diff options
Diffstat (limited to 'arch/mips/lib')
| -rw-r--r-- | arch/mips/lib/memcpy.S | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/arch/mips/lib/memcpy.S b/arch/mips/lib/memcpy.S index ab9f04641640..eed6e07bf222 100644 --- a/arch/mips/lib/memcpy.S +++ b/arch/mips/lib/memcpy.S @@ -89,6 +89,9 @@ /* Instruction type */ #define LD_INSN 1 #define ST_INSN 2 +/* Pretech type */ +#define SRC_PREFETCH 1 +#define DST_PREFETCH 2 /* * Wrapper to add an entry in the exception table @@ -174,6 +177,11 @@ #define LOADB(reg, addr, handler) EXC(lb, LD_INSN, reg, addr, handler) #define STOREB(reg, addr, handler) EXC(sb, ST_INSN, reg, addr, handler) +#define _PREF(hint, addr, type) PREF(hint, addr) + +#define PREFS(hint, addr) _PREF(hint, addr, SRC_PREFETCH) +#define PREFD(hint, addr) _PREF(hint, addr, DST_PREFETCH) + #ifdef CONFIG_CPU_LITTLE_ENDIAN #define LDFIRST LOADR #define LDREST LOADL @@ -237,16 +245,16 @@ __copy_user_common: * * If len < NBYTES use byte operations. */ - PREF( 0, 0(src) ) - PREF( 1, 0(dst) ) + PREFS( 0, 0(src) ) + PREFD( 1, 0(dst) ) sltu t2, len, NBYTES and t1, dst, ADDRMASK - PREF( 0, 1*32(src) ) - PREF( 1, 1*32(dst) ) + PREFS( 0, 1*32(src) ) + PREFD( 1, 1*32(dst) ) bnez t2, .Lcopy_bytes_checklen and t0, src, ADDRMASK - PREF( 0, 2*32(src) ) - PREF( 1, 2*32(dst) ) + PREFS( 0, 2*32(src) ) + PREFD( 1, 2*32(dst) ) bnez t1, .Ldst_unaligned nop bnez t0, .Lsrc_unaligned_dst_aligned @@ -258,8 +266,8 @@ __copy_user_common: SRL t0, len, LOG_NBYTES+3 # +3 for 8 units/iter beqz t0, .Lcleanup_both_aligned # len < 8*NBYTES and rem, len, (8*NBYTES-1) # rem = len % (8*NBYTES) - PREF( 0, 3*32(src) ) - PREF( 1, 3*32(dst) ) + PREFS( 0, 3*32(src) ) + PREFD( 1, 3*32(dst) ) .align 4 1: R10KCBARRIER(0(ra)) @@ -282,8 +290,8 @@ __copy_user_common: STORE(t7, UNIT(-3)(dst), .Ls_exc_p3u) STORE(t0, UNIT(-2)(dst), .Ls_exc_p2u) STORE(t1, UNIT(-1)(dst), .Ls_exc_p1u) - PREF( 0, 8*32(src) ) - PREF( 1, 8*32(dst) ) + PREFS( 0, 8*32(src) ) + PREFD( 1, 8*32(dst) ) bne len, rem, 1b nop @@ -378,10 +386,10 @@ __copy_user_common: .Lsrc_unaligned_dst_aligned: SRL t0, len, LOG_NBYTES+2 # +2 for 4 units/iter - PREF( 0, 3*32(src) ) + PREFS( 0, 3*32(src) ) beqz t0, .Lcleanup_src_unaligned and rem, len, (4*NBYTES-1) # rem = len % 4*NBYTES - PREF( 1, 3*32(dst) ) + PREFD( 1, 3*32(dst) ) 1: /* * Avoid consecutive LD*'s to the same register since some mips @@ -399,7 +407,7 @@ __copy_user_common: LDFIRST(t3, FIRST(3)(src), .Ll_exc_copy) LDREST(t2, REST(2)(src), .Ll_exc_copy) LDREST(t3, REST(3)(src), .Ll_exc_copy) - PREF( 0, 9*32(src) ) # 0 is PREF_LOAD (not streamed) + PREFS( 0, 9*32(src) ) # 0 is PREF_LOAD (not streamed) ADD src, src, 4*NBYTES #ifdef CONFIG_CPU_SB1 nop # improves slotting @@ -408,7 +416,7 @@ __copy_user_common: STORE(t1, UNIT(1)(dst), .Ls_exc_p3u) STORE(t2, UNIT(2)(dst), .Ls_exc_p2u) STORE(t3, UNIT(3)(dst), .Ls_exc_p1u) - PREF( 1, 9*32(dst) ) # 1 is PREF_STORE (not streamed) + PREFD( 1, 9*32(dst) ) # 1 is PREF_STORE (not streamed) .set reorder /* DADDI_WAR */ ADD dst, dst, 4*NBYTES bne len, rem, 1b |
