Rather than using a local custom memcpy function, just call the existing optimized Blackfin version.
Signed-off-by: Mike Frysinger vapier@gentoo.org --- cpu/blackfin/start.S | 32 +++++++++++--------------------- 1 files changed, 11 insertions(+), 21 deletions(-)
diff --git a/cpu/blackfin/start.S b/cpu/blackfin/start.S index 30212e9..9b84f74 100644 --- a/cpu/blackfin/start.S +++ b/cpu/blackfin/start.S @@ -125,8 +125,9 @@ ENTRY(_start) */ r6 = 1 (x);
- /* Relocate from wherever are (FLASH/RAM/etc...) to the - * hardcoded monitor location in the end of RAM. + /* Relocate from wherever are (FLASH/RAM/etc...) to the hardcoded + * monitor location in the end of RAM. We know that memcpy() only + * uses registers, so it is safe to call here. */ serial_early_puts("Relocate"); call _get_pc; @@ -135,27 +136,16 @@ ENTRY(_start) r2.h = .Loffset; r3.l = _start; r3.h = _start; - r1 = r2 - r3; - - r0 = r0 - r1; - - cc = r0 == r3; + r2 = r2 - r3; + r1 = r0 - r2; + cc = r1 == r3; if cc jump .Lnorelocate; - r6 = 0 (x); - p1 = r0; - - p2.l = LO(CFG_MONITOR_BASE); - p2.h = HI(CFG_MONITOR_BASE); - - p3 = 0x04; - p4.l = LO(CFG_MONITOR_BASE + CFG_MONITOR_LEN); - p4.h = HI(CFG_MONITOR_BASE + CFG_MONITOR_LEN); -.Lloop1: - r1 = [p1 ++ p3]; - [p2 ++ p3] = r1; - cc=p2==p4; - if !cc jump .Lloop1; + + r0 = r3; + r2.l = LO(CFG_MONITOR_LEN); + r2.h = HI(CFG_MONITOR_LEN); + call _memcpy_ASM;
/* Initialize BSS section ... we know that memset() does not * use the BSS, so it is safe to call here. The bootrom LDR