为什么frida-Stalker不能打印浮点寄存器的数据?

[eachlove]

Why can't Frida stallker print data from floating-point registers?

[b1ueb1ues]

frida can't support these registers now.
I use let s0 = ptr(this.context.sp-0x90).readFloat(); A trick to read/write register

[XUCharles]

frida can't support these registers now. I use let s0 = ptr(this.context.sp-0x90).readFloat(); A trick to read/write register

why is the sp register minus 0x90 offset the s0 register??

[b1ueb1ues]

frida can't support these registers now. I use let s0 = ptr(this.context.sp-0x90).readFloat(); A trick to read/write register

why is the sp register minus 0x90 offset the s0 register??

frida need to save register on stack before do anything else, and restore them after. So we show/edit register data frida stored on stack.

[XUCharles]

frida can't support these registers now. I use let s0 = ptr(this.context.sp-0x90).readFloat(); A trick to read/write register

why is the sp register minus 0x90 offset the s0 register??

frida need to save register on stack before do anything else, and restore them after. So we show/edit register data frida stored on stack.

So the offset is not a fixed 0x90, it's contextual and only specific to your case?

[b1ueb1ues]

frida can't support these registers now. I use let s0 = ptr(this.context.sp-0x90).readFloat(); A trick to read/write register

why is the sp register minus 0x90 offset the s0 register??

frida need to save register on stack before do anything else, and restore them after. So we show/edit register data frida stored on stack.

So the offset is not a fixed 0x90, it's contextual and only specific to your case?

I'm not sure. Afaik it depend on libunwind that frida use, maybe fixed.

[shatyuka]

Close this issue? https://frida.re/news/2022/06/18/frida-15-1-25-released/ https://github.com/frida/frida-gum/pull/658