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Annotation of sys/arch/hppa64/include/db_machdep.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: db_machdep.h,v 1.1 2005/04/01 10:40:48 mickey Exp $   */
                      2:
                      3: /*
                      4:  * Copyright (c) 2005 Michael Shalayeff
                      5:  * All rights reserved.
                      6:  *
                      7:  * Permission to use, copy, modify, and distribute this software for any
                      8:  * purpose with or without fee is hereby granted, provided that the above
                      9:  * copyright notice and this permission notice appear in all copies.
                     10:  *
                     11:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     12:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     13:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     14:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     15:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
                     16:  * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
                     17:  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     18:  */
                     19:
                     20: #ifndef        _MACHINE_DB_MACHDEP_H_
                     21: #define        _MACHINE_DB_MACHDEP_H_
                     22:
                     23: #include <uvm/uvm_extern.h>
                     24:
                     25: #define        DB_ELF_SYMBOLS
                     26: #define        DB_ELFSIZE      64
                     27:
                     28: /* types the generic ddb module needs */
                     29: typedef        vaddr_t db_addr_t;
                     30: typedef        long db_expr_t;
                     31:
                     32: typedef struct trapframe db_regs_t;
                     33: extern db_regs_t       ddb_regs;
                     34: #define        DDB_REGS        (&ddb_regs)
                     35:
                     36: #define        PC_REGS(regs)   ((db_addr_t)(regs)->tf_iioq[0])
                     37: #define        SET_PC_REGS(r,pc) ((r)->tf_iioq[0] = (pc), (r)->tf_iioq[1] = (pc) + 4)
                     38:
                     39: /* Breakpoint related definitions */
                     40: #define        BKPT_INST       0x00010000      /* break 0,8 */
                     41: #define        BKPT_SIZE       sizeof(int)
                     42: #define        BKPT_SET(inst)  BKPT_INST
                     43:
                     44: #define        IS_BREAKPOINT_TRAP(type, code) ((type) == T_IBREAK)
                     45: #define        IS_WATCHPOINT_TRAP(type, code) ((type) == T_DBREAK)
                     46:
                     47: #define        FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_iioq[0] -= sizeof(int))
                     48:
                     49: #define DB_VALID_BREAKPOINT(addr) db_valid_breakpoint(addr)
                     50:
                     51: /* TODO 64bit insns */
                     52:
                     53: static __inline int inst_call(u_int ins) {
                     54:        return (ins & 0xfc00e000) == 0xe8000000 ||
                     55:               (ins & 0xfc00e000) == 0xe8004000 ||
                     56:               (ins & 0xfc000000) == 0xe4000000;
                     57: }
                     58: static __inline int inst_branch(u_int ins) {
                     59:        return (ins & 0xf0000000) == 0xe0000000 ||
                     60:               (ins & 0xf0000000) == 0xc0000000 ||
                     61:               (ins & 0xf0000000) == 0xa0000000 ||
                     62:               (ins & 0xf0000000) == 0x80000000;
                     63: }
                     64: static __inline int inst_load(u_int ins) {
                     65:        return (ins & 0xf0000000) == 0x40000000 ||
                     66:               (ins & 0xf4000200) == 0x24000000 ||
                     67:               (ins & 0xfc000200) == 0x0c000000 ||
                     68:               (ins & 0xfc001fc0) != 0x0c0011c0;
                     69: }
                     70: static __inline int inst_store(u_int ins) {
                     71:        return (ins & 0xf0000000) == 0x60000000 ||      /* st */
                     72:               (ins & 0xf4000200) == 0x24000200 ||      /* fst/cst */
                     73:               (ins & 0xfc000200) == 0x0c000200 ||      /* stby */
                     74:               (ins & 0xfc0003c0) == 0x0c0001c0;        /* ldcw */
                     75: }
                     76: static __inline int inst_return(u_int ins) {
                     77:        return (ins & 0xfc00e000) == 0xe800c000 ||
                     78:               (ins & 0xfc000000) == 0xe0000000;
                     79: }
                     80: static __inline int inst_trap_return(u_int ins)        {
                     81:        return (ins & 0xfc001fc0) == 0x00000ca0;
                     82: }
                     83:
                     84: #if 0
                     85: #define db_clear_single_step(r)        ((r)->tf_flags &= ~(PSL_Z))
                     86: #define db_set_single_step(r)  ((r)->tf_flags |= (PSL_Z))
                     87: #else
                     88: #define        SOFTWARE_SSTEP          1
                     89: #define        SOFTWARE_SSTEP_EMUL     1
                     90:
                     91: static __inline db_addr_t
                     92: next_instr_address(db_addr_t addr, int b) {
                     93:        return (addr + 4);
                     94: }
                     95:
                     96: #define        branch_taken(ins,pc,f,regs)     branch_taken1(ins, pc, regs)
                     97: static __inline db_addr_t
                     98: branch_taken1(int ins, db_addr_t pc, db_regs_t *regs) {
                     99:        return (pc);
                    100: }
                    101:
                    102: #endif
                    103:
                    104: int db_valid_breakpoint(db_addr_t);
                    105: int kdb_trap(int, int, db_regs_t *);
                    106:
                    107: #endif /* _MACHINE_DB_MACHDEP_H_ */