kernel/arch/i386/include/arch_proto.h

   1
   2 #ifndef _I386_PROTO_H
   3 #define _I386_PROTO_H
   4
   5 #include <machine/vm.h>
   6
   7 #define K_STACK_SIZE    I386_PAGE_SIZE
   8
   9 #ifndef __ASSEMBLY__
  10
  11 /* Hardware interrupt handlers. */
  12 void hwint00(void);
  13 void hwint01(void);
  14 void hwint02(void);
  15 void hwint03(void);
  16 void hwint04(void);
  17 void hwint05(void);
  18 void hwint06(void);
  19 void hwint07(void);
  20 void hwint08(void);
  21 void hwint09(void);
  22 void hwint10(void);
  23 void hwint11(void);
  24 void hwint12(void);
  25 void hwint13(void);
  26 void hwint14(void);
  27 void hwint15(void);
  28
  29 /* Exception handlers (real or protected mode), in numerical order. */
  30 void int00(void), divide_error (void);
  31 void int01(void), single_step_exception (void);
  32 void int02(void), nmi (void);
  33 void int03(void), breakpoint_exception (void);
  34 void int04(void), overflow (void);
  35 void int05(void), bounds_check (void);
  36 void int06(void), inval_opcode (void);
  37 void int07(void), copr_not_available (void);
  38 void double_fault(void);
  39 void copr_seg_overrun(void);
  40 void inval_tss(void);
  41 void segment_not_present(void);
  42 void stack_exception(void);
  43 void general_protection(void);
  44 void page_fault(void);
  45 void copr_error(void);
  46 void alignment_check(void);
  47 void machine_check(void);
  48 void simd_exception(void);
  49
  50 /* Software interrupt handlers, in numerical order. */
  51 void trp(void);
  52 void ipc_entry(void);
  53 void kernel_call_entry(void);
  54 void level0_call(void);
  55
  56 /* exception.c */
  57 struct exception_frame {
  58         reg_t   vector;         /* which interrupt vector was triggered */
  59         reg_t   errcode;        /* zero if no exception does not push err code */
  60         reg_t   eip;
  61         reg_t   cs;
  62         reg_t   eflags;
  63         reg_t   esp;            /* undefined if trap is nested */
  64         reg_t   ss;             /* undefined if trap is nested */
  65 };
  66
  67 void exception(struct exception_frame * frame);
  68
  69 /* klib386.s */
  70 __dead void monitor(void);
  71 __dead void reset(void);
  72 __dead void x86_triplefault(void);
  73 reg_t read_cr0(void);
  74 reg_t read_cr2(void);
  75 void write_cr0(unsigned long value);
  76 unsigned long read_cr4(void);
  77 void write_cr4(unsigned long value);
  78 void write_cr3(unsigned long value);
  79 unsigned long read_cpu_flags(void);
  80 phys_bytes vir2phys(void *);
  81 void phys_insb(u16_t port, phys_bytes buf, size_t count);
  82 void phys_insw(u16_t port, phys_bytes buf, size_t count);
  83 void phys_outsb(u16_t port, phys_bytes buf, size_t count);
  84 void phys_outsw(u16_t port, phys_bytes buf, size_t count);
  85 u32_t read_cr3(void);
  86 void reload_cr3(void);
  87 void i386_invlpg(phys_bytes linaddr);
  88 vir_bytes phys_memset(phys_bytes ph, u32_t c, phys_bytes bytes);
  89 void reload_ds(void);
  90 void ia32_msr_read(u32_t reg, u32_t * hi, u32_t * lo);
  91 void ia32_msr_write(u32_t reg, u32_t hi, u32_t lo);
  92 void fninit(void);
  93 void clts(void);
  94 void fxsave(void *);
  95 void fnsave(void *);
  96 int fxrstor(void *);
  97 int __fxrstor_end(void *);
  98 int frstor(void *);
  99 int __frstor_end(void *);
 100 int __frstor_failure(void *);
 101 unsigned short fnstsw(void);
 102 void fnstcw(unsigned short* cw);
 103 void x86_lgdt(void *);
 104 void x86_lldt(u32_t);
 105 void x86_ltr(u32_t);
 106 void x86_lidt(void *);
 107 void x86_load_kerncs(void);
 108 void x86_load_ds(u32_t);
 109 void x86_load_ss(u32_t);
 110 void x86_load_es(u32_t);
 111 void x86_load_fs(u32_t);
 112 void x86_load_gs(u32_t);
 113
 114
 115 void switch_k_stack(void * esp, void (* continuation)(void));
 116
 117 void __switch_address_space(struct proc * p, struct proc ** __ptproc);
 118 #define switch_address_space(proc)      \
 119         __switch_address_space(proc, get_cpulocal_var_ptr(ptproc))
 120
 121 void refresh_tlb(void);
 122
 123 /* multiboot.c */
 124 void multiboot_init(void);
 125
 126 /* protect.c */
 127 struct tss_s {
 128   reg_t backlink;
 129   reg_t sp0;                    /* stack pointer to use during interrupt */
 130   reg_t ss0;                    /*   "   segment  "  "    "        "     */
 131   reg_t sp1;
 132   reg_t ss1;
 133   reg_t sp2;
 134   reg_t ss2;
 135   reg_t cr3;
 136   reg_t ip;
 137   reg_t flags;
 138   reg_t ax;
 139   reg_t cx;
 140   reg_t dx;
 141   reg_t bx;
 142   reg_t sp;
 143   reg_t bp;
 144   reg_t si;
 145   reg_t di;
 146   reg_t es;
 147   reg_t cs;
 148   reg_t ss;
 149   reg_t ds;
 150   reg_t fs;
 151   reg_t gs;
 152   reg_t ldt;
 153   u16_t trap;
 154   u16_t iobase;
 155 /* u8_t iomap[0]; */
 156 } __attribute__((packed));
 157
 158 void enable_iop(struct proc *pp);
 159 u32_t read_cs(void);
 160 u32_t read_ds(void);
 161 u32_t read_ss(void);
 162
 163 void add_memmap(kinfo_t *cbi, u64_t addr, u64_t len);
 164 phys_bytes alloc_lowest(kinfo_t *cbi, phys_bytes len);
 165 void vm_enable_paging(void);
 166 void cut_memmap(kinfo_t *cbi, phys_bytes start, phys_bytes end);
 167 phys_bytes pg_roundup(phys_bytes b);
 168 void pg_info(reg_t *, u32_t **);
 169 void pg_clear(void);
 170 void pg_identity(kinfo_t *);
 171 phys_bytes pg_load(void);
 172 void pg_map(phys_bytes phys, vir_bytes vaddr, vir_bytes vaddr_end, kinfo_t *cbi);
 173 int pg_mapkernel(void);
 174 void pg_mapproc(struct proc *p, struct boot_image *ip, kinfo_t *cbi);
 175
 176 /* prototype of an interrupt vector table entry */
 177 struct gate_table_s {
 178  void(*gate) (void);
 179         unsigned char vec_nr;
 180         unsigned char privilege;
 181 };
 182
 183 /* copies an array of vectors to the IDT. The last vector must be zero filled */
 184 void idt_copy_vectors(struct gate_table_s * first);
 185 void idt_copy_vectors_pic(void);
 186 void idt_reload(void);
 187
 188 EXTERN void * k_stacks_start;
 189 extern void * k_stacks;
 190
 191 #define get_k_stack_top(cpu)    ((void *)(((char*)(k_stacks)) \
 192                                         + 2 * ((cpu) + 1) * K_STACK_SIZE))
 193
 194 void mfence(void);
 195 #define barrier()       do { mfence(); } while(0)
 196
 197
 198 #ifndef __GNUC__
 199 /* call a function to read the stack fram pointer (%ebp) */
 200 reg_t read_ebp(void);
 201 #define get_stack_frame(__X)    ((reg_t)read_ebp())
 202 #else
 203 /* read %ebp directly */
 204 #define get_stack_frame(__X)    ((reg_t)__builtin_frame_address(0))
 205 #endif
 206
 207 /*
 208  * sets up TSS for a cpu and assigns kernel stack and cpu id
 209  */
 210 int tss_init(unsigned cpu, void * kernel_stack);
 211
 212 void int_gate_idt(unsigned vec_nr, vir_bytes offset, unsigned dpl_type);
 213
 214 void __copy_msg_from_user_end(void);
 215 void __copy_msg_to_user_end(void);
 216 void __user_copy_msg_pointer_failure(void);
 217
 218 int platform_tbl_checksum_ok(void *ptr, unsigned int length);
 219 int platform_tbl_ptr(phys_bytes start, phys_bytes end, unsigned
 220         increment, void * buff, unsigned size, phys_bytes * phys_addr, int ((*
 221         cmp_f)(void *)));
 222
 223 /* breakpoints.c */
 224 int breakpoint_set(phys_bytes linaddr, int bp, const int flags);
 225 #define BREAKPOINT_COUNT                4
 226 #define BREAKPOINT_FLAG_RW_MASK         (3 << 0)
 227 #define BREAKPOINT_FLAG_RW_EXEC         (0 << 0)
 228 #define BREAKPOINT_FLAG_RW_WRITE        (1 << 0)
 229 #define BREAKPOINT_FLAG_RW_RW           (2 << 0)
 230 #define BREAKPOINT_FLAG_LEN_MASK        (3 << 2)
 231 #define BREAKPOINT_FLAG_LEN_1           (0 << 2)
 232 #define BREAKPOINT_FLAG_LEN_2           (1 << 2)
 233 #define BREAKPOINT_FLAG_LEN_4           (2 << 2)
 234 #define BREAKPOINT_FLAG_MODE_MASK       (3 << 4)
 235 #define BREAKPOINT_FLAG_MODE_OFF        (0 << 4)
 236 #define BREAKPOINT_FLAG_MODE_LOCAL      (1 << 4)
 237 #define BREAKPOINT_FLAG_MODE_GLOBAL     (2 << 4)
 238
 239 /* functions defined in architecture-independent kernel source. */
 240 #include "kernel/proto.h"
 241
 242 #endif /* __ASSEMBLY__ */
 243
 244 #endif