1 files changed, 0 insertions, 139 deletions
diff --git a/zap/source/amd64/mem/utf8enc.S b/zap/source/amd64/mem/utf8enc.S
deleted file mode 100644
index 357bdaa..0000000
--- a/zap/source/amd64/mem/utf8enc.S
+++ /dev/null
@@ -1,139 +0,0 @@
-# Copyright 2022 Gabriel Jensen.
-# This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
-# If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
-
-.globl zap_utf8enc
-
-zap_utf8enc:
- # rdi: Current input codepoint.
- # rsi: Current output octet.
- # rax: Current codepoint.
- # rdx: Temporary.
-
- # Iterate over the input:
-.loop:
-
- movl (%rdi),%eax
-
- cmpl $0xFFFF,%eax
- jg .oct4
-
- cmpl $0x7FF,%eax
- jg .oct3
-
- cmpl $0x7F,%eax
- jg .oct2 # Otherwise, only one octet is needed.
-
- # One octet:
-.oct1:
-
- # Octet #0:
- movb %al,(%rsi) # No conversion needed:
-
- incq %rsi
-
- # Test if we have reached the null-terminator:
- testb %al,%al
- jz .done
-
- jmp .cnt
-
- # Two octets:
-.oct2:
-
- /* Octet #0: */
- movl %eax,%edx
- shrl $0x6,%edx
- orb $0xC0,%dl
- movb %dl,(%rsi)
-
- incq %rsi
-
- # Octet #1:
- movl %eax,%edx
- andb $0x3F,%dl
- orb $0x80,%dl
- movb %dl,(%rsi)
-
- incq %rsi
-
- jmp .cnt
-
- # Three octets:
-.oct3:
-
- # Octet #0:
- movl %eax,%edx
- shrl $0xC,%edx
- orb $0xE0,%dl
- movb %dl,(%rsi)
-
- incq %rsi
-
- # Octet #1:
- movl %eax,%edx
- shrl $0x6,%edx
- andb $0x3F,%dl
- orb $0x80,%dl
- movb %dl,(%rsi)
-
- incq %rsi
-
- # Octet #2:
- movl %eax,%edx
- andb $0x3F,%dl
- orb $0x80,%dl
- movb %dl,(%rsi)
-
- incq %rsi
-
- jmp .cnt
-
- # Four octets:
-.oct4:
-
- # Octet #0:
- movl %eax,%edx
- shrl $0x12,%edx
- orb $0xF0,%dl
- movb %dl,(%rsi)
-
- incq %rsi
-
- # Octet #1:
- movl %eax,%edx
- shrl $0xC,%edx
- andb $0x3F,%dl
- orb $0x80,%dl
- movb %dl,(%rsi)
-
- incq %rsi
-
- # Octet #2:
- movl %eax,%edx
- shrl $0x6,%edx
- andb $0x3F,%dl
- orb $0x80,%dl
- movb %dl,(%rsi)
-
- incq %rsi
-
- # Octet #3:
- movl %eax,%edx
- andb $0x3F,%dl
- orb $0x80,%dl
- movb %dl,(%rsi)
-
- incq %rsi
-
- # Continue to the next codepoint:
-.cnt:
-
- addq $0x4,%rdi
- jmp .loop
-
- # Done:
-.done:
-
- ret
-
-\ No newline at end of file