mirror of
https://github.com/Mathewnd/Astral.git
synced 2026-10-27 12:48:22 +00:00
Matheus
141 lines
4.7 KiB
C
141 lines
4.7 KiB
C
#ifndef _ARCH_SIGNAL_H
|
|
#define _ARCH_SIGNAL_H
|
|
|
|
#include <kernel/signal.h>
|
|
|
|
#define ARCH_SIGNAL_STACK_GROWS_DOWNWARDS 1
|
|
#define ARCH_SIGNAL_REDZONE_SIZE 128
|
|
#define ARCH_SIGNAL_SYSCALL_INSTRUCTION_SIZE 2
|
|
|
|
#define ARCH_SIGNAL_GETFROMRETURN(x)
|
|
|
|
#define MCONTEXT_REG_R8 0
|
|
#define MCONTEXT_REG_R9 1
|
|
#define MCONTEXT_REG_R10 2
|
|
#define MCONTEXT_REG_R11 3
|
|
#define MCONTEXT_REG_R12 4
|
|
#define MCONTEXT_REG_R13 5
|
|
#define MCONTEXT_REG_R14 6
|
|
#define MCONTEXT_REG_R15 7
|
|
#define MCONTEXT_REG_RDI 8
|
|
#define MCONTEXT_REG_RSI 9
|
|
#define MCONTEXT_REG_RBP 10
|
|
#define MCONTEXT_REG_RBX 11
|
|
#define MCONTEXT_REG_RDX 12
|
|
#define MCONTEXT_REG_RAX 13
|
|
#define MCONTEXT_REG_RCX 14
|
|
#define MCONTEXT_REG_RSP 15
|
|
#define MCONTEXT_REG_RIP 16
|
|
#define MCONTEXT_REG_EFL 17
|
|
#define MCONTEXT_REG_CSGSFS 18
|
|
#define MCONTEXT_REG_ERR 19
|
|
#define MCONTEXT_REG_TRAPNO 20
|
|
#define MCONTEXT_REG_OLDMASK 21
|
|
#define MCONTEXT_REG_CR2 22
|
|
#define MCONTEXT_NGREG 23
|
|
|
|
typedef struct {
|
|
unsigned long gregs[MCONTEXT_NGREG];
|
|
uint8_t *fpu_state_p;
|
|
unsigned long __reserved1[8];
|
|
} mcontext_t;
|
|
|
|
// this structure should have a part of it matching the ucontext from the abi
|
|
// which then gets its address returned by the ARCH_SIGFRAME_GET_UCONTEXT_POINTER macro
|
|
typedef struct {
|
|
void *restorer; // for return from signal
|
|
|
|
// ucontext starts here
|
|
unsigned long uc_flags; // can be zero
|
|
void *uc_link; // unused for signals
|
|
stack_t oldstack;
|
|
mcontext_t mcontext;
|
|
sigset_t oldmask;
|
|
|
|
// astral bits
|
|
context_t context;
|
|
extracontext_t extracontext;
|
|
siginfo_t siginfo;
|
|
uint8_t xsave[];
|
|
} sigframe_t;
|
|
|
|
#define ARCH_SIGFRAME_GET_UCONTEXT_POINTER(x) (&(x)->uc_flags)
|
|
#define ARCH_SIGFRAME_SIZE (sizeof(sigframe_t) + arch_xsave_size)
|
|
|
|
static inline void arch_sigframe_init(sigframe_t *sigframe) {
|
|
sigframe->extracontext.xsave = sigframe->xsave;
|
|
}
|
|
|
|
#define CS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 0))
|
|
#define GS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 1))
|
|
#define FS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 2))
|
|
#define SS_sig(context) (*((WORD *)&(context)->uc_mcontext.gregs[REG_CSGSFS] + 3))
|
|
|
|
|
|
static inline void arch_sigframe_prepare_mcontext(void *stack, sigframe_t *sigframe) {
|
|
context_t *context = &sigframe->context;
|
|
extracontext_t *extracontext = &sigframe->extracontext;
|
|
unsigned long *gregs = sigframe->mcontext.gregs;
|
|
|
|
gregs[MCONTEXT_REG_R8] = context->r8;
|
|
gregs[MCONTEXT_REG_R9] = context->r9;
|
|
gregs[MCONTEXT_REG_R10] = context->r10;
|
|
gregs[MCONTEXT_REG_R11] = context->r11;
|
|
gregs[MCONTEXT_REG_R12] = context->r12;
|
|
gregs[MCONTEXT_REG_R13] = context->r13;
|
|
gregs[MCONTEXT_REG_R14] = context->r14;
|
|
gregs[MCONTEXT_REG_R15] = context->r15;
|
|
gregs[MCONTEXT_REG_RDI] = context->rdi;
|
|
gregs[MCONTEXT_REG_RSI] = context->rsi;
|
|
gregs[MCONTEXT_REG_RBP] = context->rbp;
|
|
gregs[MCONTEXT_REG_RBX] = context->rbx;
|
|
gregs[MCONTEXT_REG_RDX] = context->rdx;
|
|
gregs[MCONTEXT_REG_RAX] = context->rax;
|
|
gregs[MCONTEXT_REG_RCX] = context->rcx;
|
|
gregs[MCONTEXT_REG_RSP] = context->rsp;
|
|
gregs[MCONTEXT_REG_RIP] = context->rip;
|
|
gregs[MCONTEXT_REG_EFL] = context->rflags;
|
|
gregs[MCONTEXT_REG_CSGSFS] = (uint64_t)context->cs | ((uint64_t)context->gs << 16) | ((uint64_t)context->fs << 32) | ((uint64_t)context->ss << 48);
|
|
gregs[MCONTEXT_REG_ERR] = context->error;
|
|
gregs[MCONTEXT_REG_TRAPNO] = context->irq;
|
|
gregs[MCONTEXT_REG_OLDMASK] = 0;
|
|
gregs[MCONTEXT_REG_CR2] = context->cr2;
|
|
|
|
extracontext->xsave = ((sigframe_t *)stack)->xsave;
|
|
sigframe->mcontext.fpu_state_p = extracontext->xsave;
|
|
}
|
|
|
|
static inline void arch_sigframe_get_context_from_mcontext(sigframe_t *sigframe) {
|
|
context_t *context = &sigframe->context;
|
|
extracontext_t *extracontext = &sigframe->extracontext;
|
|
unsigned long *gregs = sigframe->mcontext.gregs;
|
|
|
|
context->r8 = gregs[MCONTEXT_REG_R8];
|
|
context->r9 = gregs[MCONTEXT_REG_R9];
|
|
context->r10 = gregs[MCONTEXT_REG_R10];
|
|
context->r11 = gregs[MCONTEXT_REG_R11];
|
|
context->r12 = gregs[MCONTEXT_REG_R12];
|
|
context->r13 = gregs[MCONTEXT_REG_R13];
|
|
context->r14 = gregs[MCONTEXT_REG_R14];
|
|
context->r15 = gregs[MCONTEXT_REG_R15];
|
|
context->rdi = gregs[MCONTEXT_REG_RDI];
|
|
context->rsi = gregs[MCONTEXT_REG_RSI];
|
|
context->rbp = gregs[MCONTEXT_REG_RBP];
|
|
context->rbx = gregs[MCONTEXT_REG_RBX];
|
|
context->rdx = gregs[MCONTEXT_REG_RDX];
|
|
context->rax = gregs[MCONTEXT_REG_RAX];
|
|
context->rcx = gregs[MCONTEXT_REG_RCX];
|
|
context->rsp = gregs[MCONTEXT_REG_RSP];
|
|
context->rip = gregs[MCONTEXT_REG_RIP];
|
|
context->rflags = gregs[MCONTEXT_REG_EFL];
|
|
context->error = gregs[MCONTEXT_REG_ERR];
|
|
context->cr2 = gregs[MCONTEXT_REG_CR2];
|
|
context->cs = gregs[MCONTEXT_REG_CSGSFS] & 0xffff;
|
|
context->gs = (gregs[MCONTEXT_REG_CSGSFS] >> 16) & 0xffff;
|
|
context->fs = (gregs[MCONTEXT_REG_CSGSFS] >> 32) & 0xffff;
|
|
context->ss = (gregs[MCONTEXT_REG_CSGSFS] >> 48) & 0xffff;
|
|
}
|
|
|
|
|
|
#endif
|