162 lines
3.6 KiB
C
162 lines
3.6 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/calls.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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#define REG_R8 REG_R8
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#define REG_R9 REG_R9
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#define REG_R10 REG_R10
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#define REG_R11 REG_R11
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#define REG_R12 REG_R12
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#define REG_R13 REG_R13
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#define REG_R14 REG_R14
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#define REG_R15 REG_R15
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#define REG_RDI REG_RDI
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#define REG_RSI REG_RSI
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#define REG_RBP REG_RBP
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#define REG_RBX REG_RBX
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#define REG_RDX REG_RDX
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#define REG_RAX REG_RAX
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#define REG_RCX REG_RCX
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#define REG_RSP REG_RSP
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#define REG_RIP REG_RIP
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#define REG_EFL REG_EFL
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#define REG_CSGSFS REG_CSGSFS
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#define REG_ERR REG_ERR
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#define REG_TRAPNO REG_TRAPNO
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#define REG_OLDMASK REG_OLDMASK
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#define REG_CR2 REG_CR2
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enum GeneralRegister {
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REG_R8,
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REG_R9,
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REG_R10,
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REG_R11,
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REG_R12,
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REG_R13,
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REG_R14,
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REG_R15,
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REG_RDI,
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REG_RSI,
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REG_RBP,
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REG_RBX,
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REG_RDX,
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REG_RAX,
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REG_RCX,
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REG_RSP,
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REG_RIP,
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REG_EFL,
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REG_CSGSFS,
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REG_ERR,
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REG_TRAPNO,
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REG_OLDMASK,
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REG_CR2
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};
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struct XmmRegister {
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uint64_t u64[2];
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};
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static_assert(sizeof(struct XmmRegister) == 16);
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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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static_assert(sizeof(struct FpuStackEntry) == 16);
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struct 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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struct MachineContext {
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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;
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uint64_t __pad1[8];
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};
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typedef struct MachineContext mcontext_t;
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struct ucontext {
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union {
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uint64_t uc_flags;
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struct {
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unsigned cf : 1; /* bit 0: carry flag */
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unsigned vf : 1; /* bit 1: V flag: was 8085 signed-number overflow */
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unsigned pf : 1; /* bit 2: parity flag */
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unsigned rf : 1; /* bit 3: always zero [undoc] */
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unsigned af : 1; /* bit 4: auxiliary flag */
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unsigned kf : 1; /* bit 5: K flag = V flag ⊕ sgn(result) [undoc] */
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unsigned zf : 1; /* bit 6: zero flag */
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unsigned sf : 1; /* bit 7: sign flag */
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unsigned tf : 1; /* bit 8: trap flag */
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unsigned if_ : 1; /* bit 9: interrupt enable flag */
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unsigned df : 1; /* bit 10: direction flag */
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unsigned of : 1; /* bit 11: overflow flag */
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unsigned pl : 2; /* b12-13: i/o privilege level (80286+) */
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unsigned nt : 1; /* bit 14: nested task flag (80286+) */
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unsigned pc : 1; /* bit 15: oldskool flag */
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};
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};
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struct ucontext *uc_link;
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stack_t uc_stack;
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mcontext_t uc_mcontext;
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uint8_t uc_sigmask[128 + 16]; /* ?!? wut */
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struct FpuState fpustate;
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};
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typedef struct ucontext 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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