diff options
Diffstat (limited to 'sysdeps/sparc')
| -rw-r--r-- | sysdeps/sparc/sparc64/sparcv9b/memcpy.S | 567 |
1 files changed, 231 insertions, 336 deletions
diff --git a/sysdeps/sparc/sparc64/sparcv9b/memcpy.S b/sysdeps/sparc/sparc64/sparcv9b/memcpy.S index ccbc3fd1d8..8b70b0a932 100644 --- a/sysdeps/sparc/sparc64/sparcv9b/memcpy.S +++ b/sysdeps/sparc/sparc64/sparcv9b/memcpy.S @@ -20,32 +20,36 @@ 02111-1307 USA. */ #include <sysdep.h> + #define ASI_BLK_P 0xf0 #define FPRS_FEF 0x04 #define VISEntryHalf rd %fprs, %o5; wr %g0, FPRS_FEF, %fprs #define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs -#define SMALL_COPY_USES_FPU #ifndef XCC #define USE_BPR #define XCC xcc #endif + .register %g2,#scratch + .register %g3,#scratch + .register %g6,#scratch + .text .align 32 ENTRY(bcopy) - sub %o1, %o0, %o4 /* IEU0 Group */ - mov %o0, %g3 /* IEU1 */ - cmp %o4, %o2 /* IEU1 Group */ - mov %o1, %o0 /* IEU0 */ - bgeu,pt %XCC, 100f /* CTI */ - mov %g3, %o1 /* IEU0 Group */ + sub %o1, %o0, %o4 + mov %o0, %g4 + cmp %o4, %o2 + mov %o1, %o0 + bgeu,pt %XCC, 100f + mov %g4, %o1 #ifndef USE_BPR - srl %o2, 0, %o2 /* IEU1 */ + srl %o2, 0, %o2 #endif - brnz,pn %o2, 220f /* CTI Group */ - add %o0, %o2, %o0 /* IEU0 */ + brnz,pn %o2, 220f + add %o0, %o2, %o0 retl nop END(bcopy) @@ -68,373 +72,264 @@ END(bcopy) ENTRY(memcpy) 100: /* %o0=dst, %o1=src, %o2=len */ -#ifndef __KERNEL__ - /* Save away original 'dst' for memcpy return value. */ - mov %o0, %g3 ! A0 Group -#endif - /* Anything to copy at all? */ - cmp %o2, 0 ! A1 - ble,pn %XCC, 102f ! BR - - /* Extremely small copy? */ -218: cmp %o2, 31 ! A0 Group - ble,pn %XCC, 101f ! BR - - /* Large enough to use unrolled prefetch loops? */ - cmp %o2, 0x100 ! A1 - bge,a,pt %XCC, 103f ! BR Group - andcc %o0, 0x3f, %g2 ! A0 + mov %o0, %g5 + cmp %o2, 0 + be,pn %XCC, out +218: or %o0, %o1, %o3 + cmp %o2, 16 + bleu,a,pn %XCC, small_copy + or %o3, %o2, %o3 - ba,pt %XCC, 108f ! BR Group - andcc %o0, 0x7, %g2 ! A0 + cmp %o2, 256 + blu,pt %XCC, medium_copy + andcc %o3, 0x7, %g0 - .align 32 -101: - /* Copy %o2 bytes from src to dst, one byte at a time. */ - ldub [%o1 + 0x00], %o3 ! MS Group - add %o1, 0x1, %o1 ! A0 - add %o0, 0x1, %o0 ! A1 - subcc %o2, 1, %o2 ! A0 Group - - bg,pt %XCC, 101b ! BR - stb %o3, [%o0 + -1] ! MS Group (1-cycle stall) - -102: -#ifdef __KERNEL__ - retl ! BR Group (0-4 cycle stall) - clr %o0 ! A0 -#else - retl ! BR Group (0-4 cycle stall) - mov %g3, %o0 ! A0 -#endif + ba,pt %xcc, enter + andcc %o0, 0x3f, %g2 - /* Here len >= (6 * 64) and condition codes reflect execution + /* Here len >= 256 and condition codes reflect execution * of "andcc %o0, 0x7, %g2", done by caller. */ .align 64 -103: +enter: /* Is 'dst' already aligned on an 64-byte boundary? */ - be,pt %XCC, 2f ! BR + be,pt %XCC, 2f /* Compute abs((dst & 0x3f) - 0x40) into %g2. This is the number * of bytes to copy to make 'dst' 64-byte aligned. We pre- * subtract this from 'len'. */ - sub %g2, 0x40, %g2 ! A0 Group - sub %g0, %g2, %g2 ! A0 Group - sub %o2, %g2, %o2 ! A0 Group + sub %g2, 0x40, %g2 + sub %g0, %g2, %g2 + sub %o2, %g2, %o2 /* Copy %g2 bytes from src to dst, one byte at a time. */ -1: ldub [%o1 + 0x00], %o3 ! MS (Group) - add %o1, 0x1, %o1 ! A1 - add %o0, 0x1, %o0 ! A0 Group - subcc %g2, 0x1, %g2 ! A1 +1: ldub [%o1 + 0x00], %o3 + add %o1, 0x1, %o1 + add %o0, 0x1, %o0 + subcc %g2, 0x1, %g2 - bg,pt %XCC, 1b ! BR Group - stb %o3, [%o0 + -1] ! MS Group + bg,pt %XCC, 1b + stb %o3, [%o0 + -1] -2: VISEntryHalf ! MS+MS - and %o1, 0x7, %g1 ! A1 - ba,pt %XCC, 104f ! BR - alignaddr %o1, %g0, %o1 ! MS (Break-after) +2: VISEntryHalf + and %o1, 0x7, %g1 + ba,pt %xcc, begin + alignaddr %o1, %g0, %o1 .align 64 -104: - prefetch [%o1 + 0x000], #one_read ! MS Group1 - prefetch [%o1 + 0x040], #one_read ! MS Group2 - andn %o2, (0x40 - 1), %o4 ! A0 - prefetch [%o1 + 0x080], #one_read ! MS Group3 - cmp %o4, 0x140 ! A0 - prefetch [%o1 + 0x0c0], #one_read ! MS Group4 - ldd [%o1 + 0x000], %f0 ! MS Group5 (%f0 results at G8) - bge,a,pt %XCC, 1f ! BR - - prefetch [%o1 + 0x100], #one_read ! MS Group6 -1: ldd [%o1 + 0x008], %f2 ! AX (%f2 results at G9) - cmp %o4, 0x180 ! A1 - bge,a,pt %XCC, 1f ! BR - prefetch [%o1 + 0x140], #one_read ! MS Group7 -1: ldd [%o1 + 0x010], %f4 ! AX (%f4 results at G10) - cmp %o4, 0x1c0 ! A1 - bge,a,pt %XCC, 1f ! BR - - prefetch [%o1 + 0x180], #one_read ! MS Group8 -1: faligndata %f0, %f2, %f16 ! FGA Group9 (%f16 at G12) - ldd [%o1 + 0x018], %f6 ! AX (%f6 results at G12) - faligndata %f2, %f4, %f18 ! FGA Group10 (%f18 results at G13) - ldd [%o1 + 0x020], %f8 ! MS (%f8 results at G13) - faligndata %f4, %f6, %f20 ! FGA Group12 (1-cycle stall,%f20 at G15) - ldd [%o1 + 0x028], %f10 ! MS (%f10 results at G15) - faligndata %f6, %f8, %f22 ! FGA Group13 (%f22 results at G16) - - ldd [%o1 + 0x030], %f12 ! MS (%f12 results at G16) - faligndata %f8, %f10, %f24 ! FGA Group15 (1-cycle stall,%f24 at G18) - ldd [%o1 + 0x038], %f14 ! MS (%f14 results at G18) - faligndata %f10, %f12, %f26 ! FGA Group16 (%f26 results at G19) - ldd [%o1 + 0x040], %f0 ! MS (%f0 results at G19) - - /* We only use the first loop if len > (7 * 64). */ - subcc %o4, 0x1c0, %o4 ! A0 Group17 - bg,pt %XCC, 105f ! BR - add %o1, 0x40, %o1 ! A1 - - add %o4, 0x140, %o4 ! A0 Group18 - ba,pt %XCC, 106f ! BR - srl %o4, 6, %o3 ! A0 Group19 - nop - nop - nop - nop - nop - - nop - nop - - /* This loop performs the copy and queues new prefetches. - * We drop into the second loop when len <= (5 * 64). Note - * that this (5 * 64) factor has been subtracted from len - * already. - */ -105: - ldd [%o1 + 0x008], %f2 ! MS Group2 (%f2 results at G5) - faligndata %f12, %f14, %f28 ! FGA (%f28 results at G5) - ldd [%o1 + 0x010], %f4 ! MS Group3 (%f4 results at G6) - faligndata %f14, %f0, %f30 ! FGA Group4 (1-cycle stall, %f30 at G7) - stda %f16, [%o0] ASI_BLK_P ! MS - ldd [%o1 + 0x018], %f6 ! AX (%f6 results at G7) - - faligndata %f0, %f2, %f16 ! FGA Group12 (7-cycle stall) - ldd [%o1 + 0x020], %f8 ! MS (%f8 results at G15) - faligndata %f2, %f4, %f18 ! FGA Group13 (%f18 results at G16) - ldd [%o1 + 0x028], %f10 ! MS (%f10 results at G16) - faligndata %f4, %f6, %f20 ! FGA Group14 (%f20 results at G17) - ldd [%o1 + 0x030], %f12 ! MS (%f12 results at G17) - faligndata %f6, %f8, %f22 ! FGA Group15 (%f22 results at G18) - ldd [%o1 + 0x038], %f14 ! MS (%f14 results at G18) - - faligndata %f8, %f10, %f24 ! FGA Group16 (%f24 results at G19) - ldd [%o1 + 0x040], %f0 ! AX (%f0 results at G19) - prefetch [%o1 + 0x180], #one_read ! MS - faligndata %f10, %f12, %f26 ! FGA Group17 (%f26 results at G20) - subcc %o4, 0x40, %o4 ! A0 - add %o1, 0x40, %o1 ! A1 - bg,pt %XCC, 105b ! BR - add %o0, 0x40, %o0 ! A0 Group18 - - mov 5, %o3 ! A1 - - /* This loop performs on the copy, no new prefetches are - * queued. We do things this way so that we do not perform - * any spurious prefetches past the end of the src buffer. - */ -106: - ldd [%o1 + 0x008], %f2 ! MS - faligndata %f12, %f14, %f28 ! FGA Group2 - ldd [%o1 + 0x010], %f4 ! MS - faligndata %f14, %f0, %f30 ! FGA Group4 (1-cycle stall) - stda %f16, [%o0] ASI_BLK_P ! MS - ldd [%o1 + 0x018], %f6 ! AX - faligndata %f0, %f2, %f16 ! FGA Group12 (7-cycle stall) - - ldd [%o1 + 0x020], %f8 ! MS - faligndata %f2, %f4, %f18 ! FGA Group13 - ldd [%o1 + 0x028], %f10 ! MS - faligndata %f4, %f6, %f20 ! FGA Group14 - ldd [%o1 + 0x030], %f12 ! MS - faligndata %f6, %f8, %f22 ! FGA Group15 - ldd [%o1 + 0x038], %f14 ! MS - faligndata %f8, %f10, %f24 ! FGA Group16 - - ldd [%o1 + 0x040], %f0 ! AX - faligndata %f10, %f12, %f26 ! FGA Group17 - subcc %o3, 0x01, %o3 ! A0 - add %o1, 0x40, %o1 ! A1 - bg,pt %XCC, 106b ! BR - add %o0, 0x40, %o0 ! A0 Group18 +begin: + prefetch [%o1 + 0x000], #one_read + prefetch [%o1 + 0x040], #one_read + andn %o2, (0x40 - 1), %o4 + prefetch [%o1 + 0x080], #one_read + prefetch [%o1 + 0x0c0], #one_read + ldd [%o1 + 0x000], %f0 + prefetch [%o1 + 0x100], #one_read + ldd [%o1 + 0x008], %f2 + prefetch [%o1 + 0x140], #one_read + ldd [%o1 + 0x010], %f4 + prefetch [%o1 + 0x180], #one_read + faligndata %f0, %f2, %f16 + ldd [%o1 + 0x018], %f6 + faligndata %f2, %f4, %f18 + ldd [%o1 + 0x020], %f8 + faligndata %f4, %f6, %f20 + ldd [%o1 + 0x028], %f10 + faligndata %f6, %f8, %f22 + + ldd [%o1 + 0x030], %f12 + faligndata %f8, %f10, %f24 + ldd [%o1 + 0x038], %f14 + faligndata %f10, %f12, %f26 + ldd [%o1 + 0x040], %f0 + + sub %o4, 0x80, %o4 + add %o1, 0x40, %o1 + ba,pt %xcc, loop + srl %o4, 6, %o3 + + .align 64 +loop: + ldd [%o1 + 0x008], %f2 + faligndata %f12, %f14, %f28 + ldd [%o1 + 0x010], %f4 + faligndata %f14, %f0, %f30 + stda %f16, [%o0] ASI_BLK_P + ldd [%o1 + 0x018], %f6 + faligndata %f0, %f2, %f16 + + ldd [%o1 + 0x020], %f8 + faligndata %f2, %f4, %f18 + ldd [%o1 + 0x028], %f10 + faligndata %f4, %f6, %f20 + ldd [%o1 + 0x030], %f12 + faligndata %f6, %f8, %f22 + ldd [%o1 + 0x038], %f14 + faligndata %f8, %f10, %f24 + + ldd [%o1 + 0x040], %f0 + prefetch [%o1 + 0x180], #one_read + faligndata %f10, %f12, %f26 + subcc %o3, 0x01, %o3 + add %o1, 0x40, %o1 + bg,pt %XCC, loop + add %o0, 0x40, %o0 /* Finally we copy the last full 64-byte block. */ - ldd [%o1 + 0x008], %f2 ! MS - faligndata %f12, %f14, %f28 ! FGA - ldd [%o1 + 0x010], %f4 ! MS Group19 - faligndata %f14, %f0, %f30 ! FGA - stda %f16, [%o0] ASI_BLK_P ! MS Group20 - ldd [%o1 + 0x018], %f6 ! AX - faligndata %f0, %f2, %f16 ! FGA Group11 (7-cycle stall) - ldd [%o1 + 0x020], %f8 ! MS - faligndata %f2, %f4, %f18 ! FGA Group12 - ldd [%o1 + 0x028], %f10 ! MS - faligndata %f4, %f6, %f20 ! FGA Group13 - ldd [%o1 + 0x030], %f12 ! MS - faligndata %f6, %f8, %f22 ! FGA Group14 - ldd [%o1 + 0x038], %f14 ! MS - faligndata %f8, %f10, %f24 ! FGA Group15 - cmp %g1, 0 ! A0 - be,pt %XCC, 1f ! BR - add %o0, 0x40, %o0 ! A1 - ldd [%o1 + 0x040], %f0 ! MS -1: faligndata %f10, %f12, %f26 ! FGA Group16 - faligndata %f12, %f14, %f28 ! FGA Group17 - faligndata %f14, %f0, %f30 ! FGA Group18 - stda %f16, [%o0] ASI_BLK_P ! MS - add %o0, 0x40, %o0 ! A0 - add %o1, 0x40, %o1 ! A1 - membar #Sync ! MS Group26 (7-cycle stall) +loopfini: + ldd [%o1 + 0x008], %f2 + faligndata %f12, %f14, %f28 + ldd [%o1 + 0x010], %f4 + faligndata %f14, %f0, %f30 + stda %f16, [%o0] ASI_BLK_P + ldd [%o1 + 0x018], %f6 + faligndata %f0, %f2, %f16 + ldd [%o1 + 0x020], %f8 + faligndata %f2, %f4, %f18 + ldd [%o1 + 0x028], %f10 + faligndata %f4, %f6, %f20 + ldd [%o1 + 0x030], %f12 + faligndata %f6, %f8, %f22 + ldd [%o1 + 0x038], %f14 + faligndata %f8, %f10, %f24 + cmp %g1, 0 + be,pt %XCC, 1f + add %o0, 0x40, %o0 + ldd [%o1 + 0x040], %f0 +1: faligndata %f10, %f12, %f26 + faligndata %f12, %f14, %f28 + faligndata %f14, %f0, %f30 + stda %f16, [%o0] ASI_BLK_P + add %o0, 0x40, %o0 + add %o1, 0x40, %o1 + membar #Sync /* Now we copy the (len modulo 64) bytes at the end. * Note how we borrow the %f0 loaded above. * * Also notice how this code is careful not to perform a - * load past the end of the src buffer just like similar - * code found in 'toosmall' processing. + * load past the end of the src buffer. */ - and %o2, 0x3f, %o2 ! A0 Group - andcc %o2, 0x38, %g2 ! A0 Group - be,pn %XCC, 107f ! BR - subcc %g2, 0x8, %g2 ! A1 - be,pn %XCC, 107f ! BR Group - cmp %g1, 0 ! A0 - - be,a,pt %XCC, 1f ! BR Group - ldd [%o1 + 0x00], %f0 ! MS - -1: ldd [%o1 + 0x08], %f2 ! MS Group - add %o1, 0x8, %o1 ! A0 - sub %o2, 0x8, %o2 ! A1 - subcc %g2, 0x8, %g2 ! A0 Group - faligndata %f0, %f2, %f8 ! FGA Group - std %f8, [%o0 + 0x00] ! MS (XXX does it stall here? XXX) - be,pn %XCC, 107f ! BR - add %o0, 0x8, %o0 ! A0 - ldd [%o1 + 0x08], %f0 ! MS Group - add %o1, 0x8, %o1 ! A0 - sub %o2, 0x8, %o2 ! A1 - subcc %g2, 0x8, %g2 ! A0 Group - faligndata %f2, %f0, %f8 ! FGA - std %f8, [%o0 + 0x00] ! MS (XXX does it stall here? XXX) - bne,pn %XCC, 1b ! BR - add %o0, 0x8, %o0 ! A0 Group +loopend: + and %o2, 0x3f, %o2 + andcc %o2, 0x38, %g2 + be,pn %XCC, endcruft + subcc %g2, 0x8, %g2 + be,pn %XCC, endcruft + cmp %g1, 0 + + be,a,pt %XCC, 1f + ldd [%o1 + 0x00], %f0 + +1: ldd [%o1 + 0x08], %f2 + add %o1, 0x8, %o1 + sub %o2, 0x8, %o2 + subcc %g2, 0x8, %g2 + faligndata %f0, %f2, %f8 + std %f8, [%o0 + 0x00] + be,pn %XCC, endcruft + add %o0, 0x8, %o0 + ldd [%o1 + 0x08], %f0 + add %o1, 0x8, %o1 + sub %o2, 0x8, %o2 + subcc %g2, 0x8, %g2 + faligndata %f2, %f0, %f8 + std %f8, [%o0 + 0x00] + bne,pn %XCC, 1b + add %o0, 0x8, %o0 /* If anything is left, we copy it one byte at a time. * Note that %g1 is (src & 0x3) saved above before the * alignaddr was performed. */ -107: +endcruft: cmp %o2, 0 add %o1, %g1, %o1 VISExitHalf - be,pn %XCC, 102b - nop - ba,a,pt %XCC, 101b - - /* If we get here, then 32 <= len < (6 * 64) */ -108: + be,pn %XCC, out + sub %o0, %o1, %o3 -#ifdef SMALL_COPY_USES_FPU - - /* Is 'dst' already aligned on an 8-byte boundary? */ - be,pt %XCC, 2f ! BR Group - - /* Compute abs((dst & 7) - 8) into %g2. This is the number - * of bytes to copy to make 'dst' 8-byte aligned. We pre- - * subtract this from 'len'. - */ - sub %g2, 0x8, %g2 ! A0 - sub %g0, %g2, %g2 ! A0 Group (reg-dep) - sub %o2, %g2, %o2 ! A0 Group (reg-dep) - - /* Copy %g2 bytes from src to dst, one byte at a time. */ -1: ldub [%o1 + 0x00], %o3 ! MS (Group) (%o3 in 3 cycles) - add %o1, 0x1, %o1 ! A1 - add %o0, 0x1, %o0 ! A0 Group - subcc %g2, 0x1, %g2 ! A1 - - bg,pt %XCC, 1b ! BR Group - stb %o3, [%o0 + -1] ! MS Group + andcc %g1, 0x7, %g0 + bne,pn %icc, small_copy_unaligned + andcc %o2, 0x8, %g0 + be,pt %icc, 1f + nop + ldx [%o1], %o5 + stx %o5, [%o1 + %o3] + add %o1, 0x8, %o1 -2: VISEntryHalf ! MS+MS +1: andcc %o2, 0x4, %g0 + be,pt %icc, 1f + nop + lduw [%o1], %o5 + stw %o5, [%o1 + %o3] + add %o1, 0x4, %o1 - /* Compute (len - (len % 8)) into %g2. This is guarenteed - * to be nonzero. - */ - andn %o2, 0x7, %g2 ! A0 Group - - /* You may read this and believe that it allows reading - * one 8-byte longword past the end of src. It actually - * does not, as %g2 is subtracted as loads are done from - * src, so we always stop before running off the end. - * Also, we are guarenteed to have at least 0x10 bytes - * to move here. - */ - sub %g2, 0x8, %g2 ! A0 Group (reg-dep) - alignaddr %o1, %g0, %g1 ! MS (Break-after) - ldd [%g1 + 0x00], %f0 ! MS Group (1-cycle stall) - add %g1, 0x8, %g1 ! A0 - -1: ldd [%g1 + 0x00], %f2 ! MS Group - add %g1, 0x8, %g1 ! A0 - sub %o2, 0x8, %o2 ! A1 - subcc %g2, 0x8, %g2 ! A0 Group - - faligndata %f0, %f2, %f8 ! FGA Group (1-cycle stall) - std %f8, [%o0 + 0x00] ! MS Group (2-cycle stall) - add %o1, 0x8, %o1 ! A0 - be,pn %XCC, 2f ! BR - - add %o0, 0x8, %o0 ! A1 - ldd [%g1 + 0x00], %f0 ! MS Group - add %g1, 0x8, %g1 ! A0 - sub %o2, 0x8, %o2 ! A1 - - subcc %g2, 0x8, %g2 ! A0 Group - faligndata %f2, %f0, %f8 ! FGA Group (1-cycle stall) - std %f8, [%o0 + 0x00] ! MS Group (2-cycle stall) - add %o1, 0x8, %o1 ! A0 - - bne,pn %XCC, 1b ! BR - add %o0, 0x8, %o0 ! A1 - - /* Nothing left to copy? */ -2: cmp %o2, 0 ! A0 Group - VISExitHalf ! A0+MS - be,pn %XCC, 102b ! BR Group - nop ! A0 - ba,a,pt %XCC, 101b ! BR Group - -#else /* !(SMALL_COPY_USES_FPU) */ - - xor %o1, %o0, %g2 - andcc %g2, 0x7, %g0 - bne,pn %XCC, 101b - andcc %o1, 0x7, %g2 +1: andcc %o2, 0x2, %g0 + be,pt %icc, 1f + nop + lduh [%o1], %o5 + sth %o5, [%o1 + %o3] + add %o1, 0x2, %o1 - be,pt %XCC, 2f - sub %g2, 0x8, %g2 - sub %g0, %g2, %g2 - sub %o2, %g2, %o2 +1: andcc %o2, 0x1, %g0 + be,pt %icc, out + nop + ldub [%o1], %o5 + ba,pt %xcc, out + stb %o5, [%o1 + %o3] + +medium_copy: /* 16 < len <= 64 */ + bne,pn %XCC, small_copy_unaligned + sub %o0, %o1, %o3 + +medium_copy_aligned: + andn %o2, 0x7, %o4 + and %o2, 0x7, %o2 +1: subcc %o4, 0x8, %o4 + ldx [%o1], %o5 + stx %o5, [%o1 + %o3] + bgu,pt %XCC, 1b + add %o1, 0x8, %o1 + andcc %o2, 0x4, %g0 + be,pt %XCC, 1f + nop + sub %o2, 0x4, %o2 + lduw [%o1], %o5 + stw %o5, [%o1 + %o3] + add %o1, 0x4, %o1 +1: cmp %o2, 0 + be,pt %XCC, out + nop + ba,pt %xcc, small_copy_unaligned + nop -1: ldub [%o1 + 0x00], %o3 - add %o1, 0x1, %o1 - add %o0, 0x1, %o0 - subcc %g2, 0x1, %g2 - bg,pt %XCC, 1b - stb %o3, [%o0 + -1] +small_copy: /* 0 < len <= 16 */ + andcc %o3, 0x3, %g0 + bne,pn %XCC, small_copy_unaligned + sub %o0, %o1, %o3 -2: andn %o2, 0x7, %g2 - sub %o2, %g2, %o2 +small_copy_aligned: + subcc %o2, 4, %o2 + lduw [%o1], %g1 + stw %g1, [%o1 + %o3] + bgu,pt %XCC, small_copy_aligned + add %o1, 4, %o1 -3: ldx [%o1 + 0x00], %o3 - add %o1, 0x8, %o1 - add %o0, 0x8, %o0 - subcc %g2, 0x8, %g2 - bg,pt %XCC, 3b - stx %o3, [%o0 + -8] +out: retl + mov %g5, %o0 - cmp %o2, 0 - bne,pn %XCC, 101b - nop - ba,a,pt %XCC, 102b + .align 32 +small_copy_unaligned: + subcc %o2, 1, %o2 + ldub [%o1], %g1 + stb %g1, [%o1 + %o3] + bgu,pt %XCC, small_copy_unaligned + add %o1, 1, %o1 + retl + mov %g5, %o0 -#endif /* !(SMALL_COPY_USES_FPU) */ END(memcpy) #define RMOVE_BIGCHUNK(src, dst, offset, t0, t1, t2, t3) \ @@ -511,11 +406,11 @@ END(memcpy) .align 32 ENTRY(memmove) - mov %o0, %g3 + mov %o0, %g5 #ifndef USE_BPR srl %o2, 0, %o2 /* IEU1 Group */ #endif - brz,pn %o2, 102b /* CTI Group */ + brz,pn %o2, out /* CTI Group */ sub %o0, %o1, %o4 /* IEU0 */ cmp %o4, %o2 /* IEU1 Group */ bgeu,pt %XCC, 218b /* CTI */ |