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-rw-r--r--libavutil/x86/x86inc.asm218
1 files changed, 114 insertions, 104 deletions
diff --git a/libavutil/x86/x86inc.asm b/libavutil/x86/x86inc.asm
index 7db1e9c311..ea9f9a1550 100644
--- a/libavutil/x86/x86inc.asm
+++ b/libavutil/x86/x86inc.asm
@@ -1,11 +1,12 @@
;*****************************************************************************
;* x86inc.asm: x264asm abstraction layer
;*****************************************************************************
-;* Copyright (C) 2005-2011 x264 project
+;* Copyright (C) 2005-2012 x264 project
;*
;* Authors: Loren Merritt <lorenm@u.washington.edu>
;* Anton Mitrofanov <BugMaster@narod.ru>
;* Jason Garrett-Glaser <darkshikari@gmail.com>
+;* Henrik Gramner <hengar-6@student.ltu.se>
;*
;* Permission to use, copy, modify, and/or distribute this software for any
;* purpose with or without fee is hereby granted, provided that the above
@@ -95,6 +96,9 @@
default rel
%endif
+; Always use long nops (reduces 0x90 spam in disassembly on x86_32)
+CPU amdnop
+
; Macros to eliminate most code duplication between x86_32 and x86_64:
; Currently this works only for leaf functions which load all their arguments
; into registers at the start, and make no other use of the stack. Luckily that
@@ -128,18 +132,20 @@
; rNm is the original location of arg N (a register or on the stack), dword
; rNmp is native size
-%macro DECLARE_REG 6
+%macro DECLARE_REG 5-6
%define r%1q %2
%define r%1d %3
%define r%1w %4
%define r%1b %5
- %define r%1m %6
- %ifid %6 ; i.e. it's a register
+ %if %0 == 5
+ %define r%1m %3
%define r%1mp %2
%elif ARCH_X86_64 ; memory
- %define r%1mp qword %6
+ %define r%1m [rsp + stack_offset + %6]
+ %define r%1mp qword r %+ %1m
%else
- %define r%1mp dword %6
+ %define r%1m [esp + stack_offset + %6]
+ %define r%1mp dword r %+ %1m
%endif
%define r%1 %2
%endmacro
@@ -187,7 +193,7 @@ DECLARE_REG_SIZE bp, bpl
%endrep
%endmacro
-DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9
+DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14
%if ARCH_X86_64
%define gprsize 8
@@ -205,6 +211,33 @@ DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9
%assign stack_offset stack_offset-gprsize
%endmacro
+%macro PUSH_IF_USED 1-*
+ %rep %0
+ %if %1 < regs_used
+ PUSH r%1
+ %endif
+ %rotate 1
+ %endrep
+%endmacro
+
+%macro POP_IF_USED 1-*
+ %rep %0
+ %if %1 < regs_used
+ pop r%1
+ %endif
+ %rotate 1
+ %endrep
+%endmacro
+
+%macro LOAD_IF_USED 1-*
+ %rep %0
+ %if %1 < num_args
+ mov r%1, r %+ %1 %+ mp
+ %endif
+ %rotate 1
+ %endrep
+%endmacro
+
%macro SUB 2
sub %1, %2
%ifidn %1, rsp
@@ -272,39 +305,34 @@ DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9
%if WIN64 ; Windows x64 ;=================================================
-DECLARE_REG 0, rcx, ecx, cx, cl, ecx
-DECLARE_REG 1, rdx, edx, dx, dl, edx
-DECLARE_REG 2, r8, r8d, r8w, r8b, r8d
-DECLARE_REG 3, r9, r9d, r9w, r9b, r9d
-DECLARE_REG 4, rdi, edi, di, dil, [rsp + stack_offset + 40]
-DECLARE_REG 5, rsi, esi, si, sil, [rsp + stack_offset + 48]
-DECLARE_REG 6, rax, eax, ax, al, [rsp + stack_offset + 56]
-%define r7m [rsp + stack_offset + 64]
-%define r8m [rsp + stack_offset + 72]
-
-%macro LOAD_IF_USED 2 ; reg_id, number_of_args
- %if %1 < %2
- mov r%1, [rsp + stack_offset + 8 + %1*8]
- %endif
-%endmacro
+DECLARE_REG 0, rcx, ecx, cx, cl
+DECLARE_REG 1, rdx, edx, dx, dl
+DECLARE_REG 2, R8, R8D, R8W, R8B
+DECLARE_REG 3, R9, R9D, R9W, R9B
+DECLARE_REG 4, R10, R10D, R10W, R10B, 40
+DECLARE_REG 5, R11, R11D, R11W, R11B, 48
+DECLARE_REG 6, rax, eax, ax, al, 56
+DECLARE_REG 7, rdi, edi, di, dil, 64
+DECLARE_REG 8, rsi, esi, si, sil, 72
+DECLARE_REG 9, rbx, ebx, bx, bl, 80
+DECLARE_REG 10, rbp, ebp, bp, bpl, 88
+DECLARE_REG 11, R12, R12D, R12W, R12B, 96
+DECLARE_REG 12, R13, R13D, R13W, R13B, 104
+DECLARE_REG 13, R14, R14D, R14W, R14B, 112
+DECLARE_REG 14, R15, R15D, R15W, R15B, 120
%macro PROLOGUE 2-4+ 0 ; #args, #regs, #xmm_regs, arg_names...
- ASSERT %2 >= %1
+ %assign num_args %1
%assign regs_used %2
- ASSERT regs_used <= 7
- %if regs_used > 4
- push r4
- push r5
- %assign stack_offset stack_offset+16
- %endif
+ ASSERT regs_used >= num_args
+ ASSERT regs_used <= 15
+ PUSH_IF_USED 7, 8, 9, 10, 11, 12, 13, 14
%if mmsize == 8
%assign xmm_regs_used 0
%else
WIN64_SPILL_XMM %3
%endif
- LOAD_IF_USED 4, %1
- LOAD_IF_USED 5, %1
- LOAD_IF_USED 6, %1
+ LOAD_IF_USED 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
DEFINE_ARGS %4
%endmacro
@@ -312,12 +340,11 @@ DECLARE_REG 6, rax, eax, ax, al, [rsp + stack_offset + 56]
%assign xmm_regs_used %1
ASSERT xmm_regs_used <= 16
%if xmm_regs_used > 6
- sub rsp, (xmm_regs_used-6)*16+16
- %assign stack_offset stack_offset+(xmm_regs_used-6)*16+16
+ SUB rsp, (xmm_regs_used-6)*16+16
%assign %%i xmm_regs_used
%rep (xmm_regs_used-6)
%assign %%i %%i-1
- movdqa [rsp + (%%i-6)*16+8], xmm %+ %%i
+ movdqa [rsp + (%%i-6)*16+(~stack_offset&8)], xmm %+ %%i
%endrep
%endif
%endmacro
@@ -327,7 +354,7 @@ DECLARE_REG 6, rax, eax, ax, al, [rsp + stack_offset + 56]
%assign %%i xmm_regs_used
%rep (xmm_regs_used-6)
%assign %%i %%i-1
- movdqa xmm %+ %%i, [%1 + (%%i-6)*16+8]
+ movdqa xmm %+ %%i, [%1 + (%%i-6)*16+(~stack_offset&8)]
%endrep
add %1, (xmm_regs_used-6)*16+16
%endif
@@ -341,15 +368,12 @@ DECLARE_REG 6, rax, eax, ax, al, [rsp + stack_offset + 56]
%macro RET 0
WIN64_RESTORE_XMM_INTERNAL rsp
- %if regs_used > 4
- pop r5
- pop r4
- %endif
+ POP_IF_USED 14, 13, 12, 11, 10, 9, 8, 7
ret
%endmacro
%macro REP_RET 0
- %if regs_used > 4 || xmm_regs_used > 6
+ %if regs_used > 7 || xmm_regs_used > 6
RET
%else
rep ret
@@ -358,92 +382,80 @@ DECLARE_REG 6, rax, eax, ax, al, [rsp + stack_offset + 56]
%elif ARCH_X86_64 ; *nix x64 ;=============================================
-DECLARE_REG 0, rdi, edi, di, dil, edi
-DECLARE_REG 1, rsi, esi, si, sil, esi
-DECLARE_REG 2, rdx, edx, dx, dl, edx
-DECLARE_REG 3, rcx, ecx, cx, cl, ecx
-DECLARE_REG 4, r8, r8d, r8w, r8b, r8d
-DECLARE_REG 5, r9, r9d, r9w, r9b, r9d
-DECLARE_REG 6, rax, eax, ax, al, [rsp + stack_offset + 8]
-%define r7m [rsp + stack_offset + 16]
-%define r8m [rsp + stack_offset + 24]
-
-%macro LOAD_IF_USED 2 ; reg_id, number_of_args
- %if %1 < %2
- mov r%1, [rsp - 40 + %1*8]
- %endif
-%endmacro
+DECLARE_REG 0, rdi, edi, di, dil
+DECLARE_REG 1, rsi, esi, si, sil
+DECLARE_REG 2, rdx, edx, dx, dl
+DECLARE_REG 3, rcx, ecx, cx, cl
+DECLARE_REG 4, R8, R8D, R8W, R8B
+DECLARE_REG 5, R9, R9D, R9W, R9B
+DECLARE_REG 6, rax, eax, ax, al, 8
+DECLARE_REG 7, R10, R10D, R10W, R10B, 16
+DECLARE_REG 8, R11, R11D, R11W, R11B, 24
+DECLARE_REG 9, rbx, ebx, bx, bl, 32
+DECLARE_REG 10, rbp, ebp, bp, bpl, 40
+DECLARE_REG 11, R12, R12D, R12W, R12B, 48
+DECLARE_REG 12, R13, R13D, R13W, R13B, 56
+DECLARE_REG 13, R14, R14D, R14W, R14B, 64
+DECLARE_REG 14, R15, R15D, R15W, R15B, 72
%macro PROLOGUE 2-4+ ; #args, #regs, #xmm_regs, arg_names...
- ASSERT %2 >= %1
- ASSERT %2 <= 7
- LOAD_IF_USED 6, %1
+ %assign num_args %1
+ %assign regs_used %2
+ ASSERT regs_used >= num_args
+ ASSERT regs_used <= 15
+ PUSH_IF_USED 9, 10, 11, 12, 13, 14
+ LOAD_IF_USED 6, 7, 8, 9, 10, 11, 12, 13, 14
DEFINE_ARGS %4
%endmacro
%macro RET 0
+ POP_IF_USED 14, 13, 12, 11, 10, 9
ret
%endmacro
%macro REP_RET 0
- rep ret
+ %if regs_used > 9
+ RET
+ %else
+ rep ret
+ %endif
%endmacro
%else ; X86_32 ;==============================================================
-DECLARE_REG 0, eax, eax, ax, al, [esp + stack_offset + 4]
-DECLARE_REG 1, ecx, ecx, cx, cl, [esp + stack_offset + 8]
-DECLARE_REG 2, edx, edx, dx, dl, [esp + stack_offset + 12]
-DECLARE_REG 3, ebx, ebx, bx, bl, [esp + stack_offset + 16]
-DECLARE_REG 4, esi, esi, si, null, [esp + stack_offset + 20]
-DECLARE_REG 5, edi, edi, di, null, [esp + stack_offset + 24]
-DECLARE_REG 6, ebp, ebp, bp, null, [esp + stack_offset + 28]
-%define r7m [esp + stack_offset + 32]
-%define r8m [esp + stack_offset + 36]
+DECLARE_REG 0, eax, eax, ax, al, 4
+DECLARE_REG 1, ecx, ecx, cx, cl, 8
+DECLARE_REG 2, edx, edx, dx, dl, 12
+DECLARE_REG 3, ebx, ebx, bx, bl, 16
+DECLARE_REG 4, esi, esi, si, null, 20
+DECLARE_REG 5, edi, edi, di, null, 24
+DECLARE_REG 6, ebp, ebp, bp, null, 28
%define rsp esp
-%macro PUSH_IF_USED 1 ; reg_id
- %if %1 < regs_used
- push r%1
- %assign stack_offset stack_offset+4
- %endif
-%endmacro
-
-%macro POP_IF_USED 1 ; reg_id
- %if %1 < regs_used
- pop r%1
- %endif
+%macro DECLARE_ARG 1-*
+ %rep %0
+ %define r%1m [esp + stack_offset + 4*%1 + 4]
+ %define r%1mp dword r%1m
+ %rotate 1
+ %endrep
%endmacro
-%macro LOAD_IF_USED 2 ; reg_id, number_of_args
- %if %1 < %2
- mov r%1, [esp + stack_offset + 4 + %1*4]
- %endif
-%endmacro
+DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
%macro PROLOGUE 2-4+ ; #args, #regs, #xmm_regs, arg_names...
- ASSERT %2 >= %1
+ %assign num_args %1
%assign regs_used %2
- ASSERT regs_used <= 7
- PUSH_IF_USED 3
- PUSH_IF_USED 4
- PUSH_IF_USED 5
- PUSH_IF_USED 6
- LOAD_IF_USED 0, %1
- LOAD_IF_USED 1, %1
- LOAD_IF_USED 2, %1
- LOAD_IF_USED 3, %1
- LOAD_IF_USED 4, %1
- LOAD_IF_USED 5, %1
- LOAD_IF_USED 6, %1
+ %if regs_used > 7
+ %assign regs_used 7
+ %endif
+ ASSERT regs_used >= num_args
+ PUSH_IF_USED 3, 4, 5, 6
+ LOAD_IF_USED 0, 1, 2, 3, 4, 5, 6
DEFINE_ARGS %4
%endmacro
%macro RET 0
- POP_IF_USED 6
- POP_IF_USED 5
- POP_IF_USED 4
- POP_IF_USED 3
+ POP_IF_USED 6, 5, 4, 3
ret
%endmacro
@@ -464,8 +476,6 @@ DECLARE_REG 6, ebp, ebp, bp, null, [esp + stack_offset + 28]
%endmacro
%endif
-
-
;=============================================================================
; arch-independent part
;=============================================================================
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-13 01:29:45 +0000