^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* GENbzero.S: Generic sparc64 memset/clear_user.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <asm/asi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #define EX_ST(x,y) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) 98: x,y; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) .section __ex_table,"a";\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) .align 4; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) .word 98b, __retl_o1_asi;\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) .text; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) .align 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) .align 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) .text
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) .globl GENmemset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) .type GENmemset, #function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) GENmemset: /* %o0=buf, %o1=pat, %o2=len */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) and %o1, 0xff, %o3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) mov %o2, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) sllx %o3, 8, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) or %g1, %o3, %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) sllx %o2, 16, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) or %g1, %o2, %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) sllx %o2, 32, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) ba,pt %xcc, 1f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) or %g1, %o2, %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) .globl GENbzero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) .type GENbzero, #function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) GENbzero:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) clr %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 1: brz,pn %o1, GENbzero_return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) mov %o0, %o3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /* %o5: saved %asi, restored at GENbzero_done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * %o4: store %asi to use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) rd %asi, %o5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) mov ASI_P, %o4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) wr %o4, 0x0, %asi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) GENbzero_from_clear_user:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) cmp %o1, 15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) bl,pn %icc, GENbzero_tiny
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) andcc %o0, 0x7, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) be,pt %xcc, 2f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) mov 8, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) sub %g2, %g1, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) sub %o1, %g1, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 1: EX_ST(stba %o2, [%o0 + 0x00] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) subcc %g1, 1, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) bne,pt %xcc, 1b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) add %o0, 1, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 2: cmp %o1, 128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) bl,pn %icc, GENbzero_medium
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) andcc %o0, (64 - 1), %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) be,pt %xcc, GENbzero_pre_loop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) mov 64, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) sub %g2, %g1, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) sub %o1, %g1, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 1: EX_ST(stxa %o2, [%o0 + 0x00] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) subcc %g1, 8, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) bne,pt %xcc, 1b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) add %o0, 8, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) GENbzero_pre_loop:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) andn %o1, (64 - 1), %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) sub %o1, %g1, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) GENbzero_loop:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) EX_ST(stxa %o2, [%o0 + 0x00] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) EX_ST(stxa %o2, [%o0 + 0x08] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) EX_ST(stxa %o2, [%o0 + 0x10] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) EX_ST(stxa %o2, [%o0 + 0x18] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) EX_ST(stxa %o2, [%o0 + 0x20] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) EX_ST(stxa %o2, [%o0 + 0x28] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) EX_ST(stxa %o2, [%o0 + 0x30] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) EX_ST(stxa %o2, [%o0 + 0x38] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) subcc %g1, 64, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) bne,pt %xcc, GENbzero_loop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) add %o0, 64, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) membar #Sync
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) wr %o4, 0x0, %asi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) brz,pn %o1, GENbzero_done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) GENbzero_medium:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) andncc %o1, 0x7, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) be,pn %xcc, 2f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) sub %o1, %g1, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) 1: EX_ST(stxa %o2, [%o0 + 0x00] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) subcc %g1, 8, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) bne,pt %xcc, 1b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) add %o0, 8, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) 2: brz,pt %o1, GENbzero_done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) GENbzero_tiny:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 1: EX_ST(stba %o2, [%o0 + 0x00] %asi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) subcc %o1, 1, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) bne,pt %icc, 1b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) add %o0, 1, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) /* fallthrough */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) GENbzero_done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) wr %o5, 0x0, %asi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) GENbzero_return:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) retl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) mov %o3, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) .size GENbzero, .-GENbzero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .size GENmemset, .-GENmemset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) .globl GENclear_user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .type GENclear_user, #function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) GENclear_user: /* %o0=buf, %o1=len */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) rd %asi, %o5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) brz,pn %o1, GENbzero_done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) clr %o3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) cmp %o5, ASI_AIUS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) bne,pn %icc, GENbzero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) clr %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) ba,pt %xcc, GENbzero_from_clear_user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) mov ASI_AIUS, %o4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) .size GENclear_user, .-GENclear_user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) #define BRANCH_ALWAYS 0x10680000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) #define NOP 0x01000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #define GEN_DO_PATCH(OLD, NEW) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) sethi %hi(NEW), %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) or %g1, %lo(NEW), %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) sethi %hi(OLD), %g2; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) or %g2, %lo(OLD), %g2; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) sub %g1, %g2, %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) sethi %hi(BRANCH_ALWAYS), %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) sll %g1, 11, %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) srl %g1, 11 + 2, %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) or %g3, %lo(BRANCH_ALWAYS), %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) or %g3, %g1, %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) stw %g3, [%g2]; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) sethi %hi(NOP), %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) or %g3, %lo(NOP), %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) stw %g3, [%g2 + 0x4]; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) flush %g2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) .globl generic_patch_bzero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) .type generic_patch_bzero,#function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) generic_patch_bzero:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) GEN_DO_PATCH(memset, GENmemset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) GEN_DO_PATCH(__bzero, GENbzero)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) GEN_DO_PATCH(__clear_user, GENclear_user)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) retl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) .size generic_patch_bzero,.-generic_patch_bzero
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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