Working with WinARM2006xxxx (gcc v4.1.1), I am trying to access a
variable defined in a c module from an assembly file in the following
way:
ad.c:
short int ADBuffer[ADBUFFER_N]; //global
short int* pADIn _attribute_ ((section (".ocram"))) ; //global
fiq.s:
LDR R8, =RamVariableBase //#OnChipRamBase, 0xb00000
...
...
str r10, [r8, #AD_IN_PTR_OFS] //store rd ptr
this works ok, but i need to know AD_IN_PTR_OFS.
I would like to do something like:
...
...
str r10, [r8, #(pADIn-0xb00000)] //store rd ptr
my gcc parameters:
arm-elf-gcc -g -O2 -march=armv4 -mtune=arm7tdmi -nostdlib
-fomit-frame-pointer -fno-strict-aliasing -Wall -Wl,-T,crx.ld
-Wl,--section-start,.ocram=0xb00000
I would appreciate sharing your knowledge, experience regarding this
issue!
Thank You!
Euler
Euler Megyer wrote: > I would like to do something like: > str r10, [r8, #(pADIn-0xb00000)] //store rd ptr I'm unsure if I understood the intentions of your code, but to me it looks like you're basically looking for the following: ldr r9, =pADIn /* Load address of pADIn (which is a pointer) */ str r10, [r9] /* Update pADIn (i.e. pointer value) */ Stephan
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