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use super::CrashContext;
use crate::{minidump_cpu::RawContextCPU, minidump_format::format::ContextFlagsX86};
use libc::{
REG_CS, REG_DS, REG_EAX, REG_EBP, REG_EBX, REG_ECX, REG_EDI, REG_EDX, REG_EFL, REG_EIP, REG_ES,
REG_ESI, REG_ESP, REG_FS, REG_GS, REG_SS, REG_UESP,
};
impl CrashContext {
pub fn get_instruction_pointer(&self) -> usize {
self.inner.context.uc_mcontext.gregs[REG_EIP as usize] as usize
}
pub fn get_stack_pointer(&self) -> usize {
self.inner.context.uc_mcontext.gregs[REG_ESP as usize] as usize
}
pub fn fill_cpu_context(&self, out: &mut RawContextCPU) {
out.context_flags = ContextFlagsX86::CONTEXT_X86_FULL.bits()
| ContextFlagsX86::CONTEXT_X86_FLOATING_POINT.bits();
{
let gregs = &self.inner.context.uc_mcontext.gregs;
out.gs = gregs[REG_GS as usize] as u32;
out.fs = gregs[REG_FS as usize] as u32;
out.es = gregs[REG_ES as usize] as u32;
out.ds = gregs[REG_DS as usize] as u32;
out.edi = gregs[REG_EDI as usize] as u32;
out.esi = gregs[REG_ESI as usize] as u32;
out.ebx = gregs[REG_EBX as usize] as u32;
out.edx = gregs[REG_EDX as usize] as u32;
out.ecx = gregs[REG_ECX as usize] as u32;
out.eax = gregs[REG_EAX as usize] as u32;
out.ebp = gregs[REG_EBP as usize] as u32;
out.eip = gregs[REG_EIP as usize] as u32;
out.cs = gregs[REG_CS as usize] as u32;
out.eflags = gregs[REG_EFL as usize] as u32;
out.esp = gregs[REG_UESP as usize] as u32;
out.ss = gregs[REG_SS as usize] as u32;
}
{
let fs = &self.inner.float_state;
let out = &mut out.float_save;
out.control_word = fs.cw;
out.status_word = fs.sw;
out.tag_word = fs.tag;
out.error_offset = fs.ipoff;
out.error_selector = fs.cssel;
out.data_offset = fs.dataoff;
out.data_selector = fs.datasel;
debug_assert_eq!(fs._st.len() * std::mem::size_of::<libc::_libc_fpreg>(), 80);
out.register_area.copy_from_slice(unsafe {
std::slice::from_raw_parts(
fs._st.as_ptr().cast(),
fs._st.len() * std::mem::size_of::<libc::_libc_fpreg>(),
)
});
}
}
}
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