Ron Williams
180 lines
4.3 KiB
Rust
180 lines
4.3 KiB
Rust
use super::{siginfo_t, sigset_t, stack_t};
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use crate::platform::types::*;
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use core::arch::global_asm;
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// Needs to be defined in assembly because it can't have a function prologue
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// rax is register, 15 is RT_SIGRETURN
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#[cfg(target_arch = "x86_64")]
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global_asm!(
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"
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.global __restore_rt
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__restore_rt:
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mov rax, 15
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syscall
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"
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);
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// x8 is register, 139 is RT_SIGRETURN
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#[cfg(target_arch = "aarch64")]
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global_asm!(
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"
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.global __restore_rt
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__restore_rt:
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mov x8, #139
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svc 0
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"
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);
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#[cfg(target_arch = "riscv64")]
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global_asm!(
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"
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.global __restore_rt
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__restore_rt:
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li a7, 139
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ecall
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"
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);
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pub const SIGHUP: usize = 1;
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pub const SIGINT: usize = 2;
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pub const SIGQUIT: usize = 3;
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pub const SIGILL: usize = 4;
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pub const SIGTRAP: usize = 5;
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pub const SIGABRT: usize = 6;
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pub const SIGIOT: usize = SIGABRT;
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pub const SIGBUS: usize = 7;
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pub const SIGFPE: usize = 8;
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pub const SIGKILL: usize = 9;
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pub const SIGUSR1: usize = 10;
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pub const SIGSEGV: usize = 11;
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pub const SIGUSR2: usize = 12;
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pub const SIGPIPE: usize = 13;
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pub const SIGALRM: usize = 14;
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pub const SIGTERM: usize = 15;
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pub const SIGSTKFLT: usize = 16;
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pub const SIGCHLD: usize = 17;
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pub const SIGCONT: usize = 18;
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pub const SIGSTOP: usize = 19;
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pub const SIGTSTP: usize = 20;
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pub const SIGTTIN: usize = 21;
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pub const SIGTTOU: usize = 22;
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pub const SIGURG: usize = 23;
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pub const SIGXCPU: usize = 24;
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pub const SIGXFSZ: usize = 25;
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pub const SIGVTALRM: usize = 26;
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pub const SIGPROF: usize = 27;
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pub const SIGWINCH: usize = 28;
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pub const SIGIO: usize = 29;
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pub const SIGPOLL: usize = SIGIO;
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pub const SIGPWR: usize = 30;
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pub const SIGSYS: usize = 31;
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pub const SIGUNUSED: usize = SIGSYS;
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pub const NSIG: usize = 32;
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pub const SIGRTMIN: usize = 35; // TODO: decrease to 34
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pub const SIGRTMAX: usize = 64;
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pub const SA_NOCLDSTOP: usize = 1;
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pub const SA_NOCLDWAIT: usize = 2;
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pub const SA_SIGINFO: usize = 4;
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pub const SA_ONSTACK: usize = 0x0800_0000;
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pub const SA_RESTART: usize = 0x1000_0000;
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pub const SA_NODEFER: usize = 0x4000_0000;
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pub const SA_RESETHAND: usize = 0x8000_0000;
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pub const SA_RESTORER: usize = 0x0400_0000;
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pub const SS_ONSTACK: usize = 1;
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pub const SS_DISABLE: usize = 2;
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// Those two should be updated from kernel headers
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pub const MINSIGSTKSZ: usize = 2048;
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pub const SIGSTKSZ: usize = 8096;
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pub const SI_QUEUE: i32 = -1;
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pub const SI_USER: i32 = 0;
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pub const SI_TIMER: i32 = 1;
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pub const SI_ASYNCIO: i32 = 2;
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pub const SI_MESGQ: i32 = 3;
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// si_code values (signal-specific)
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pub const ILL_ILLOPC: i32 = 1;
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pub const ILL_ILLOPN: i32 = 2;
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pub const ILL_ILLADR: i32 = 3;
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pub const ILL_ILLTRP: i32 = 4;
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pub const ILL_PRVOPC: i32 = 5;
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pub const ILL_PRVREG: i32 = 6;
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pub const ILL_COPROC: i32 = 7;
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pub const ILL_BADSTK: i32 = 8;
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pub const FPE_INTDIV: i32 = 1;
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pub const FPE_INTOVF: i32 = 2;
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pub const FPE_FLTDIV: i32 = 3;
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pub const FPE_FLTOVF: i32 = 4;
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pub const FPE_FLTUND: i32 = 5;
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pub const FPE_FLTRES: i32 = 6;
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pub const FPE_FLTINV: i32 = 7;
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pub const FPE_FLTSUB: i32 = 8;
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pub const SEGV_MAPERR: i32 = 1;
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pub const SEGV_ACCERR: i32 = 2;
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pub const BUS_ADRALN: i32 = 1;
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pub const BUS_ADRERR: i32 = 2;
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pub const BUS_OBJERR: i32 = 3;
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pub const TRAP_BRKPT: i32 = 1;
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pub const TRAP_TRACE: i32 = 2;
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pub const CLD_EXITED: i32 = 1;
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pub const CLD_KILLED: i32 = 2;
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pub const CLD_DUMPED: i32 = 3;
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pub const CLD_TRAPPED: i32 = 4;
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pub const CLD_STOPPED: i32 = 5;
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pub const CLD_CONTINUED: i32 = 6;
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// Mirrors the ucontext_t struct from the libc crate on Linux.
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pub(crate) type ucontext_t = ucontext;
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pub(crate) type mcontext_t = mcontext;
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#[repr(C)]
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pub struct ucontext {
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pub uc_flags: c_ulong,
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pub uc_link: *mut ucontext_t,
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pub uc_stack: stack_t,
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pub uc_mcontext: mcontext_t,
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pub uc_sigmask: sigset_t,
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__private: [u8; 512],
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}
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#[repr(C)]
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pub struct _libc_fpstate {
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pub cwd: u16,
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pub swd: u16,
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pub ftw: u16,
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pub fop: u16,
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pub rip: u64,
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pub rdp: u64,
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pub mxcsr: u32,
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pub mxcr_mask: u32,
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pub _st: [_libc_fpxreg; 8],
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pub _xmm: [_libc_xmmreg; 16],
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__private: [u64; 12],
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}
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#[repr(C)]
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pub struct _libc_fpxreg {
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pub significand: [u16; 4],
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pub exponent: u16,
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__private: [u16; 3],
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}
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#[repr(C)]
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pub struct _libc_xmmreg {
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pub element: [u32; 4],
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}
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#[repr(C)]
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pub struct mcontext {
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pub gregs: [i64; 23], // TODO: greg_t?
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pub fpregs: *mut _libc_fpstate,
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__private: [u64; 8],
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}
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