/* SPDX-License-Identifier: GPL-2.0 */ /* NG2memcpy.S: Niagara-2 optimized memcpy. * * Copyright (C) 2007 David S. Miller (davem@davemloft.net) */ #ifdef __KERNEL__ #include <linux/linkage.h> #include <asm/visasm.h> #include <asm/asi.h> #define GLOBAL_SPARE %g7 #else #define ASI_PNF 0x82 #define ASI_BLK_P 0xf0 #define ASI_BLK_INIT_QUAD_LDD_P 0xe2 #define FPRS_FEF 0x04 #ifdef MEMCPY_DEBUG #define VISEntryHalf rd %fprs, %o5; wr %g0, FPRS_FEF, %fprs; \ clr %g1; clr %g2; clr %g3; clr %g5; subcc %g0, %g0, %g0; #define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs #else #define VISEntryHalf rd %fprs, %o5; wr %g0, FPRS_FEF, %fprs #define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs #endif #define GLOBAL_SPARE %g5 #endif #ifndef STORE_ASI #ifndef SIMULATE_NIAGARA_ON_NON_NIAGARA #define STORE_ASI ASI_BLK_INIT_QUAD_LDD_P #else #define STORE_ASI 0x80 /* ASI_P */ #endif #endif #ifndef EX_LD #define EX_LD(x,y) x #endif #ifndef EX_LD_FP #define EX_LD_FP(x,y) x #endif #ifndef EX_ST #define EX_ST(x,y) x #endif #ifndef EX_ST_FP #define EX_ST_FP(x,y) x #endif #ifndef LOAD #define LOAD(type,addr,dest) type [addr], dest #endif #ifndef LOAD_BLK #define LOAD_BLK(addr,dest) ldda [addr] ASI_BLK_P, dest #endif #ifndef STORE #ifndef MEMCPY_DEBUG #define STORE(type,src,addr) type src, [addr] #else #define STORE(type,src,addr) type##a src, [addr] 0x80 #endif #endif #ifndef STORE_BLK #define STORE_BLK(src,addr) stda src, [addr] ASI_BLK_P #endif #ifndef STORE_INIT #define STORE_INIT(src,addr) stxa src, [addr] STORE_ASI #endif #ifndef FUNC_NAME #define FUNC_NAME NG2memcpy #endif #ifndef PREAMBLE #define PREAMBLE #endif #ifndef XCC #define XCC xcc #endif #define FREG_FROB(x0, x1, x2, x3, x4, x5, x6, x7, x8) \ faligndata %x0, %x1, %f0; \ faligndata %x1, %x2, %f2; \ faligndata %x2, %x3, %f4; \ faligndata %x3, %x4, %f6; \ faligndata %x4, %x5, %f8; \ faligndata %x5, %x6, %f10; \ faligndata %x6, %x7, %f12; \ faligndata %x7, %x8, %f14; #define FREG_MOVE_1(x0) \ fsrc2 %x0, %f0; #define FREG_MOVE_2(x0, x1) \ fsrc2 %x0, %f0; \ fsrc2 %x1, %f2; #define FREG_MOVE_3(x0, x1, x2) \ fsrc2 %x0, %f0; \ fsrc2 %x1, %f2; \ fsrc2 %x2, %f4; #define FREG_MOVE_4(x0, x1, x2, x3) \ fsrc2 %x0, %f0; \ fsrc2 %x1, %f2; \ fsrc2 %x2, %f4; \ fsrc2 %x3, %f6; #define FREG_MOVE_5(x0, x1, x2, x3, x4) \ fsrc2 %x0, %f0; \ fsrc2 %x1, %f2; \ fsrc2 %x2, %f4; \ fsrc2 %x3, %f6; \ fsrc2 %x4, %f8; #define FREG_MOVE_6(x0, x1, x2, x3, x4, x5) \ fsrc2 %x0, %f0; \ fsrc2 %x1, %f2; \ fsrc2 %x2, %f4; \ fsrc2 %x3, %f6; \ fsrc2 %x4, %f8; \ fsrc2 %x5, %f10; #define FREG_MOVE_7(x0, x1, x2, x3, x4, x5, x6) \ fsrc2 %x0, %f0; \ fsrc2 %x1, %f2; \ fsrc2 %x2, %f4; \ fsrc2 %x3, %f6; \ fsrc2 %x4, %f8; \ fsrc2 %x5, %f10; \ fsrc2 %x6, %f12; #define FREG_MOVE_8(x0, x1, x2, x3, x4, x5, x6, x7) \ fsrc2 %x0, %f0; \ fsrc2 %x1, %f2; \ fsrc2 %x2, %f4; \ fsrc2 %x3, %f6; \ fsrc2 %x4, %f8; \ fsrc2 %x5, %f10; \ fsrc2 %x6, %f12; \ fsrc2 %x7, %f14; #define FREG_LOAD_1(base, x0) \ EX_LD_FP(LOAD(ldd, base + 0x00, %x0), NG2_retl_o2_plus_g1) #define FREG_LOAD_2(base, x0, x1) \ EX_LD_FP(LOAD(ldd, base + 0x00, %x0), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x08, %x1), NG2_retl_o2_plus_g1); #define FREG_LOAD_3(base, x0, x1, x2) \ EX_LD_FP(LOAD(ldd, base + 0x00, %x0), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x08, %x1), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x10, %x2), NG2_retl_o2_plus_g1); #define FREG_LOAD_4(base, x0, x1, x2, x3) \ EX_LD_FP(LOAD(ldd, base + 0x00, %x0), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x08, %x1), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x10, %x2), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x18, %x3), NG2_retl_o2_plus_g1); #define FREG_LOAD_5(base, x0, x1, x2, x3, x4) \ EX_LD_FP(LOAD(ldd, base + 0x00, %x0), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x08, %x1), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x10, %x2), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x18, %x3), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x20, %x4), NG2_retl_o2_plus_g1); #define FREG_LOAD_6(base, x0, x1, x2, x3, x4, x5) \ EX_LD_FP(LOAD(ldd, base + 0x00, %x0), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x08, %x1), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x10, %x2), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x18, %x3), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x20, %x4), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x28, %x5), NG2_retl_o2_plus_g1); #define FREG_LOAD_7(base, x0, x1, x2, x3, x4, x5, x6) \ EX_LD_FP(LOAD(ldd, base + 0x00, %x0), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x08, %x1), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x10, %x2), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x18, %x3), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x20, %x4), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x28, %x5), NG2_retl_o2_plus_g1); \ EX_LD_FP(LOAD(ldd, base + 0x30, %x6), NG2_retl_o2_plus_g1); .register %g2,#scratch .register %g3,#scratch .text #ifndef EX_RETVAL #define EX_RETVAL(x) x __restore_fp: VISExitHalf __restore_asi: retl wr %g0, ASI_AIUS, %asi ENTRY(NG2_retl_o2) ba,pt %xcc, __restore_asi mov %o2, %o0 ENDPROC(NG2_retl_o2) ENTRY(NG2_retl_o2_plus_1) ba,pt %xcc, __restore_asi add %o2, 1, %o0 ENDPROC(NG2_retl_o2_plus_1) ENTRY(NG2_retl_o2_plus_4) ba,pt %xcc, __restore_asi add %o2, 4, %o0 ENDPROC(NG2_retl_o2_plus_4) ENTRY(NG2_retl_o2_plus_8) ba,pt %xcc, __restore_asi add %o2, 8, %o0 ENDPROC(NG2_retl_o2_plus_8) ENTRY(NG2_retl_o2_plus_o4_plus_1) add %o4, 1, %o4 ba,pt %xcc, __restore_asi add %o2, %o4, %o0 ENDPROC(NG2_retl_o2_plus_o4_plus_1) ENTRY(NG2_retl_o2_plus_o4_plus_8) add %o4, 8, %o4 ba,pt %xcc, __restore_asi add %o2, %o4, %o0 ENDPROC(NG2_retl_o2_plus_o4_plus_8) ENTRY(NG2_retl_o2_plus_o4_plus_16) add %o4, 16, %o4 ba,pt %xcc, __restore_asi add %o2, %o4, %o0 ENDPROC(NG2_retl_o2_plus_o4_plus_16) ENTRY(NG2_retl_o2_plus_g1_fp) ba,pt %xcc, __restore_fp add %o2, %g1, %o0 ENDPROC(NG2_retl_o2_plus_g1_fp) ENTRY(NG2_retl_o2_plus_g1_plus_64_fp) add %g1, 64, %g1 ba,pt %xcc, __restore_fp add %o2, %g1, %o0 ENDPROC(NG2_retl_o2_plus_g1_plus_64_fp) ENTRY(NG2_retl_o2_plus_g1_plus_1) add %g1, 1, %g1 ba,pt %xcc, __restore_asi add %o2, %g1, %o0 ENDPROC(NG2_retl_o2_plus_g1_plus_1) ENTRY(NG2_retl_o2_and_7_plus_o4) and %o2, 7, %o2 ba,pt %xcc, __restore_asi add %o2, %o4, %o0 ENDPROC(NG2_retl_o2_and_7_plus_o4) ENTRY(NG2_retl_o2_and_7_plus_o4_plus_8) and %o2, 7, %o2 add %o4, 8, %o4 ba,pt %xcc, __restore_asi add %o2, %o4, %o0 ENDPROC(NG2_retl_o2_and_7_plus_o4_plus_8) #endif .align 64 .globl FUNC_NAME .type FUNC_NAME,#function FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */ srlx %o2, 31, %g2 cmp %g2, 0 tne %xcc, 5 PREAMBLE mov %o0, %o3 cmp %o2, 0 be,pn %XCC, 85f or %o0, %o1, GLOBAL_SPARE cmp %o2, 16 blu,a,pn %XCC, 80f or GLOBAL_SPARE, %o2, GLOBAL_SPARE /* 2 blocks (128 bytes) is the minimum we can do the block * copy with. We need to ensure that we'll iterate at least * once in the block copy loop. At worst we'll need to align * the destination to a 64-byte boundary which can chew up * to (64 - 1) bytes from the length before we perform the * block copy loop. * * However, the cut-off point, performance wise, is around * 4 64-byte blocks. */ cmp %o2, (4 * 64) blu,pt %XCC, 75f andcc GLOBAL_SPARE, 0x7, %g0 /* %o0: dst * %o1: src * %o2: len (known to be >= 128) * * The block copy loops can use %o4, %g2, %g3 as * temporaries while copying the data. %o5 must * be preserved between VISEntryHalf and VISExitHalf */ LOAD(prefetch, %o1 + 0x000, #one_read) LOAD(prefetch, %o1 + 0x040, #one_read) LOAD(prefetch, %o1 + 0x080, #one_read) /* Align destination on 64-byte boundary. */ andcc %o0, (64 - 1), %o4 be,pt %XCC, 2f sub %o4, 64, %o4 sub %g0, %o4, %o4 ! bytes to align dst sub %o2, %o4, %o2 1: subcc %o4, 1, %o4 EX_LD(LOAD(ldub, %o1, %g1), NG2_retl_o2_plus_o4_plus_1) EX_ST(STORE(stb, %g1, %o0), NG2_retl_o2_plus_o4_plus_1) add %o1, 1, %o1 bne,pt %XCC, 1b add %o0, 1, %o0 2: /* Clobbers o5/g1/g2/g3/g7/icc/xcc. We must preserve * o5 from here until we hit VISExitHalf. */ VISEntryHalf membar #Sync alignaddr %o1, %g0, %g0 add %o1, (64 - 1), %o4 andn %o4, (64 - 1), %o4 andn %o2, (64 - 1), %g1 sub %o2, %g1, %o2 and %o1, (64 - 1), %g2 add %o1, %g1, %o1 sub %o0, %o4, %g3 brz,pt %g2, 190f cmp %g2, 32 blu,a 5f cmp %g2, 16 cmp %g2, 48 blu,a 4f cmp %g2, 40 cmp %g2, 56 blu 170f nop ba,a,pt %xcc, 180f nop 4: /* 32 <= low bits < 48 */ blu 150f nop ba,a,pt %xcc, 160f nop 5: /* 0 < low bits < 32 */ blu,a 6f cmp %g2, 8 cmp %g2, 24 blu 130f nop ba,a,pt %xcc, 140f nop 6: /* 0 < low bits < 16 */ bgeu 120f nop /* fall through for 0 < low bits < 8 */ 110: sub %o4, 64, %g2 EX_LD_FP(LOAD_BLK(%g2, %f0), NG2_retl_o2_plus_g1) 1: EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1) EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1) FREG_FROB(f0, f2, f4, f6, f8, f10, f12, f14, f16) EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1) FREG_MOVE_8(f16, f18, f20, f22, f24, f26, f28, f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 120: sub %o4, 56, %g2 FREG_LOAD_7(%g2, f0, f2, f4, f6, f8, f10, f12) 1: EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1) EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1) FREG_FROB(f0, f2, f4, f6, f8, f10, f12, f16, f18) EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1) FREG_MOVE_7(f18, f20, f22, f24, f26, f28, f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 130: sub %o4, 48, %g2 FREG_LOAD_6(%g2, f0, f2, f4, f6, f8, f10) 1: EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1) EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1) FREG_FROB(f0, f2, f4, f6, f8, f10, f16, f18, f20) EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1) FREG_MOVE_6(f20, f22, f24, f26, f28, f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 140: sub %o4, 40, %g2 FREG_LOAD_5(%g2, f0, f2, f4, f6, f8) 1: EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1) EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1) FREG_FROB(f0, f2, f4, f6, f8, f16, f18, f20, f22) EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1) FREG_MOVE_5(f22, f24, f26, f28, f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 150: sub %o4, 32, %g2 FREG_LOAD_4(%g2, f0, f2, f4, f6) 1: EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1) EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1) FREG_FROB(f0, f2, f4, f6, f16, f18, f20, f22, f24) EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1) FREG_MOVE_4(f24, f26, f28, f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 160: sub %o4, 24, %g2 FREG_LOAD_3(%g2, f0, f2, f4) 1: EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1) EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1) FREG_FROB(f0, f2, f4, f16, f18, f20, f22, f24, f26) EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1) FREG_MOVE_3(f26, f28, f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 170: sub %o4, 16, %g2 FREG_LOAD_2(%g2, f0, f2) 1: EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1) EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1) FREG_FROB(f0, f2, f16, f18, f20, f22, f24, f26, f28) EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1) FREG_MOVE_2(f28, f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 180: sub %o4, 8, %g2 FREG_LOAD_1(%g2, f0) 1: EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1) EX_LD_FP(LOAD_BLK(%o4, %f16), NG2_retl_o2_plus_g1) FREG_FROB(f0, f16, f18, f20, f22, f24, f26, f28, f30) EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1) FREG_MOVE_1(f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 190: 1: EX_ST_FP(STORE_INIT(%g0, %o4 + %g3), NG2_retl_o2_plus_g1) subcc %g1, 64, %g1 EX_LD_FP(LOAD_BLK(%o4, %f0), NG2_retl_o2_plus_g1_plus_64) EX_ST_FP(STORE_BLK(%f0, %o4 + %g3), NG2_retl_o2_plus_g1_plus_64) add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) 195: add %o4, %g3, %o0 membar #Sync VISExitHalf /* %o2 contains any final bytes still needed to be copied * over. If anything is left, we copy it one byte at a time. */ brz,pt %o2, 85f sub %o0, %o1, GLOBAL_SPARE ba,a,pt %XCC, 90f nop .align 64 75: /* 16 < len <= 64 */ bne,pn %XCC, 75f sub %o0, %o1, GLOBAL_SPARE 72: andn %o2, 0xf, %o4 and %o2, 0xf, %o2 1: subcc %o4, 0x10, %o4 EX_LD(LOAD(ldx, %o1, %o5), NG2_retl_o2_plus_o4_plus_16) add %o1, 0x08, %o1 EX_LD(LOAD(ldx, %o1, %g1), NG2_retl_o2_plus_o4_plus_16) sub %o1, 0x08, %o1 EX_ST(STORE(stx, %o5, %o1 + GLOBAL_SPARE), NG2_retl_o2_plus_o4_plus_16) add %o1, 0x8, %o1 EX_ST(STORE(stx, %g1, %o1 + GLOBAL_SPARE), NG2_retl_o2_plus_o4_plus_8) bgu,pt %XCC, 1b add %o1, 0x8, %o1 73: andcc %o2, 0x8, %g0 be,pt %XCC, 1f nop sub %o2, 0x8, %o2 EX_LD(LOAD(ldx, %o1, %o5), NG2_retl_o2_plus_8) EX_ST(STORE(stx, %o5, %o1 + GLOBAL_SPARE), NG2_retl_o2_plus_8) add %o1, 0x8, %o1 1: andcc %o2, 0x4, %g0 be,pt %XCC, 1f nop sub %o2, 0x4, %o2 EX_LD(LOAD(lduw, %o1, %o5), NG2_retl_o2_plus_4) EX_ST(STORE(stw, %o5, %o1 + GLOBAL_SPARE), NG2_retl_o2_plus_4) add %o1, 0x4, %o1 1: cmp %o2, 0 be,pt %XCC, 85f nop ba,pt %xcc, 90f nop 75: andcc %o0, 0x7, %g1 sub %g1, 0x8, %g1 be,pn %icc, 2f sub %g0, %g1, %g1 sub %o2, %g1, %o2 1: subcc %g1, 1, %g1 EX_LD(LOAD(ldub, %o1, %o5), NG2_retl_o2_plus_g1_plus_1) EX_ST(STORE(stb, %o5, %o1 + GLOBAL_SPARE), NG2_retl_o2_plus_g1_plus_1) bgu,pt %icc, 1b add %o1, 1, %o1 2: add %o1, GLOBAL_SPARE, %o0 andcc %o1, 0x7, %g1 bne,pt %icc, 8f sll %g1, 3, %g1 cmp %o2, 16 bgeu,pt %icc, 72b nop ba,a,pt %xcc, 73b 8: mov 64, GLOBAL_SPARE andn %o1, 0x7, %o1 EX_LD(LOAD(ldx, %o1, %g2), NG2_retl_o2) sub GLOBAL_SPARE, %g1, GLOBAL_SPARE andn %o2, 0x7, %o4 sllx %g2, %g1, %g2 1: add %o1, 0x8, %o1 EX_LD(LOAD(ldx, %o1, %g3), NG2_retl_o2_and_7_plus_o4) subcc %o4, 0x8, %o4 srlx %g3, GLOBAL_SPARE, %o5 or %o5, %g2, %o5 EX_ST(STORE(stx, %o5, %o0), NG2_retl_o2_and_7_plus_o4_plus_8) add %o0, 0x8, %o0 bgu,pt %icc, 1b sllx %g3, %g1, %g2 srl %g1, 3, %g1 andcc %o2, 0x7, %o2 be,pn %icc, 85f add %o1, %g1, %o1 ba,pt %xcc, 90f sub %o0, %o1, GLOBAL_SPARE .align 64 80: /* 0 < len <= 16 */ andcc GLOBAL_SPARE, 0x3, %g0 bne,pn %XCC, 90f sub %o0, %o1, GLOBAL_SPARE 1: subcc %o2, 4, %o2 EX_LD(LOAD(lduw, %o1, %g1), NG2_retl_o2_plus_4) EX_ST(STORE(stw, %g1, %o1 + GLOBAL_SPARE), NG2_retl_o2_plus_4) bgu,pt %XCC, 1b add %o1, 4, %o1 85: retl mov EX_RETVAL(%o3), %o0 .align 32 90: subcc %o2, 1, %o2 EX_LD(LOAD(ldub, %o1, %g1), NG2_retl_o2_plus_1) EX_ST(STORE(stb, %g1, %o1 + GLOBAL_SPARE), NG2_retl_o2_plus_1) bgu,pt %XCC, 90b add %o1, 1, %o1 retl mov EX_RETVAL(%o3), %o0 .size FUNC_NAME, .-FUNC_NAME