insight/116: assembler instructions do not match the associated source lines

insight/116: assembler instructions do not match the associated source lines

[oschiller]

>Number:         116
>Category:       insight
>Synopsis:       assembler instructions do not match the associated source lines
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Dec 04 00:03:00 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     oschi
>Release:        unknown-1.0
>Organization:
>Environment:
cygwin 1.3.3
gcc 3.0, binutils 2.11, newlib 1.9.0, insight 5.1 configured for arm-unknown-elf
>Description:
When stepping into a library function (e.g. printf()), the assembler instructions don't match the associated source lines. An example is shown below:

	51	{
-	0xb0c4	<printf>:		mov	r12, sp
-	0xb0c8	<printf+4>:		stmdb	sp!, {r0, r1, r2, r3}
-	0xb0cc	<printf+8>:		stmdb	sp!, {r11, r12, lr, pc}
-	0xb0e0	<printf+28>:		sub	r11, r12, #20	; 0x14
	52	  int ret;
	53	  va_list ap;
	54	
	55	  va_start (ap, fmt);
	56	  _stdout_r (_REENT)->_data = _REENT;
-	0xb0d0	<printf+12>:		ldr	r2, [pc, #32]	; 0xb0f8 <printf+52>
-	0xb0d4	<printf+16>:		ldr	r3, [r2]
-	0xb0d8	<printf+20>:		ldr	r1, [r3, #8]
-	0xb0dc	<printf+24>:		str	r3, [r1, #84]
	57	  ret = vfprintf (_stdout_r (_REENT), fmt, ap);
-	0xb0e4	<printf+32>:		ldr	r0, [r3, #8]
-	0xb0e8	<printf+36>:		ldr	r1, [r11, #4]
-	0xb0ec	<printf+40>:		add	r2, r11, #8	; 0x8
-	0xb0f0	<printf+44>:		bl	0xbd48 <vfprintf>
-	0xb0f4	<printf+48>:		ldmdb	r11, {r11, sp, pc}
-	0xb0f8	<printf+52>:		andeq	r2, r1, r0, lsr #9

I am not quite sure whether this is a debugger problem.
I've tried with gcc 3.0.2 as well but this didn't solve the problem.
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:

Re: insight/116: assembler instructions do not match the associated source lines

[kseitz]

Synopsis: assembler instructions do not match the associated source lines

Responsible-Changed-From-To: unassigned->kseitz
Responsible-Changed-By: kseitz
Responsible-Changed-When: Fri Jan  4 12:21:05 2002
Responsible-Changed-Why:
    assign to self
State-Changed-From-To: open->closed
State-Changed-By: kseitz
State-Changed-When: Fri Jan  4 12:21:05 2002
State-Changed-Why:
                                                                    not a bug -- see "Fix" below

http://sources.redhat.com/cgi-bin/gnatsweb.pl?cmd=view&pr=116&database=insight