diff options
Diffstat (limited to 'compat/zlib/contrib/masmx64/inffasx64.asm')
-rw-r--r-- | compat/zlib/contrib/masmx64/inffasx64.asm | 788 |
1 files changed, 396 insertions, 392 deletions
diff --git a/compat/zlib/contrib/masmx64/inffasx64.asm b/compat/zlib/contrib/masmx64/inffasx64.asm index b5d93a2..41ec823 100644 --- a/compat/zlib/contrib/masmx64/inffasx64.asm +++ b/compat/zlib/contrib/masmx64/inffasx64.asm @@ -1,392 +1,396 @@ -; inffasx64.asm is a hand tuned assembler version of inffast.c - fast decoding
-; version for AMD64 on Windows using Microsoft C compiler
-;
-; inffasx64.asm is automatically convert from AMD64 portion of inffas86.c
-; inffasx64.asm is called by inffas8664.c, which contain more info.
-
-
-; to compile this file, I use option
-; ml64.exe /Flinffasx64 /c /Zi inffasx64.asm
-; with Microsoft Macro Assembler (x64) for AMD64
-;
-; ml64.exe is given with Visual Studio 2005, Windows 2003 server DDK
-;
-; (you can get Windows 2003 server DDK with ml64 and cl.exe for AMD64 from
-; http://www.microsoft.com/whdc/devtools/ddk/default.mspx for low price)
-;
-
-.code
-inffas8664fnc PROC
-
-; see http://weblogs.asp.net/oldnewthing/archive/2004/01/14/58579.aspx and
-; http://msdn.microsoft.com/library/en-us/kmarch/hh/kmarch/64bitAMD_8e951dd2-ee77-4728-8702-55ce4b5dd24a.xml.asp
-;
-; All registers must be preserved across the call, except for
-; rax, rcx, rdx, r8, r-9, r10, and r11, which are scratch.
-
-
- mov [rsp-8],rsi
- mov [rsp-16],rdi
- mov [rsp-24],r12
- mov [rsp-32],r13
- mov [rsp-40],r14
- mov [rsp-48],r15
- mov [rsp-56],rbx
-
- mov rax,rcx
-
- mov [rax+8], rbp ; /* save regs rbp and rsp */
- mov [rax], rsp
-
- mov rsp, rax ; /* make rsp point to &ar */
-
- mov rsi, [rsp+16] ; /* rsi = in */
- mov rdi, [rsp+32] ; /* rdi = out */
- mov r9, [rsp+24] ; /* r9 = last */
- mov r10, [rsp+48] ; /* r10 = end */
- mov rbp, [rsp+64] ; /* rbp = lcode */
- mov r11, [rsp+72] ; /* r11 = dcode */
- mov rdx, [rsp+80] ; /* rdx = hold */
- mov ebx, [rsp+88] ; /* ebx = bits */
- mov r12d, [rsp+100] ; /* r12d = lmask */
- mov r13d, [rsp+104] ; /* r13d = dmask */
- ; /* r14d = len */
- ; /* r15d = dist */
-
-
- cld
- cmp r10, rdi
- je L_one_time ; /* if only one decode left */
- cmp r9, rsi
-
- jne L_do_loop
-
-
-L_one_time:
- mov r8, r12 ; /* r8 = lmask */
- cmp bl, 32
- ja L_get_length_code_one_time
-
- lodsd ; /* eax = *(uint *)in++ */
- mov cl, bl ; /* cl = bits, needs it for shifting */
- add bl, 32 ; /* bits += 32 */
- shl rax, cl
- or rdx, rax ; /* hold |= *((uint *)in)++ << bits */
- jmp L_get_length_code_one_time
-
-ALIGN 4
-L_while_test:
- cmp r10, rdi
- jbe L_break_loop
- cmp r9, rsi
- jbe L_break_loop
-
-L_do_loop:
- mov r8, r12 ; /* r8 = lmask */
- cmp bl, 32
- ja L_get_length_code ; /* if (32 < bits) */
-
- lodsd ; /* eax = *(uint *)in++ */
- mov cl, bl ; /* cl = bits, needs it for shifting */
- add bl, 32 ; /* bits += 32 */
- shl rax, cl
- or rdx, rax ; /* hold |= *((uint *)in)++ << bits */
-
-L_get_length_code:
- and r8, rdx ; /* r8 &= hold */
- mov eax, [rbp+r8*4] ; /* eax = lcode[hold & lmask] */
-
- mov cl, ah ; /* cl = this.bits */
- sub bl, ah ; /* bits -= this.bits */
- shr rdx, cl ; /* hold >>= this.bits */
-
- test al, al
- jnz L_test_for_length_base ; /* if (op != 0) 45.7% */
-
- mov r8, r12 ; /* r8 = lmask */
- shr eax, 16 ; /* output this.val char */
- stosb
-
-L_get_length_code_one_time:
- and r8, rdx ; /* r8 &= hold */
- mov eax, [rbp+r8*4] ; /* eax = lcode[hold & lmask] */
-
-L_dolen:
- mov cl, ah ; /* cl = this.bits */
- sub bl, ah ; /* bits -= this.bits */
- shr rdx, cl ; /* hold >>= this.bits */
-
- test al, al
- jnz L_test_for_length_base ; /* if (op != 0) 45.7% */
-
- shr eax, 16 ; /* output this.val char */
- stosb
- jmp L_while_test
-
-ALIGN 4
-L_test_for_length_base:
- mov r14d, eax ; /* len = this */
- shr r14d, 16 ; /* len = this.val */
- mov cl, al
-
- test al, 16
- jz L_test_for_second_level_length ; /* if ((op & 16) == 0) 8% */
- and cl, 15 ; /* op &= 15 */
- jz L_decode_distance ; /* if (!op) */
-
-L_add_bits_to_len:
- sub bl, cl
- xor eax, eax
- inc eax
- shl eax, cl
- dec eax
- and eax, edx ; /* eax &= hold */
- shr rdx, cl
- add r14d, eax ; /* len += hold & mask[op] */
-
-L_decode_distance:
- mov r8, r13 ; /* r8 = dmask */
- cmp bl, 32
- ja L_get_distance_code ; /* if (32 < bits) */
-
- lodsd ; /* eax = *(uint *)in++ */
- mov cl, bl ; /* cl = bits, needs it for shifting */
- add bl, 32 ; /* bits += 32 */
- shl rax, cl
- or rdx, rax ; /* hold |= *((uint *)in)++ << bits */
-
-L_get_distance_code:
- and r8, rdx ; /* r8 &= hold */
- mov eax, [r11+r8*4] ; /* eax = dcode[hold & dmask] */
-
-L_dodist:
- mov r15d, eax ; /* dist = this */
- shr r15d, 16 ; /* dist = this.val */
- mov cl, ah
- sub bl, ah ; /* bits -= this.bits */
- shr rdx, cl ; /* hold >>= this.bits */
- mov cl, al ; /* cl = this.op */
-
- test al, 16 ; /* if ((op & 16) == 0) */
- jz L_test_for_second_level_dist
- and cl, 15 ; /* op &= 15 */
- jz L_check_dist_one
-
-L_add_bits_to_dist:
- sub bl, cl
- xor eax, eax
- inc eax
- shl eax, cl
- dec eax ; /* (1 << op) - 1 */
- and eax, edx ; /* eax &= hold */
- shr rdx, cl
- add r15d, eax ; /* dist += hold & ((1 << op) - 1) */
-
-L_check_window:
- mov r8, rsi ; /* save in so from can use it's reg */
- mov rax, rdi
- sub rax, [rsp+40] ; /* nbytes = out - beg */
-
- cmp eax, r15d
- jb L_clip_window ; /* if (dist > nbytes) 4.2% */
-
- mov ecx, r14d ; /* ecx = len */
- mov rsi, rdi
- sub rsi, r15 ; /* from = out - dist */
-
- sar ecx, 1
- jnc L_copy_two ; /* if len % 2 == 0 */
-
- rep movsw
- mov al, [rsi]
- mov [rdi], al
- inc rdi
-
- mov rsi, r8 ; /* move in back to %rsi, toss from */
- jmp L_while_test
-
-L_copy_two:
- rep movsw
- mov rsi, r8 ; /* move in back to %rsi, toss from */
- jmp L_while_test
-
-ALIGN 4
-L_check_dist_one:
- cmp r15d, 1 ; /* if dist 1, is a memset */
- jne L_check_window
- cmp [rsp+40], rdi ; /* if out == beg, outside window */
- je L_check_window
-
- mov ecx, r14d ; /* ecx = len */
- mov al, [rdi-1]
- mov ah, al
-
- sar ecx, 1
- jnc L_set_two
- mov [rdi], al
- inc rdi
-
-L_set_two:
- rep stosw
- jmp L_while_test
-
-ALIGN 4
-L_test_for_second_level_length:
- test al, 64
- jnz L_test_for_end_of_block ; /* if ((op & 64) != 0) */
-
- xor eax, eax
- inc eax
- shl eax, cl
- dec eax
- and eax, edx ; /* eax &= hold */
- add eax, r14d ; /* eax += len */
- mov eax, [rbp+rax*4] ; /* eax = lcode[val+(hold&mask[op])]*/
- jmp L_dolen
-
-ALIGN 4
-L_test_for_second_level_dist:
- test al, 64
- jnz L_invalid_distance_code ; /* if ((op & 64) != 0) */
-
- xor eax, eax
- inc eax
- shl eax, cl
- dec eax
- and eax, edx ; /* eax &= hold */
- add eax, r15d ; /* eax += dist */
- mov eax, [r11+rax*4] ; /* eax = dcode[val+(hold&mask[op])]*/
- jmp L_dodist
-
-ALIGN 4
-L_clip_window:
- mov ecx, eax ; /* ecx = nbytes */
- mov eax, [rsp+92] ; /* eax = wsize, prepare for dist cmp */
- neg ecx ; /* nbytes = -nbytes */
-
- cmp eax, r15d
- jb L_invalid_distance_too_far ; /* if (dist > wsize) */
-
- add ecx, r15d ; /* nbytes = dist - nbytes */
- cmp dword ptr [rsp+96], 0
- jne L_wrap_around_window ; /* if (write != 0) */
-
- mov rsi, [rsp+56] ; /* from = window */
- sub eax, ecx ; /* eax -= nbytes */
- add rsi, rax ; /* from += wsize - nbytes */
-
- mov eax, r14d ; /* eax = len */
- cmp r14d, ecx
- jbe L_do_copy ; /* if (nbytes >= len) */
-
- sub eax, ecx ; /* eax -= nbytes */
- rep movsb
- mov rsi, rdi
- sub rsi, r15 ; /* from = &out[ -dist ] */
- jmp L_do_copy
-
-ALIGN 4
-L_wrap_around_window:
- mov eax, [rsp+96] ; /* eax = write */
- cmp ecx, eax
- jbe L_contiguous_in_window ; /* if (write >= nbytes) */
-
- mov esi, [rsp+92] ; /* from = wsize */
- add rsi, [rsp+56] ; /* from += window */
- add rsi, rax ; /* from += write */
- sub rsi, rcx ; /* from -= nbytes */
- sub ecx, eax ; /* nbytes -= write */
-
- mov eax, r14d ; /* eax = len */
- cmp eax, ecx
- jbe L_do_copy ; /* if (nbytes >= len) */
-
- sub eax, ecx ; /* len -= nbytes */
- rep movsb
- mov rsi, [rsp+56] ; /* from = window */
- mov ecx, [rsp+96] ; /* nbytes = write */
- cmp eax, ecx
- jbe L_do_copy ; /* if (nbytes >= len) */
-
- sub eax, ecx ; /* len -= nbytes */
- rep movsb
- mov rsi, rdi
- sub rsi, r15 ; /* from = out - dist */
- jmp L_do_copy
-
-ALIGN 4
-L_contiguous_in_window:
- mov rsi, [rsp+56] ; /* rsi = window */
- add rsi, rax
- sub rsi, rcx ; /* from += write - nbytes */
-
- mov eax, r14d ; /* eax = len */
- cmp eax, ecx
- jbe L_do_copy ; /* if (nbytes >= len) */
-
- sub eax, ecx ; /* len -= nbytes */
- rep movsb
- mov rsi, rdi
- sub rsi, r15 ; /* from = out - dist */
- jmp L_do_copy ; /* if (nbytes >= len) */
-
-ALIGN 4
-L_do_copy:
- mov ecx, eax ; /* ecx = len */
- rep movsb
-
- mov rsi, r8 ; /* move in back to %esi, toss from */
- jmp L_while_test
-
-L_test_for_end_of_block:
- test al, 32
- jz L_invalid_literal_length_code
- mov dword ptr [rsp+116], 1
- jmp L_break_loop_with_status
-
-L_invalid_literal_length_code:
- mov dword ptr [rsp+116], 2
- jmp L_break_loop_with_status
-
-L_invalid_distance_code:
- mov dword ptr [rsp+116], 3
- jmp L_break_loop_with_status
-
-L_invalid_distance_too_far:
- mov dword ptr [rsp+116], 4
- jmp L_break_loop_with_status
-
-L_break_loop:
- mov dword ptr [rsp+116], 0
-
-L_break_loop_with_status:
-; /* put in, out, bits, and hold back into ar and pop esp */
- mov [rsp+16], rsi ; /* in */
- mov [rsp+32], rdi ; /* out */
- mov [rsp+88], ebx ; /* bits */
- mov [rsp+80], rdx ; /* hold */
-
- mov rax, [rsp] ; /* restore rbp and rsp */
- mov rbp, [rsp+8]
- mov rsp, rax
-
-
-
- mov rsi,[rsp-8]
- mov rdi,[rsp-16]
- mov r12,[rsp-24]
- mov r13,[rsp-32]
- mov r14,[rsp-40]
- mov r15,[rsp-48]
- mov rbx,[rsp-56]
-
- ret 0
-; :
-; : "m" (ar)
-; : "memory", "%rax", "%rbx", "%rcx", "%rdx", "%rsi", "%rdi",
-; "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15"
-; );
-
-inffas8664fnc ENDP
-;_TEXT ENDS
-END
+; inffasx64.asm is a hand tuned assembler version of inffast.c - fast decoding +; version for AMD64 on Windows using Microsoft C compiler +; +; inffasx64.asm is automatically convert from AMD64 portion of inffas86.c +; inffasx64.asm is called by inffas8664.c, which contain more info. + + +; to compile this file, I use option +; ml64.exe /Flinffasx64 /c /Zi inffasx64.asm +; with Microsoft Macro Assembler (x64) for AMD64 +; + +; This file compile with Microsoft Macro Assembler (x64) for AMD64 +; +; ml64.exe is given with Visual Studio 2005/2008/2010 and Windows WDK +; +; (you can get Windows WDK with ml64 for AMD64 from +; http://www.microsoft.com/whdc/Devtools/wdk/default.mspx for low price) +; + + +.code +inffas8664fnc PROC + +; see http://weblogs.asp.net/oldnewthing/archive/2004/01/14/58579.aspx and +; http://msdn.microsoft.com/library/en-us/kmarch/hh/kmarch/64bitAMD_8e951dd2-ee77-4728-8702-55ce4b5dd24a.xml.asp +; +; All registers must be preserved across the call, except for +; rax, rcx, rdx, r8, r-9, r10, and r11, which are scratch. + + + mov [rsp-8],rsi + mov [rsp-16],rdi + mov [rsp-24],r12 + mov [rsp-32],r13 + mov [rsp-40],r14 + mov [rsp-48],r15 + mov [rsp-56],rbx + + mov rax,rcx + + mov [rax+8], rbp ; /* save regs rbp and rsp */ + mov [rax], rsp + + mov rsp, rax ; /* make rsp point to &ar */ + + mov rsi, [rsp+16] ; /* rsi = in */ + mov rdi, [rsp+32] ; /* rdi = out */ + mov r9, [rsp+24] ; /* r9 = last */ + mov r10, [rsp+48] ; /* r10 = end */ + mov rbp, [rsp+64] ; /* rbp = lcode */ + mov r11, [rsp+72] ; /* r11 = dcode */ + mov rdx, [rsp+80] ; /* rdx = hold */ + mov ebx, [rsp+88] ; /* ebx = bits */ + mov r12d, [rsp+100] ; /* r12d = lmask */ + mov r13d, [rsp+104] ; /* r13d = dmask */ + ; /* r14d = len */ + ; /* r15d = dist */ + + + cld + cmp r10, rdi + je L_one_time ; /* if only one decode left */ + cmp r9, rsi + + jne L_do_loop + + +L_one_time: + mov r8, r12 ; /* r8 = lmask */ + cmp bl, 32 + ja L_get_length_code_one_time + + lodsd ; /* eax = *(uint *)in++ */ + mov cl, bl ; /* cl = bits, needs it for shifting */ + add bl, 32 ; /* bits += 32 */ + shl rax, cl + or rdx, rax ; /* hold |= *((uint *)in)++ << bits */ + jmp L_get_length_code_one_time + +ALIGN 4 +L_while_test: + cmp r10, rdi + jbe L_break_loop + cmp r9, rsi + jbe L_break_loop + +L_do_loop: + mov r8, r12 ; /* r8 = lmask */ + cmp bl, 32 + ja L_get_length_code ; /* if (32 < bits) */ + + lodsd ; /* eax = *(uint *)in++ */ + mov cl, bl ; /* cl = bits, needs it for shifting */ + add bl, 32 ; /* bits += 32 */ + shl rax, cl + or rdx, rax ; /* hold |= *((uint *)in)++ << bits */ + +L_get_length_code: + and r8, rdx ; /* r8 &= hold */ + mov eax, [rbp+r8*4] ; /* eax = lcode[hold & lmask] */ + + mov cl, ah ; /* cl = this.bits */ + sub bl, ah ; /* bits -= this.bits */ + shr rdx, cl ; /* hold >>= this.bits */ + + test al, al + jnz L_test_for_length_base ; /* if (op != 0) 45.7% */ + + mov r8, r12 ; /* r8 = lmask */ + shr eax, 16 ; /* output this.val char */ + stosb + +L_get_length_code_one_time: + and r8, rdx ; /* r8 &= hold */ + mov eax, [rbp+r8*4] ; /* eax = lcode[hold & lmask] */ + +L_dolen: + mov cl, ah ; /* cl = this.bits */ + sub bl, ah ; /* bits -= this.bits */ + shr rdx, cl ; /* hold >>= this.bits */ + + test al, al + jnz L_test_for_length_base ; /* if (op != 0) 45.7% */ + + shr eax, 16 ; /* output this.val char */ + stosb + jmp L_while_test + +ALIGN 4 +L_test_for_length_base: + mov r14d, eax ; /* len = this */ + shr r14d, 16 ; /* len = this.val */ + mov cl, al + + test al, 16 + jz L_test_for_second_level_length ; /* if ((op & 16) == 0) 8% */ + and cl, 15 ; /* op &= 15 */ + jz L_decode_distance ; /* if (!op) */ + +L_add_bits_to_len: + sub bl, cl + xor eax, eax + inc eax + shl eax, cl + dec eax + and eax, edx ; /* eax &= hold */ + shr rdx, cl + add r14d, eax ; /* len += hold & mask[op] */ + +L_decode_distance: + mov r8, r13 ; /* r8 = dmask */ + cmp bl, 32 + ja L_get_distance_code ; /* if (32 < bits) */ + + lodsd ; /* eax = *(uint *)in++ */ + mov cl, bl ; /* cl = bits, needs it for shifting */ + add bl, 32 ; /* bits += 32 */ + shl rax, cl + or rdx, rax ; /* hold |= *((uint *)in)++ << bits */ + +L_get_distance_code: + and r8, rdx ; /* r8 &= hold */ + mov eax, [r11+r8*4] ; /* eax = dcode[hold & dmask] */ + +L_dodist: + mov r15d, eax ; /* dist = this */ + shr r15d, 16 ; /* dist = this.val */ + mov cl, ah + sub bl, ah ; /* bits -= this.bits */ + shr rdx, cl ; /* hold >>= this.bits */ + mov cl, al ; /* cl = this.op */ + + test al, 16 ; /* if ((op & 16) == 0) */ + jz L_test_for_second_level_dist + and cl, 15 ; /* op &= 15 */ + jz L_check_dist_one + +L_add_bits_to_dist: + sub bl, cl + xor eax, eax + inc eax + shl eax, cl + dec eax ; /* (1 << op) - 1 */ + and eax, edx ; /* eax &= hold */ + shr rdx, cl + add r15d, eax ; /* dist += hold & ((1 << op) - 1) */ + +L_check_window: + mov r8, rsi ; /* save in so from can use it's reg */ + mov rax, rdi + sub rax, [rsp+40] ; /* nbytes = out - beg */ + + cmp eax, r15d + jb L_clip_window ; /* if (dist > nbytes) 4.2% */ + + mov ecx, r14d ; /* ecx = len */ + mov rsi, rdi + sub rsi, r15 ; /* from = out - dist */ + + sar ecx, 1 + jnc L_copy_two ; /* if len % 2 == 0 */ + + rep movsw + mov al, [rsi] + mov [rdi], al + inc rdi + + mov rsi, r8 ; /* move in back to %rsi, toss from */ + jmp L_while_test + +L_copy_two: + rep movsw + mov rsi, r8 ; /* move in back to %rsi, toss from */ + jmp L_while_test + +ALIGN 4 +L_check_dist_one: + cmp r15d, 1 ; /* if dist 1, is a memset */ + jne L_check_window + cmp [rsp+40], rdi ; /* if out == beg, outside window */ + je L_check_window + + mov ecx, r14d ; /* ecx = len */ + mov al, [rdi-1] + mov ah, al + + sar ecx, 1 + jnc L_set_two + mov [rdi], al + inc rdi + +L_set_two: + rep stosw + jmp L_while_test + +ALIGN 4 +L_test_for_second_level_length: + test al, 64 + jnz L_test_for_end_of_block ; /* if ((op & 64) != 0) */ + + xor eax, eax + inc eax + shl eax, cl + dec eax + and eax, edx ; /* eax &= hold */ + add eax, r14d ; /* eax += len */ + mov eax, [rbp+rax*4] ; /* eax = lcode[val+(hold&mask[op])]*/ + jmp L_dolen + +ALIGN 4 +L_test_for_second_level_dist: + test al, 64 + jnz L_invalid_distance_code ; /* if ((op & 64) != 0) */ + + xor eax, eax + inc eax + shl eax, cl + dec eax + and eax, edx ; /* eax &= hold */ + add eax, r15d ; /* eax += dist */ + mov eax, [r11+rax*4] ; /* eax = dcode[val+(hold&mask[op])]*/ + jmp L_dodist + +ALIGN 4 +L_clip_window: + mov ecx, eax ; /* ecx = nbytes */ + mov eax, [rsp+92] ; /* eax = wsize, prepare for dist cmp */ + neg ecx ; /* nbytes = -nbytes */ + + cmp eax, r15d + jb L_invalid_distance_too_far ; /* if (dist > wsize) */ + + add ecx, r15d ; /* nbytes = dist - nbytes */ + cmp dword ptr [rsp+96], 0 + jne L_wrap_around_window ; /* if (write != 0) */ + + mov rsi, [rsp+56] ; /* from = window */ + sub eax, ecx ; /* eax -= nbytes */ + add rsi, rax ; /* from += wsize - nbytes */ + + mov eax, r14d ; /* eax = len */ + cmp r14d, ecx + jbe L_do_copy ; /* if (nbytes >= len) */ + + sub eax, ecx ; /* eax -= nbytes */ + rep movsb + mov rsi, rdi + sub rsi, r15 ; /* from = &out[ -dist ] */ + jmp L_do_copy + +ALIGN 4 +L_wrap_around_window: + mov eax, [rsp+96] ; /* eax = write */ + cmp ecx, eax + jbe L_contiguous_in_window ; /* if (write >= nbytes) */ + + mov esi, [rsp+92] ; /* from = wsize */ + add rsi, [rsp+56] ; /* from += window */ + add rsi, rax ; /* from += write */ + sub rsi, rcx ; /* from -= nbytes */ + sub ecx, eax ; /* nbytes -= write */ + + mov eax, r14d ; /* eax = len */ + cmp eax, ecx + jbe L_do_copy ; /* if (nbytes >= len) */ + + sub eax, ecx ; /* len -= nbytes */ + rep movsb + mov rsi, [rsp+56] ; /* from = window */ + mov ecx, [rsp+96] ; /* nbytes = write */ + cmp eax, ecx + jbe L_do_copy ; /* if (nbytes >= len) */ + + sub eax, ecx ; /* len -= nbytes */ + rep movsb + mov rsi, rdi + sub rsi, r15 ; /* from = out - dist */ + jmp L_do_copy + +ALIGN 4 +L_contiguous_in_window: + mov rsi, [rsp+56] ; /* rsi = window */ + add rsi, rax + sub rsi, rcx ; /* from += write - nbytes */ + + mov eax, r14d ; /* eax = len */ + cmp eax, ecx + jbe L_do_copy ; /* if (nbytes >= len) */ + + sub eax, ecx ; /* len -= nbytes */ + rep movsb + mov rsi, rdi + sub rsi, r15 ; /* from = out - dist */ + jmp L_do_copy ; /* if (nbytes >= len) */ + +ALIGN 4 +L_do_copy: + mov ecx, eax ; /* ecx = len */ + rep movsb + + mov rsi, r8 ; /* move in back to %esi, toss from */ + jmp L_while_test + +L_test_for_end_of_block: + test al, 32 + jz L_invalid_literal_length_code + mov dword ptr [rsp+116], 1 + jmp L_break_loop_with_status + +L_invalid_literal_length_code: + mov dword ptr [rsp+116], 2 + jmp L_break_loop_with_status + +L_invalid_distance_code: + mov dword ptr [rsp+116], 3 + jmp L_break_loop_with_status + +L_invalid_distance_too_far: + mov dword ptr [rsp+116], 4 + jmp L_break_loop_with_status + +L_break_loop: + mov dword ptr [rsp+116], 0 + +L_break_loop_with_status: +; /* put in, out, bits, and hold back into ar and pop esp */ + mov [rsp+16], rsi ; /* in */ + mov [rsp+32], rdi ; /* out */ + mov [rsp+88], ebx ; /* bits */ + mov [rsp+80], rdx ; /* hold */ + + mov rax, [rsp] ; /* restore rbp and rsp */ + mov rbp, [rsp+8] + mov rsp, rax + + + + mov rsi,[rsp-8] + mov rdi,[rsp-16] + mov r12,[rsp-24] + mov r13,[rsp-32] + mov r14,[rsp-40] + mov r15,[rsp-48] + mov rbx,[rsp-56] + + ret 0 +; : +; : "m" (ar) +; : "memory", "%rax", "%rbx", "%rcx", "%rdx", "%rsi", "%rdi", +; "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" +; ); + +inffas8664fnc ENDP +;_TEXT ENDS +END |