[Icc-mot] Mixed C/ASM pointers

[Lance B. Smith]

Jim --

Without reading up on all of this assembly interface, you might try:

;Assembly (as before)
_vmdc:	.asciz	"hello world"
	.globl	_vmdc

/* C: */
extern const char *vmdc;

void   speak(const char *msg[]);

/* ... */

	speak(&vmdc);

It seems like your way should work, but it appears the compiler may need to
go back one level of indirection.

Regards
-- Lance

-----Original Message-----
From: icc-mot-bounces at imagecraft.com [mailto:icc-mot-bounces at imagecraft.com]
On Behalf Of Jim Fiocca
Sent: Saturday, August 04, 2007 10:59 PM
To: Discussion List for ICC08/11/12/16 users. You do NOT need to subscribe
toicc-announce if you are a member of this.
Subject: [Icc-mot] Mixed C/ASM pointers

I'm having trouble referencing assembly language pointers in C.

   In the assembly file I have:
_vmdc:	.asciz	"hello world"
	.globl	_vmdc

   In the C file I have:
extern const char *vmdc;
void   speak(const char *msg);

   And then I reference it like this:
	speak(vmdc);

And what happens is, the compiler passes 0x6865 (ASCII for 'he') instead 
of the address of the array.

I can work around it with:
	speak(&vmdc);
but I use lots of assembly pointers and don't want to have to remember 
to use this bad practice all over my code.

Thanks,
  Jim


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