这里我们对Stack Pointer减16,这样我们为新的Stack Frame创建了16字节的空间。之后我们将Return address保存在Stack Pointer位置。 之后就是调用sum_to并对结果乘以2。最后是Epllogue, 这里首先将Return address加载回ra寄存器,通过对Stack Pointer加16来删除刚刚创建的Stack Frame,最后ret从函数中退出。 如果我们删除掉P...
(1)ESP:栈指针寄存器(extended stack pointer),其内存放着一个指针,该指针永远指向系统栈最上面一个栈帧的栈顶。 (2)EBP:基址指针寄存器(extended base pointer),其内存放着一个指针,该指针永远指向系统栈最上面一个栈帧的底部。 因为esp在函数运行时会不断的变化,所以保存一个一进入某个函数的 esp 到 ebp ...
With STOP enabled, the compiler adds a call to a stack limit-check routine wherever necessary, before adjusting the stack pointer. The STOP option for the highly optimizing SEGGER Compiler can be easily switched on, without any change to application code. This way, all stack overflows are ...
Int32 v; RegValOrigin o; } RegData; Code 1: Representation of a register in the model ARM. Creating an array ofRegDatastructures then allows the register file to be emulated. The Program Counter (PC) and Stack Pointer (SP) can be added to the register file to give the model a basis...
riscv: stacktrace: fixed walk_stackframe() Browse files commit a2a4d4a upstream. If the load access fault occures in a leaf function (with CONFIG_FRAME_POINTER=y), when wrong stack trace will be displayed: [<ffffffff804853c2>] regmap_mmio_read32le+0xe/0x1c ---[ end trace ...
Failed with Linking process. [...] riscv64-linux-gnu-gcc -Wl,--build-id=none -nostartfiles -nostdlib -static -o pk pk.o -L. -lpk -lmachine -lsoftfloat -lutil -lgcc -T ../pk/pk.lds pk.o: In function rest_of_boot_loader': pk.c:(.text+0x0):...
452 + #[cfg(riscv)] 453 + #[export_name = "hal_main"] 454 + fn hal_main(a0: usize, a1: usize, a2: usize) -> ! { 455 + extern "Rust" { 456 + // This symbol will be provided by the user via `#[entry]` 457 + fn main(a0: usize, a1: usize, a2: usize) -...
基于Frame Pointer 的方法相对比较简单,本文针对该方法做了一点小结,欢迎大家拍砖。 为方便以后文档的版本管理和编辑,以后所有文档都放到 gitee 上了,知乎只作为一个入口。 正文请访问: articles/20220719-stackuw-fp.md · aosp-riscv/working-group - Gitee.comgitee.com/aosp-riscv/working-group/blob/maste...
to the register file location that is the current top of the stack, while a remap bit in the status register indicates that registers specified in native instructions are remapped as the maximum Java™ operand stack pointer value minus the present value of the Java™ operand stack pointer....
最经典、最简单的stack unwinding基于frame pointer:固定一个寄存器为frame pointer(在x86-64上为RBP),函数prologue处把frame pointer放入栈帧,并更新frame pointer为保存的frame pointer的地址。 frame pointer值和栈上保存的值形成了一个单链表。获取初始frame pointer值(__builtin_frame_address)后,不停解引用frame...