769af57274
. new mode for sys_memset: include process so memset can be done in physical or virtual address space. . add a mode to mmap() that lets a process allocate uninitialized memory. . this allows an exec()er (RS, VFS, etc.) to request uninitialized memory from VM and selectively clear the ranges that don't come from a file, leaving no uninitialized memory left for the process to see. . use callbacks for clearing the process, clearing memory in the process, and copying into the process; so that the libexec code can be used from rs, vfs, and in the future, kernel (to load vm) and vm (to load boot-time processes)
233 lines
6 KiB
C
233 lines
6 KiB
C
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#ifndef _I386_PROTO_H
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#define _I386_PROTO_H
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#include <machine/vm.h>
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#define K_STACK_SIZE I386_PAGE_SIZE
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#ifndef __ASSEMBLY__
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/* Hardware interrupt handlers. */
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void hwint00(void);
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void hwint01(void);
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void hwint02(void);
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void hwint03(void);
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void hwint04(void);
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void hwint05(void);
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void hwint06(void);
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void hwint07(void);
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void hwint08(void);
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void hwint09(void);
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void hwint10(void);
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void hwint11(void);
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void hwint12(void);
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void hwint13(void);
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void hwint14(void);
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void hwint15(void);
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/* Exception handlers (real or protected mode), in numerical order. */
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void int00(void), divide_error (void);
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void int01(void), single_step_exception (void);
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void int02(void), nmi (void);
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void int03(void), breakpoint_exception (void);
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void int04(void), overflow (void);
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void int05(void), bounds_check (void);
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void int06(void), inval_opcode (void);
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void int07(void), copr_not_available (void);
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void double_fault(void);
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void copr_seg_overrun(void);
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void inval_tss(void);
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void segment_not_present(void);
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void stack_exception(void);
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void general_protection(void);
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void page_fault(void);
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void copr_error(void);
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void alignment_check(void);
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void machine_check(void);
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void simd_exception(void);
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/* Software interrupt handlers, in numerical order. */
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void trp(void);
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void ipc_entry(void);
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void kernel_call_entry(void);
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void level0_call(void);
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/* memory.c */
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void segmentation2paging(struct proc * current);
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void i386_freepde(int pde);
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void getcr3val(void);
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/* exception.c */
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struct exception_frame {
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reg_t vector; /* which interrupt vector was triggered */
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reg_t errcode; /* zero if no exception does not push err code */
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reg_t eip;
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reg_t cs;
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reg_t eflags;
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reg_t esp; /* undefined if trap is nested */
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reg_t ss; /* undefined if trap is nested */
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};
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void exception(struct exception_frame * frame);
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/* klib386.s */
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__dead void monitor(void);
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__dead void reset(void);
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__dead void x86_triplefault(void);
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reg_t read_cr0(void);
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reg_t read_cr2(void);
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void write_cr0(unsigned long value);
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unsigned long read_cr4(void);
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void write_cr4(unsigned long value);
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void write_cr3(unsigned long value);
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unsigned long read_cpu_flags(void);
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void phys_insb(u16_t port, phys_bytes buf, size_t count);
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void phys_insw(u16_t port, phys_bytes buf, size_t count);
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void phys_outsb(u16_t port, phys_bytes buf, size_t count);
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void phys_outsw(u16_t port, phys_bytes buf, size_t count);
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u32_t read_cr3(void);
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void reload_cr3(void);
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void i386_invlpg(phys_bytes linaddr);
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vir_bytes phys_memset(phys_bytes ph, u32_t c, phys_bytes bytes);
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void reload_ds(void);
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void ia32_msr_read(u32_t reg, u32_t * hi, u32_t * lo);
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void ia32_msr_write(u32_t reg, u32_t hi, u32_t lo);
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void fninit(void);
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void clts(void);
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void fxsave(void *);
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void fnsave(void *);
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int fxrstor(void *);
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int __fxrstor_end(void *);
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int frstor(void *);
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int __frstor_end(void *);
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int __frstor_failure(void *);
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unsigned short fnstsw(void);
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void fnstcw(unsigned short* cw);
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void switch_k_stack(void * esp, void (* continuation)(void));
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void __switch_address_space(struct proc * p, struct proc ** __ptproc);
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#define switch_address_space(proc) \
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__switch_address_space(proc, get_cpulocal_var_ptr(ptproc))
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void refresh_tlb(void);
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/* multiboot.c */
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void multiboot_init(void);
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/* protect.c */
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struct tss_s {
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reg_t backlink;
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reg_t sp0; /* stack pointer to use during interrupt */
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reg_t ss0; /* " segment " " " " */
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reg_t sp1;
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reg_t ss1;
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reg_t sp2;
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reg_t ss2;
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reg_t cr3;
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reg_t ip;
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reg_t flags;
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reg_t ax;
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reg_t cx;
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reg_t dx;
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reg_t bx;
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reg_t sp;
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reg_t bp;
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reg_t si;
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reg_t di;
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reg_t es;
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reg_t cs;
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reg_t ss;
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reg_t ds;
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reg_t fs;
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reg_t gs;
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reg_t ldt;
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u16_t trap;
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u16_t iobase;
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/* u8_t iomap[0]; */
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};
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void prot_init(void);
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void idt_init(void);
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void init_dataseg(struct segdesc_s *segdp, phys_bytes base, vir_bytes
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size, int privilege);
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void enable_iop(struct proc *pp);
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int prot_set_kern_seg_limit(vir_bytes limit);
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void printseg(char *banner, int iscs, struct proc *pr, u32_t selector);
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u32_t read_cs(void);
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u32_t read_ds(void);
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u32_t read_ss(void);
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/* prototype of an interrupt vector table entry */
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struct gate_table_s {
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void(*gate) (void);
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unsigned char vec_nr;
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unsigned char privilege;
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};
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extern struct gate_table_s gate_table_pic[];
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/* copies an array of vectors to the IDT. The last vector must be zero filled */
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void idt_copy_vectors(struct gate_table_s * first);
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void idt_reload(void);
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EXTERN void * k_boot_stktop;
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EXTERN void * k_stacks_start;
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extern void * k_stacks;
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#define get_k_stack_top(cpu) ((void *)(((char*)(k_stacks)) \
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+ 2 * ((cpu) + 1) * K_STACK_SIZE))
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void mfence(void);
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#define barrier() do { mfence(); } while(0)
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#ifndef __GNUC__
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/* call a function to read the stack fram pointer (%ebp) */
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reg_t read_ebp(void);
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#define get_stack_frame(__X) ((reg_t)read_ebp())
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#else
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/* read %ebp directly */
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#define get_stack_frame(__X) ((reg_t)__builtin_frame_address(0))
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#endif
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/*
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* sets up TSS for a cpu and assigns kernel stack and cpu id
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*/
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void tss_init(unsigned cpu, void * kernel_stack);
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void int_gate(unsigned vec_nr, vir_bytes offset, unsigned dpl_type);
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void __copy_msg_from_user_end(void);
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void __copy_msg_to_user_end(void);
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void __user_copy_msg_pointer_failure(void);
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int platform_tbl_checksum_ok(void *ptr, unsigned int length);
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int platform_tbl_ptr(phys_bytes start, phys_bytes end, unsigned
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increment, void * buff, unsigned size, phys_bytes * phys_addr, int ((*
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cmp_f)(void *)));
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/* breakpoints.c */
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#define BREAKPOINT_COUNT 4
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#define BREAKPOINT_FLAG_RW_MASK (3 << 0)
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#define BREAKPOINT_FLAG_RW_EXEC (0 << 0)
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#define BREAKPOINT_FLAG_RW_WRITE (1 << 0)
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#define BREAKPOINT_FLAG_RW_RW (2 << 0)
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#define BREAKPOINT_FLAG_LEN_MASK (3 << 2)
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#define BREAKPOINT_FLAG_LEN_1 (0 << 2)
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#define BREAKPOINT_FLAG_LEN_2 (1 << 2)
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#define BREAKPOINT_FLAG_LEN_4 (2 << 2)
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#define BREAKPOINT_FLAG_MODE_MASK (3 << 4)
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#define BREAKPOINT_FLAG_MODE_OFF (0 << 4)
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#define BREAKPOINT_FLAG_MODE_LOCAL (1 << 4)
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#define BREAKPOINT_FLAG_MODE_GLOBAL (2 << 4)
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/* functions defined in architecture-independent kernel source. */
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#include "kernel/proto.h"
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#endif /* __ASSEMBLY__ */
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#endif
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