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Fix inline breakpoints on macOS.

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This commit is contained in:
losfair 2019-10-13 20:02:28 +08:00
parent ad3faa0ba0
commit c18bdd52cc
1 changed files with 6 additions and 8 deletions
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14
lib/runtime-core/src/fault.rs
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@ -265,9 +265,7 @@ extern "C" fn signal_trap_handler(
let ip = fault.ip.get();
let end = v.base + v.msm.total_size;
if ip >= v.base && ip < end && ip + magic_size <= end {
if let Some(ib) = read_inline_breakpoint(ARCH, v.backend, unsafe {
std::slice::from_raw_parts(ip as *const u8, magic_size)
}) {
if let Some(ib) = read_inline_breakpoint(ARCH, v.backend, std::slice::from_raw_parts(ip as *const u8, magic_size)) {
fault.ip.set(ip + magic_size);
match ib.ty {
@ -557,7 +555,7 @@ pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *mut c_void) -> F
}
#[cfg(all(target_os = "macos", target_arch = "x86_64"))]
pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *const c_void) -> FaultInfo {
pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *mut c_void) -> FaultInfo {
#[allow(dead_code)]
#[repr(C)]
struct ucontext_t {
@ -566,7 +564,7 @@ pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *const c_void) ->
uc_stack: libc::stack_t,
uc_link: *const ucontext_t,
uc_mcsize: u64,
uc_mcontext: *const mcontext_t,
uc_mcontext: *mut mcontext_t,
}
#[repr(C)]
struct exception_state {
@ -615,8 +613,8 @@ pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *const c_void) ->
let siginfo = siginfo as *const siginfo_t;
let si_addr = (*siginfo).si_addr;
let ucontext = ucontext as *const ucontext_t;
let ss = &(*(*ucontext).uc_mcontext).ss;
let ucontext = ucontext as *mut ucontext_t;
let ss = &mut (*(*ucontext).uc_mcontext).ss;
let fs = &(*(*ucontext).uc_mcontext).fs;
let mut known_registers: [Option<u64>; 24] = [None; 24];
@ -650,7 +648,7 @@ pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *const c_void) ->
FaultInfo {
faulting_addr: si_addr,
ip: ss.rip as _,
ip: std::mem::transmute::<&mut u64, &'static Cell<usize>>(&mut ss.rip),
known_registers,
}
}