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WinCE assembler (ARM)

Hi,

I'm looking for some example code for a WinCE project I'm working on.

What I'm trying to figure out is how to do is have an assembler routine that, when called, increments a value stored in a global variable (say, g_tickCnt).

This global variable is declared in and used by a C value.

Since I'm sure you'll ask, I'm working on an interrupt handler for timer overflows, so that I can have a little more range. This is inside the bootloader, so the OS isn't running. I know how to handle the interrupt, I just don't know how to get at and use the C variable inside assembly code.

If someone can give me an example of doing this in a way the MS assembler can understand, it would be appreciated :)

The chip is an IXP420 (Intel Xscale)

ttyl,

--buddy

Reply to
Buddy Smith
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// ---------- test.c

int g_tickCnt = 0xF00;

;; --------- assemble.s

IMPORT g_tickCnt

ldr r8, =g_tickCnt ; load address ldr r7, [r8] ; load the value of g_tickCnt

Reply to
ipaqwizard

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Chuck F.

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