Update to c/image v4.0.1

Update to use the correct c/image/v4 import path, work originally from
https://github.com/containers/skopeo/pull/733 by Valentin Rothberg <rothberg@redhat.com>.

Signed-off-by: Miloslav Trmač <mitr@redhat.com>
This commit is contained in:
Valentin Rothberg
2019-10-02 10:24:06 +02:00
committed by Miloslav Trmač
parent 881edbf122
commit 7922028d7c
323 changed files with 6754 additions and 2326 deletions

View File

@@ -184,9 +184,7 @@ tagLit60Plus:
// checks. In the asm version, we code it once instead of once per switch case.
ADDQ CX, SI
SUBQ $58, SI
MOVQ SI, BX
SUBQ R11, BX
CMPQ BX, R12
CMPQ SI, R13
JA errCorrupt
// case x == 60:
@@ -232,9 +230,7 @@ tagCopy4:
ADDQ $5, SI
// if uint(s) > uint(len(src)) { etc }
MOVQ SI, BX
SUBQ R11, BX
CMPQ BX, R12
CMPQ SI, R13
JA errCorrupt
// length = 1 + int(src[s-5])>>2
@@ -251,9 +247,7 @@ tagCopy2:
ADDQ $3, SI
// if uint(s) > uint(len(src)) { etc }
MOVQ SI, BX
SUBQ R11, BX
CMPQ BX, R12
CMPQ SI, R13
JA errCorrupt
// length = 1 + int(src[s-3])>>2
@@ -277,9 +271,7 @@ tagCopy:
ADDQ $2, SI
// if uint(s) > uint(len(src)) { etc }
MOVQ SI, BX
SUBQ R11, BX
CMPQ BX, R12
CMPQ SI, R13
JA errCorrupt
// offset = int(uint32(src[s-2])&0xe0<<3 | uint32(src[s-1]))

View File

@@ -85,14 +85,28 @@ func decode(dst, src []byte) int {
if offset <= 0 || d < offset || length > len(dst)-d {
return decodeErrCodeCorrupt
}
// Copy from an earlier sub-slice of dst to a later sub-slice. Unlike
// the built-in copy function, this byte-by-byte copy always runs
// Copy from an earlier sub-slice of dst to a later sub-slice.
// If no overlap, use the built-in copy:
if offset > length {
copy(dst[d:d+length], dst[d-offset:])
d += length
continue
}
// Unlike the built-in copy function, this byte-by-byte copy always runs
// forwards, even if the slices overlap. Conceptually, this is:
//
// d += forwardCopy(dst[d:d+length], dst[d-offset:])
for end := d + length; d != end; d++ {
dst[d] = dst[d-offset]
//
// We align the slices into a and b and show the compiler they are the same size.
// This allows the loop to run without bounds checks.
a := dst[d : d+length]
b := dst[d-offset:]
b = b[:len(a)]
for i := range a {
a[i] = b[i]
}
d += length
}
if d != len(dst) {
return decodeErrCodeCorrupt