diff options
Diffstat (limited to 'zh-cn/julia-cn.html.markdown')
| -rw-r--r-- | zh-cn/julia-cn.html.markdown | 107 |
1 files changed, 54 insertions, 53 deletions
diff --git a/zh-cn/julia-cn.html.markdown b/zh-cn/julia-cn.html.markdown index f54a4d4c..99b27464 100644 --- a/zh-cn/julia-cn.html.markdown +++ b/zh-cn/julia-cn.html.markdown @@ -748,50 +748,51 @@ square_area(l) = l * l # => square_area (generic function with 1 method) square_area(5) # => 25 # 当我们喂给 square_area 一个整数时会发生什么？ -code_native(square_area, (Int32,)) +code_native(square_area, (Int32,), syntax = :intel) + # .text + # ; Function square_area { + # ; Location: REPL[116]:1 # 函数序言 (Prologue) + # push rbp + # mov rbp, rsp + # ; Function *; { + # ; Location: int.jl:54 + # imul ecx, ecx # 求 l 的平方，并把结果放在 ECX 中 + # ;} + # mov eax, ecx + # pop rbp # 还原旧的基址指针(base pointer) + # ret # 返回值放在 EAX 中 + # nop dword ptr [rax + rax] + # ;} +# 使用 syntax 参数指定输出语法。默认为 AT&T 格式，这里指定为 Intel 格式 + +code_native(square_area, (Float32,), syntax = :intel) # .text # ; Function square_area { - # ; Location: REPL[49]:1 - # pushq %rbp - # movq %rsp, %rbp - # ; Function *; { - # ; Location: int.jl:54 - # imull %ecx, %ecx - # ;} - # movl %ecx, %eax - # popq %rbp - # retq - # nopl (%rax,%rax) - # ;} - -code_native(square_area, (Float32,)) - # .text - # ; Function square_area { - # ; Location: REPL[49]:1 - # pushq %rbp - # movq %rsp, %rbp + # ; Location: REPL[116]:1 + # push rbp + # mov rbp, rsp # ; Function *; { # ; Location: float.jl:398 - # vmulss %xmm0, %xmm0, %xmm0 + # vmulss xmm0, xmm0, xmm0 # 标量双精度乘法 (AVX) # ;} - # popq %rbp - # retq - # nopw (%rax,%rax) + # pop rbp + # ret + # nop word ptr [rax + rax] # ;} -code_native(square_area, (Float64,)) +code_native(square_area, (Float64,), syntax = :intel) # .text # ; Function square_area { - # ; Location: REPL[49]:1 - # pushq %rbp - # movq %rsp, %rbp + # ; Location: REPL[116]:1 + # push rbp + # mov rbp, rsp # ; Function *; { # ; Location: float.jl:399 - # vmulsd %xmm0, %xmm0, %xmm0 + # vmulsd xmm0, xmm0, xmm0 # 标量双精度乘法 (AVX) # ;} - # popq %rbp - # retq - # nopw (%rax,%rax) + # pop rbp + # ret + # nop word ptr [rax + rax] # ;} # 注意！只要参数中有浮点数，Julia 就会使用浮点指令 @@ -799,12 +800,12 @@ code_native(square_area, (Float64,)) circle_area(r) = pi * r * r # => circle_area (generic function with 1 method) circle_area(5) # => 78.53981633974483 -code_native(circle_area, (Int32,)) +code_native(circle_area, (Int32,), syntax = :intel) # .text # ; Function circle_area { - # ; Location: REPL[53]:1 - # pushq %rbp - # movq %rsp, %rbp + # ; Location: REPL[121]:1 + # push rbp + # mov rbp, rsp # ; Function *; { # ; Location: operators.jl:502 # ; Function *; { @@ -817,41 +818,41 @@ code_native(circle_area, (Int32,)) # ; Location: number.jl:7 # ; Function Type; { # ; Location: float.jl:60 - # vcvtsi2sdl %ecx, %xmm0, %xmm0 - # movabsq $532051920, %rax # imm = 0x1FB677D0 + # vcvtsi2sd xmm0, xmm0, ecx # 从内存中读取整数 r + # movabs rax, 497710928 # 读取 pi # ;}}}}} # ; Function *; { # ; Location: float.jl:399 - # vmulsd (%rax), %xmm0, %xmm1 - # vmulsd %xmm0, %xmm1, %xmm0 + # vmulsd xmm1, xmm0, qword ptr [rax] # pi * r + # vmulsd xmm0, xmm1, xmm0 # (pi * r) * r # ;}} - # popq %rbp - # retq - # nopl (%rax) + # pop rbp + # ret + # nop dword ptr [rax] # ;} -code_native(circle_area, (Float64,)) +code_native(circle_area, (Float64,), syntax = :intel) # .text # ; Function circle_area { - # ; Location: REPL[53]:1 - # pushq %rbp - # movq %rsp, %rbp - # movabsq $532052040, %rax # imm = 0x1FB67848 + # ; Location: REPL[121]:1 + # push rbp + # mov rbp, rsp + # movabs rax, 497711048 # ; Function *; { # ; Location: operators.jl:502 # ; Function *; { # ; Location: promotion.jl:314 # ; Function *; { # ; Location: float.jl:399 - # vmulsd (%rax), %xmm0, %xmm1 + # vmulsd xmm1, xmm0, qword ptr [rax] # ;}}} # ; Function *; { # ; Location: float.jl:399 - # vmulsd %xmm0, %xmm1, %xmm0 + # vmulsd xmm0, xmm1, xmm0 # ;} - # popq %rbp - # retq - # nopl (%rax,%rax) + # pop rbp + # ret + # nop dword ptr [rax + rax] # ;} ``` |