------- Comment #2 from mugita at jsdkk dot com 2006-02-14 03:37 -------
h8300-elf-gcc(3.4.3) makes this object.
0x1a0 <main>: 6d f6 mov.w r6,@-e7
- 0x1a2 <main+2>: 0d 76 mov.w r7,r6
0x1a4 <main+4>: 79 00 1d 4a mov.w #0x1d4a,r0
- 0x1a8 <main+8>: 5e 00 01 f0 jsr @0x1f0:0 ;
setjmp(jb_error)
- 0x1ac <main+12>: 5e 00 01 98 jsr @0x198:0 ;
func1()
- 0x1b0 <main+16>: 5e 00 01 88 jsr @0x188:0 ;
jump()
- 0x1b4 <main+20>: 0d 20 mov.w r2,r0
- 0x1b6 <main+22>: 6d 76 mov.w @r7+,r6
- 0x1b8 <main+24>: 54 70 rts
It works fine. run-> setjmp()->func1()->jump()->setjmp() ..
h8300-elf-gcc(4.1.0) makes this object
0x1a8 <main>: 6d f6 mov.w r6,@-e7
- 0x1aa <main+2>: 0d 76 mov.w r7,r6
- 0x1ac <main+4>: 79 02 1d 1a mov.w #0x1d1a,r2
- 0x1b0 <main+8>: 6d f2 mov.w r2,@-e7
- 0x1b2 <main+10>: 5e 00 01 f8 jsr @0x1f8:0
- 0x1b6 <main+14>: 0b 87 adds #0x2,er7
- 0x1b8 <main+16>: 5e 00 01 a0 jsr @0x1a0:0
- 0x1bc <main+20>: 5e 00 01 8c jsr @0x18c:0
- 0x1c0 <main+24>: 6d 76 mov.w @r7+,r6
- 0x1c2 <main+26>: 54 70 rts
It doesn't run correctly. run-> setjmp()->func1()->jump()-> freeze(Infinite
loop in jump())
In more complex program, freeze when run into longjmp().
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26219
