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https://github.com/fluencelabs/wasmer
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Port to FreeBSD
This commit is contained in:
MikaelUrankar
@ -500,6 +500,249 @@ impl FaultInfo {
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}
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}
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#[cfg(all(target_os = "freebsd", target_arch = "aarch64"))]
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/// Get fault info from siginfo and ucontext.
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pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *mut c_void) -> FaultInfo {
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#[repr(C)]
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pub struct ucontext_t {
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uc_sigmask: libc::sigset_t,
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uc_mcontext: mcontext_t,
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uc_link: *mut ucontext_t,
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uc_stack: libc::stack_t,
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uc_flags: i32,
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__spare__: [i32; 4],
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}
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#[repr(C)]
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pub struct gpregs {
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gp_x: [u64; 30],
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gp_lr: u64,
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gp_sp: u64,
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gp_elr: u64,
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gp_spsr: u64,
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gp_pad: i32,
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};
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#[repr(C)]
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pub struct fpregs {
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fp_q: [u128; 32],
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fp_sr: u32,
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fp_cr: u32,
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fp_flags: i32,
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fp_pad: i32,
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};
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#[repr(C)]
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pub struct mcontext_t {
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mc_gpregs: gpregs,
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mc_fpregs: fpregs,
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mc_flags: i32,
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mc_pad: i32,
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mc_spare: [u64; 8],
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}
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let siginfo = siginfo as *const siginfo_t;
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let si_addr = (*siginfo).si_addr;
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let ucontext = ucontext as *mut ucontext_t;
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let gregs = &(*ucontext).uc_mcontext.mc_gpregs;
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let mut known_registers: [Option<u64>; 32] = [None; 32];
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known_registers[X64Register::GPR(GPR::R15).to_index().0] = Some(gregs.gp_x[15] as _);
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known_registers[X64Register::GPR(GPR::R14).to_index().0] = Some(gregs.gp_x[14] as _);
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known_registers[X64Register::GPR(GPR::R13).to_index().0] = Some(gregs.gp_x[13] as _);
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known_registers[X64Register::GPR(GPR::R12).to_index().0] = Some(gregs.gp_x[12] as _);
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known_registers[X64Register::GPR(GPR::R11).to_index().0] = Some(gregs.gp_x[11] as _);
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known_registers[X64Register::GPR(GPR::R10).to_index().0] = Some(gregs.gp_x[10] as _);
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known_registers[X64Register::GPR(GPR::R9).to_index().0] = Some(gregs.gp_x[9] as _);
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known_registers[X64Register::GPR(GPR::R8).to_index().0] = Some(gregs.gp_x[8] as _);
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known_registers[X64Register::GPR(GPR::RSI).to_index().0] = Some(gregs.gp_x[6] as _);
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known_registers[X64Register::GPR(GPR::RDI).to_index().0] = Some(gregs.gp_x[7] as _);
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known_registers[X64Register::GPR(GPR::RDX).to_index().0] = Some(gregs.gp_x[2] as _);
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known_registers[X64Register::GPR(GPR::RCX).to_index().0] = Some(gregs.gp_x[1] as _);
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known_registers[X64Register::GPR(GPR::RBX).to_index().0] = Some(gregs.gp_x[3] as _);
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known_registers[X64Register::GPR(GPR::RAX).to_index().0] = Some(gregs.gp_x[0] as _);
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known_registers[X64Register::GPR(GPR::RBP).to_index().0] = Some(gregs.gp_x[5] as _);
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known_registers[X64Register::GPR(GPR::RSP).to_index().0] = Some(gregs.gp_x[28] as _);
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FaultInfo {
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faulting_addr: si_addr as usize as _,
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ip: std::mem::transmute::<&mut u64, &'static Cell<usize>>(
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&mut (*ucontext).uc_mcontext.mc_gpregs.gp_elr,
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),
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known_registers,
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}
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}
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#[cfg(all(target_os = "freebsd", target_arch = "x86_64"))]
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/// Get fault info from siginfo and ucontext.
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pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *mut c_void) -> FaultInfo {
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use crate::state::x64::XMM;
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#[repr(C)]
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pub struct ucontext_t {
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uc_sigmask: libc::sigset_t,
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uc_mcontext: mcontext_t,
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uc_link: *mut ucontext_t,
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uc_stack: libc::stack_t,
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uc_flags: i32,
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__spare__: [i32; 4],
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}
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#[repr(C)]
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pub struct mcontext_t {
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mc_onstack: u64,
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mc_rdi: u64,
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mc_rsi: u64,
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mc_rdx: u64,
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mc_rcx: u64,
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mc_r8: u64,
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mc_r9: u64,
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mc_rax: u64,
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mc_rbx: u64,
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mc_rbp: u64,
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mc_r10: u64,
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mc_r11: u64,
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mc_r12: u64,
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mc_r13: u64,
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mc_r14: u64,
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mc_r15: u64,
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mc_trapno: u32,
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mc_fs: u16,
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mc_gs: u16,
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mc_addr: u64,
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mc_flags: u32,
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mc_es: u16,
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mc_ds: u16,
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mc_err: u64,
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mc_rip: u64,
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mc_cs: u64,
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mc_rflags: u64,
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mc_rsp: u64,
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mc_ss: u64,
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mc_len: i64,
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mc_fpformat: i64,
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mc_ownedfp: i64,
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mc_savefpu: *const savefpu,
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mc_fpstate: [i64; 63], // mc_fpstate[0] is a pointer to savefpu
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mc_fsbase: u64,
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mc_gsbase: u64,
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mc_xfpustate: u64,
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mc_xfpustate_len: u64,
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mc_spare: [i64; 4],
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}
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#[repr(C)]
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pub struct xmmacc {
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element: [u32; 4],
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}
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#[repr(C)]
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pub struct __envxmm64 {
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en_cw: u16,
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en_sw: u16,
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en_tw: u8,
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en_zero: u8,
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en_opcode: u16,
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en_rip: u64,
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en_rdp: u64,
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en_mxcsr: u32,
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en_mxcsr_mask: u32,
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}
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#[repr(C)]
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pub struct fpacc87 {
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fp_bytes: [u8; 10],
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}
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#[repr(C)]
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pub struct sv_fp {
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fp_acc: fpacc87,
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fp_pad: [u8; 6],
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}
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#[repr(C, align(16))]
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pub struct savefpu {
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sv_env: __envxmm64,
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sv_fp_t: [sv_fp; 8],
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sv_xmm: [xmmacc; 16],
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sv_pad: [u8; 96],
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}
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let siginfo = siginfo as *const siginfo_t;
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let si_addr = (*siginfo).si_addr;
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let ucontext = ucontext as *mut ucontext_t;
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let gregs = &mut (*ucontext).uc_mcontext;
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fn read_xmm(reg: &xmmacc) -> u64 {
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(reg.element[0] as u64) | ((reg.element[1] as u64) << 32)
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}
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let mut known_registers: [Option<u64>; 32] = [None; 32];
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known_registers[X64Register::GPR(GPR::R15).to_index().0] = Some(gregs.mc_r15);
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known_registers[X64Register::GPR(GPR::R14).to_index().0] = Some(gregs.mc_r14);
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known_registers[X64Register::GPR(GPR::R13).to_index().0] = Some(gregs.mc_r13);
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known_registers[X64Register::GPR(GPR::R12).to_index().0] = Some(gregs.mc_r12);
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known_registers[X64Register::GPR(GPR::R11).to_index().0] = Some(gregs.mc_r11);
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known_registers[X64Register::GPR(GPR::R10).to_index().0] = Some(gregs.mc_r10);
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known_registers[X64Register::GPR(GPR::R9).to_index().0] = Some(gregs.mc_r9);
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known_registers[X64Register::GPR(GPR::R8).to_index().0] = Some(gregs.mc_r8);
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known_registers[X64Register::GPR(GPR::RSI).to_index().0] = Some(gregs.mc_rsi);
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known_registers[X64Register::GPR(GPR::RDI).to_index().0] = Some(gregs.mc_rdi);
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known_registers[X64Register::GPR(GPR::RDX).to_index().0] = Some(gregs.mc_rdx);
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known_registers[X64Register::GPR(GPR::RCX).to_index().0] = Some(gregs.mc_rcx);
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known_registers[X64Register::GPR(GPR::RBX).to_index().0] = Some(gregs.mc_rbx);
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known_registers[X64Register::GPR(GPR::RAX).to_index().0] = Some(gregs.mc_rax);
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known_registers[X64Register::GPR(GPR::RBP).to_index().0] = Some(gregs.mc_rbp);
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known_registers[X64Register::GPR(GPR::RSP).to_index().0] = Some(gregs.mc_rsp);
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// https://lists.freebsd.org/pipermail/freebsd-arch/2011-December/012077.html
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// https://people.freebsd.org/~kib/misc/defer_sig.c
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const _MC_HASFPXSTATE: u32 = 0x4;
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if (gregs.mc_flags & _MC_HASFPXSTATE) == 0 {
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// XXX mc_fpstate[0] is actually a pointer to a struct savefpu
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let fpregs = &*(*ucontext).uc_mcontext.mc_savefpu;
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known_registers[X64Register::XMM(XMM::XMM0).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[0]));
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known_registers[X64Register::XMM(XMM::XMM1).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[1]));
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known_registers[X64Register::XMM(XMM::XMM2).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[2]));
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known_registers[X64Register::XMM(XMM::XMM3).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[3]));
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known_registers[X64Register::XMM(XMM::XMM4).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[4]));
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known_registers[X64Register::XMM(XMM::XMM5).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[5]));
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known_registers[X64Register::XMM(XMM::XMM6).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[6]));
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known_registers[X64Register::XMM(XMM::XMM7).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[7]));
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known_registers[X64Register::XMM(XMM::XMM8).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[8]));
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known_registers[X64Register::XMM(XMM::XMM9).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[9]));
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known_registers[X64Register::XMM(XMM::XMM10).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[10]));
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known_registers[X64Register::XMM(XMM::XMM11).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[11]));
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known_registers[X64Register::XMM(XMM::XMM12).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[12]));
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known_registers[X64Register::XMM(XMM::XMM13).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[13]));
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known_registers[X64Register::XMM(XMM::XMM14).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[14]));
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known_registers[X64Register::XMM(XMM::XMM15).to_index().0] =
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Some(read_xmm(&fpregs.sv_xmm[15]));
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}
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FaultInfo {
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faulting_addr: si_addr,
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ip: std::mem::transmute::<&mut u64, &'static Cell<usize>>(
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&mut (*ucontext).uc_mcontext.mc_rip,
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),
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known_registers,
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}
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}
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#[cfg(all(target_os = "linux", target_arch = "aarch64"))]
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/// Get fault info from siginfo and ucontext.
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pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *mut c_void) -> FaultInfo {
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