arch/x86_64-pc/kernel/kernel_cpu.h

   1 /* CPU-specific definitions for x86-64 */
   2
   3 #ifndef KERNEL_CPU_H_
   4 #define KERNEL_CPU_H_
   5
   6 #include <aros/x86_64/cpucontext.h>
   7
   8 #include "segments.h"
   9
  10 /*
  11  * We handle all 255 exception vectors. However vectors starting from 0x20
  12  * are hardware IRQs which are handled separately. So - 32 raw exceptions.
  13  */
  14 #define EXCEPTIONS_COUNT 32
  15
  16 /* We use native context format, no conversion needed */
  17 #define regs_t struct ExceptionContext
  18 /* There are no private add-ons */
  19 #define AROSCPUContext ExceptionContext
  20
  21 /* We have no VBlank emulation */
  22 #define NO_VBLANK_EMU
  23
  24 /* User/supervisor mode switching */
  25 #define cpumode_t __unused char
  26
  27 #define goSuper() 0
  28 #define goUser()
  29 #define goBack(mode)
  30
  31 /* A command to issue a syscall */
  32 #define krnSysCall(num) asm volatile("int $0x80"::"a"(num):"memory")
  33
  34 #define IN_USER_MODE                                            \
  35 ({                                                              \
  36     short __value;                                              \
  37     __asm__ __volatile__ ("mov %%cs,%%ax":"=a"(__value));       \
  38     (__value & 0x03);                                           \
  39 })
  40
  41 #define PRINT_CPUCONTEXT(regs)                                                                                  \
  42     bug("[Kernel] Flags=0x%08X\n", regs->Flags);                                                                \
  43     bug("[Kernel] stack=%04x:%012x rflags=%016x ip=%04x:%012x ds=0x%04X\n",                                     \
  44                  regs->ss, regs->rsp, regs->rflags, regs->cs, regs->rip, regs->ds);                             \
  45     bug("[Kernel] rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx\n", regs->rax, regs->rbx, regs->rcx, regs->rdx);  \
  46     bug("[Kernel] rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n", regs->rsi, regs->rdi, regs->rbp, regs->rsp);  \
  47     bug("[Kernel] r08=%016lx r09=%016lx r10=%016lx r11=%016lx\n", regs->r8, regs->r9, regs->r10, regs->r11);    \
  48     bug("[Kernel] r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n", regs->r12, regs->r13, regs->r14, regs->r15);
  49
  50 #define SP(regs) regs->rsp
  51
  52 #endif