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110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
#ifndef COSMOPOLITAN_LIBC_CALLS_UCONTEXT_H_
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#define COSMOPOLITAN_LIBC_CALLS_UCONTEXT_H_
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#include "libc/calls/struct/sigaltstack.h"
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#include "libc/calls/struct/sigset.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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#ifdef __x86_64__
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struct XmmRegister {
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uint64_t u64[2];
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};
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struct FpuStackEntry {
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uint16_t significand[4];
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uint16_t exponent;
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uint16_t padding[3];
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};
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struct thatispacked FpuState {
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uint16_t cwd;
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uint16_t swd;
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uint16_t ftw;
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uint16_t fop;
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uint64_t rip;
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uint64_t rdp;
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uint32_t mxcsr;
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uint32_t mxcr_mask;
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struct FpuStackEntry st[8];
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struct XmmRegister xmm[16];
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uint32_t __padding[24];
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};
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typedef uint64_t greg_t;
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typedef greg_t gregset_t[23];
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typedef struct FpuState *fpregset_t;
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#endif /* __x86_64__ */
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struct sigcontext {
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#ifdef __x86_64__
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union {
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struct {
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uint64_t r8;
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uint64_t r9;
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uint64_t r10;
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uint64_t r11;
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uint64_t r12;
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uint64_t r13;
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uint64_t r14;
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uint64_t r15;
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uint64_t rdi;
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uint64_t rsi;
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uint64_t rbp;
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uint64_t rbx;
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uint64_t rdx;
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uint64_t rax;
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uint64_t rcx;
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uint64_t rsp;
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uint64_t rip;
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uint64_t eflags;
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uint16_t cs;
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uint16_t gs;
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uint16_t fs;
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uint16_t __pad0;
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uint64_t err;
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uint64_t trapno;
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uint64_t oldmask;
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uint64_t cr2;
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};
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gregset_t gregs;
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};
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struct FpuState *fpregs; /* zero when no fpu context */
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uint64_t __pad1[8];
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#elif defined(__aarch64__)
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uint64_t fault_address;
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uint64_t regs[31];
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uint64_t sp;
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uint64_t pc;
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uint64_t pstate;
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uint8_t __reserved[4096] __attribute__((__aligned__(16)));
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#endif /* __x86_64__ */
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};
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typedef struct sigcontext mcontext_t;
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struct ucontext {
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uint64_t uc_flags; /* don't use this */
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struct ucontext *uc_link;
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stack_t uc_stack;
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#ifdef __x86_64__
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struct sigcontext uc_mcontext;
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sigset_t uc_sigmask;
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uint64_t __pad;
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struct FpuState __fpustate; /* for cosmo on non-linux */
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#elif defined(__aarch64__)
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sigset_t uc_sigmask;
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uint8_t __unused[1024 / 8 - sizeof(sigset_t)];
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struct sigcontext uc_mcontext;
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#endif
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};
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typedef struct ucontext ucontext_t;
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int getcontext(ucontext_t *);
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int setcontext(const ucontext_t *);
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_CALLS_UCONTEXT_H_ */
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