fis-gtm/sr_port/get_symb_line.c

/****************************************************************
 *								*
 *	Copyright 2001, 2010 Fidelity Information Services, Inc	*
 *								*
 *	This source code contains the intellectual property	*
 *	of its copyright holder(s), and is made available	*
 *	under a license.  If you do not know the terms of	*
 *	the license, please stop and do not read further.	*
 *								*
 ****************************************************************/

#include "mdef.h"

#include "gtm_string.h"

#include <rtnhdr.h>
#include "stack_frame.h"
#include "error_trap.h"		/* for error_ret()/error_ret_vms() declaration */

GBLREF stack_frame		*frame_pointer;
GBLREF stack_frame		*error_frame;
GBLREF dollar_ecode_type	dollar_ecode;			/* structure containing $ECODE related information */

unsigned char *get_symb_line(unsigned char *out, unsigned char **b_line, unsigned char **ctxt)
{
	boolean_t	line_reset;
	stack_frame	*fp;
	unsigned char	*addr, *out_addr;
	unsigned char	*fpmpc, *fpctxt;

	line_reset = FALSE;
	for (fp = frame_pointer; fp; fp = fp->old_frame_pointer)
	{
#		ifdef GTM_TRIGGER
		if (NULL == fp->old_frame_pointer && (fp->type & SFT_TRIGR))
			/* Have a trigger baseframe, pick up stack continuation frame_pointer stored by base_frame() */
				fp = *(stack_frame **)(fp + 1);
#		endif
		fpmpc = fp->mpc;
		fpctxt = fp->ctxt;
		if (ADDR_IN_CODE(fpmpc, fp->rvector))
		{
			if (ctxt != 0)
				*ctxt = fpctxt;
			if (line_reset)
				addr = fpmpc + 1;
			else
				addr = fpmpc;
			out_addr = symb_line(addr, out, b_line, fp->rvector);
			assert (out < out_addr);
			return out_addr;
		} else
		{
			if (fp->type & SFT_ZTRAP || fp->type & SFT_DEV_ACT)
				line_reset = TRUE;
		}
	}
	GTMASSERT;
	return NULL;
}