This is the mail archive of the
ecos-discuss@sources.redhat.com
mailing list for the eCos project.
hal_platform_setup memory copying code
- From: ecosrtos ecosrtos <ecosrtos at gmail dot com>
- To: ecos-discuss at ecos dot sourceware dot org
- Date: Mon, 31 Jan 2005 14:07:24 -0800
- Subject: [ECOS] hal_platform_setup memory copying code
- Reply-to: ecosrtos ecosrtos <ecosrtos at gmail dot com>
Hi
How do r1 and r0 get incremented in the following code. Is it implicit
in some instruction?
#if defined(CYG_HAL_STARTUP_ROMRAM)
ldr r0,=0x01000000 // Relocate FLASH/ROM to on-chip RAM
ldr r1,=0x02000000 // RAM base & length
ldr r2,=0x02010000
20: ldr r3,[r0],#4
str r3,[r1],#4
cmp r1,r2
bne 20b
ldr r0,=30f
mov pc,r0
30:
#endif
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss