diff --git a/src/probestack.rs b/src/probestack.rs index f9284e8..9bcaf4f 100644 --- a/src/probestack.rs +++ b/src/probestack.rs @@ -53,6 +53,9 @@ pub unsafe extern "C" fn __rust_probestack() { // The ABI here is that the stack frame size is located in `%eax`. Upon // return we're not supposed to modify `%esp` or `%eax`. asm!(" + pushq %rbp + movq %rsp, %rbp + mov %rax,%r11 // duplicate %rax as we're clobbering %r11 // Main loop, taken in one page increments. We're decrementing rsp by @@ -89,6 +92,7 @@ pub unsafe extern "C" fn __rust_probestack() { // return. add %rax,%rsp + leave ret " ::: "memory" : "volatile"); ::core::intrinsics::unreachable(); @@ -104,6 +108,8 @@ pub unsafe extern "C" fn __rust_probestack() { // // The ABI here is the same as x86_64, except everything is 32-bits large. asm!(" + push %ebp + mov %esp, %ebp push %ecx mov %eax,%ecx @@ -122,6 +128,7 @@ pub unsafe extern "C" fn __rust_probestack() { add %eax,%esp pop %ecx + leave ret " ::: "memory" : "volatile"); ::core::intrinsics::unreachable();