,0
add r0,r0,r11
stw r10,0(r3)
beq- 5f
stw r0,0(r4)
bdnz 3b
5: bdnz 3b
4:
#endif

4
arch/powerpc/cpu/mpc85xx/start.S
View file

@ -1037,10 +1037,12 @@ in_ram:
beq 4f
3: lwzu r4,4(r3)
lwzux r0,r4,r11
cmpwi r0,0
add r0,r0,r11
stw r10,0(r3)
beq- 5f
stw r0,0(r4)
bdnz 3b
5: bdnz 3b
4:
clear_bss:
/*

4
arch/powerpc/cpu/mpc86xx/start.S
View file

@ -727,10 +727,12 @@ in_ram:
beq 4f
3: lwzu r4,4(r3)
lwzux r0,r4,r11
cmpwi r0,0
add r0,r0,r11
stw r10,0(r3)
beq- 5f
stw r0,0(r4)
bdnz 3b
5: bdnz 3b
4:
/* clear_bss: */
/*

4
arch/powerpc/cpu/mpc8xx/start.S
View file

@ -584,10 +584,12 @@ in_ram:
beq 4f
3: lwzu r4,4(r3)
lwzux r0,r4,r11
cmpwi r0,0
add r0,r0,r11
stw r10,0(r3)
beq- 5f
stw r0,0(r4)
bdnz 3b
5: bdnz 3b
4:
clear_bss:
/*

4
arch/powerpc/cpu/ppc4xx/start.S
View file

@ -1608,10 +1608,12 @@ in_ram:
beq 4f
3: lwzu r4,4(r3)
lwzux r0,r4,r11
cmpwi r0,0
add r0,r0,r11
stw r10,0(r3)
beq- 5f
stw r0,0(r4)
bdnz 3b
5: bdnz 3b
4:
clear_bss:
/*