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authorGiuseppe Scrivano <gscrivan@redhat.com>2022-05-12 03:45:32 +0200
committerGiuseppe Scrivano <gscrivan@redhat.com>2022-05-12 03:47:42 +0200
commit16e22dbbe30bdde27c51c656a31b41486cbc76e4 (patch)
tree619dfc9e81720df59f9c78e2bded6cd7707fd06f /vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s.in
parent1b8e9c2ca799063016e9fa765e124b9b8cec67a8 (diff)
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vendor: update c/storage and c/image
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Diffstat (limited to 'vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s.in')
-rw-r--r--vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s.in197
1 files changed, 0 insertions, 197 deletions
diff --git a/vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s.in b/vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s.in
deleted file mode 100644
index 6d477a2c1..000000000
--- a/vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s.in
+++ /dev/null
@@ -1,197 +0,0 @@
-// +build !appengine
-// +build gc
-// +build !noasm
-
-#include "textflag.h"
-#include "funcdata.h"
-#include "go_asm.h"
-
-
-#define bufoff 256 // see decompress.go, we're using [4][256]byte table
-
-//func decompress4x_main_loop_x86(pbr0, pbr1, pbr2, pbr3 *bitReaderShifted,
-// peekBits uint8, buf *byte, tbl *dEntrySingle) (int, bool)
-TEXT ·decompress4x_8b_loop_x86(SB), NOSPLIT, $8
-#define off R8
-#define buffer DI
-#define table SI
-
-#define br_bits_read R9
-#define br_value R10
-#define br_offset R11
-#define peek_bits R12
-#define exhausted DX
-
-#define br0 R13
-#define br1 R14
-#define br2 R15
-#define br3 BP
-
- MOVQ BP, 0(SP)
-
- XORQ exhausted, exhausted // exhausted = false
- XORQ off, off // off = 0
-
- MOVBQZX peekBits+32(FP), peek_bits
- MOVQ buf+40(FP), buffer
- MOVQ tbl+48(FP), table
-
- MOVQ pbr0+0(FP), br0
- MOVQ pbr1+8(FP), br1
- MOVQ pbr2+16(FP), br2
- MOVQ pbr3+24(FP), br3
-
-main_loop:
-{{ define "decode_2_values_x86" }}
- // const stream = {{ var "id" }}
- // br{{ var "id"}}.fillFast()
- MOVBQZX bitReaderShifted_bitsRead(br{{ var "id" }}), br_bits_read
- MOVQ bitReaderShifted_value(br{{ var "id" }}), br_value
- MOVQ bitReaderShifted_off(br{{ var "id" }}), br_offset
-
- // if b.bitsRead >= 32 {
- CMPQ br_bits_read, $32
- JB skip_fill{{ var "id" }}
-
- SUBQ $32, br_bits_read // b.bitsRead -= 32
- SUBQ $4, br_offset // b.off -= 4
-
- // v := b.in[b.off-4 : b.off]
- // v = v[:4]
- // low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
- MOVQ bitReaderShifted_in(br{{ var "id" }}), AX
- MOVL 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4])
-
- // b.value |= uint64(low) << (b.bitsRead & 63)
- MOVQ br_bits_read, CX
- SHLQ CL, AX
- ORQ AX, br_value
-
- // exhausted = exhausted || (br{{ var "id"}}.off < 4)
- CMPQ br_offset, $4
- SETLT DL
- ORB DL, DH
- // }
-skip_fill{{ var "id" }}:
-
- // val0 := br{{ var "id"}}.peekTopBits(peekBits)
- MOVQ br_value, AX
- MOVQ peek_bits, CX
- SHRQ CL, AX // AX = (value >> peek_bits) & mask
-
- // v0 := table[val0&mask]
- MOVW 0(table)(AX*2), AX // AX - v0
-
- // br{{ var "id"}}.advance(uint8(v0.entry))
- MOVB AH, BL // BL = uint8(v0.entry >> 8)
- MOVBQZX AL, CX
- SHLQ CL, br_value // value <<= n
- ADDQ CX, br_bits_read // bits_read += n
-
- // val1 := br{{ var "id"}}.peekTopBits(peekBits)
- MOVQ peek_bits, CX
- MOVQ br_value, AX
- SHRQ CL, AX // AX = (value >> peek_bits) & mask
-
- // v1 := table[val1&mask]
- MOVW 0(table)(AX*2), AX // AX - v1
-
- // br{{ var "id"}}.advance(uint8(v1.entry))
- MOVB AH, BH // BH = uint8(v1.entry >> 8)
- MOVBQZX AL, CX
- SHLQ CX, br_value // value <<= n
- ADDQ CX, br_bits_read // bits_read += n
-
-
- // these two writes get coalesced
- // buf[stream][off] = uint8(v0.entry >> 8)
- // buf[stream][off+1] = uint8(v1.entry >> 8)
- MOVW BX, {{ var "bufofs" }}(buffer)(off*1)
-
- // SECOND PART:
- // val2 := br{{ var "id"}}.peekTopBits(peekBits)
- MOVQ br_value, AX
- MOVQ peek_bits, CX
- SHRQ CL, AX // AX = (value >> peek_bits) & mask
-
- // v2 := table[val0&mask]
- MOVW 0(table)(AX*2), AX // AX - v0
-
- // br{{ var "id"}}.advance(uint8(v0.entry))
- MOVB AH, BL // BL = uint8(v0.entry >> 8)
- MOVBQZX AL, CX
- SHLQ CL, br_value // value <<= n
- ADDQ CX, br_bits_read // bits_read += n
-
- // val3 := br{{ var "id"}}.peekTopBits(peekBits)
- MOVQ peek_bits, CX
- MOVQ br_value, AX
- SHRQ CL, AX // AX = (value >> peek_bits) & mask
-
- // v3 := table[val1&mask]
- MOVW 0(table)(AX*2), AX // AX - v1
-
- // br{{ var "id"}}.advance(uint8(v1.entry))
- MOVB AH, BH // BH = uint8(v1.entry >> 8)
- MOVBQZX AL, CX
- SHLQ CX, br_value // value <<= n
- ADDQ CX, br_bits_read // bits_read += n
-
-
- // these two writes get coalesced
- // buf[stream][off+2] = uint8(v2.entry >> 8)
- // buf[stream][off+3] = uint8(v3.entry >> 8)
- MOVW BX, {{ var "bufofs" }}+2(buffer)(off*1)
-
- // update the bitrader reader structure
- MOVB br_bits_read, bitReaderShifted_bitsRead(br{{ var "id" }})
- MOVQ br_value, bitReaderShifted_value(br{{ var "id" }})
- MOVQ br_offset, bitReaderShifted_off(br{{ var "id" }})
-{{ end }}
-
- {{ set "id" "0" }}
- {{ set "ofs" "0" }}
- {{ set "bufofs" "0" }} {{/* id * bufoff */}}
- {{ template "decode_2_values_x86" . }}
-
- {{ set "id" "1" }}
- {{ set "ofs" "8" }}
- {{ set "bufofs" "256" }}
- {{ template "decode_2_values_x86" . }}
-
- {{ set "id" "2" }}
- {{ set "ofs" "16" }}
- {{ set "bufofs" "512" }}
- {{ template "decode_2_values_x86" . }}
-
- {{ set "id" "3" }}
- {{ set "ofs" "24" }}
- {{ set "bufofs" "768" }}
- {{ template "decode_2_values_x86" . }}
-
- ADDQ $4, off // off += 2
-
- TESTB DH, DH // any br[i].ofs < 4?
- JNZ end
-
- CMPQ off, $bufoff
- JL main_loop
-end:
- MOVQ 0(SP), BP
-
- MOVB off, ret+56(FP)
- RET
-#undef off
-#undef buffer
-#undef table
-
-#undef br_bits_read
-#undef br_value
-#undef br_offset
-#undef peek_bits
-#undef exhausted
-
-#undef br0
-#undef br1
-#undef br2
-#undef br3