[uclibc-ng-devel] uClibc-ng - small C library for embedded systems branch master updated. 00ac7acc665db429e476a4047ef53cd8df6f5999

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "uClibc-ng - small C library for embedded systems". The branch, master has been updated via 00ac7acc665db429e476a4047ef53cd8df6f5999 (commit) from 8d124ba111557ae7891fed91538e34307f713b6f (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit 00ac7acc665db429e476a4047ef53cd8df6f5999 Author: Claudiu Zissulescu <claziss(a)synopsys.com> Date: Mon Jul 20 17:12:32 2015 +0300 ARCv2: update memset() so it could be used without double load/stores Existing version of memset() relies on existence of 64-bit load/stores. While ARC HS38 may not have those instructions implemented in SoC. Proposed implementation checks if "-mno-ll64" option was passed to gcc (for ARCv2 "-mll64" is set implicitly by default) by checking __LL64__ definition and if it is not defined uses 32-bit load/stores. Signed-off-by: Claudiu Zissulescu <claziss(a)synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin(a)synopsys.com> Cc: Vineet Gupta <vgupta(a)synopsys.com> ----------------------------------------------------------------------- Summary of changes: libc/string/arc/arcv2/memset.S | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/libc/string/arc/arcv2/memset.S b/libc/string/arc/arcv2/memset.S index d076ad1..0918d37 100644 --- a/libc/string/arc/arcv2/memset.S +++ b/libc/string/arc/arcv2/memset.S @@ -52,6 +52,7 @@ ENTRY(memset) lpnz @.Lset64bytes ;; LOOP START PREWRITE(r3, 64) ;Prefetch the next write location +#ifdef __LL64__ std.ab r4, [r3, 8] std.ab r4, [r3, 8] std.ab r4, [r3, 8] @@ -60,16 +61,45 @@ ENTRY(memset) std.ab r4, [r3, 8] std.ab r4, [r3, 8] std.ab r4, [r3, 8] +#else + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] +#endif .Lset64bytes: lsr.f lp_count, r2, 5 ;Last remaining max 124 bytes lpnz .Lset32bytes ;; LOOP START prefetchw [r3, 32] ;Prefetch the next write location +#ifdef __LL64__ std.ab r4, [r3, 8] std.ab r4, [r3, 8] std.ab r4, [r3, 8] std.ab r4, [r3, 8] +#else + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] + st.ab r4, [r3, 4] +#endif .Lset32bytes: and.f lp_count, r2, 0x1F ;Last remaining 31 bytes hooks/post-receive -- uClibc-ng - small C library for embedded systems