1 #ifndef GDBMACH_H
2 #define GDBMACH_H
3
4 /** @file
5 *
6 * GDB architecture specifics
7 *
8 * This file declares functions for manipulating the machine state and
9 * debugging context.
10 *
11 */
12
13 #include <stdint.h>
14
15 typedef unsigned long gdbreg_t;
16
17 /* The register snapshot, this must be in sync with interrupt handler and the
18 * GDB protocol. */
19 enum {
20 GDBMACH_EAX,
21 GDBMACH_ECX,
22 GDBMACH_EDX,
23 GDBMACH_EBX,
24 GDBMACH_ESP,
25 GDBMACH_EBP,
26 GDBMACH_ESI,
27 GDBMACH_EDI,
28 GDBMACH_EIP,
29 GDBMACH_EFLAGS,
30 GDBMACH_CS,
31 GDBMACH_SS,
32 GDBMACH_DS,
33 GDBMACH_ES,
34 GDBMACH_FS,
35 GDBMACH_GS,
36 GDBMACH_NREGS,
37 GDBMACH_SIZEOF_REGS = GDBMACH_NREGS * sizeof ( gdbreg_t )
38 };
39
40 /* Breakpoint types */
41 enum {
42 GDBMACH_BPMEM,
43 GDBMACH_BPHW,
44 GDBMACH_WATCH,
45 GDBMACH_RWATCH,
46 GDBMACH_AWATCH,
47 };
48
gdbmach_set_pc(gdbreg_t * regs,gdbreg_t pc)49 static inline void gdbmach_set_pc ( gdbreg_t *regs, gdbreg_t pc ) {
50 regs [ GDBMACH_EIP ] = pc;
51 }
52
gdbmach_set_single_step(gdbreg_t * regs,int step)53 static inline void gdbmach_set_single_step ( gdbreg_t *regs, int step ) {
54 regs [ GDBMACH_EFLAGS ] &= ~( 1 << 8 ); /* Trace Flag (TF) */
55 regs [ GDBMACH_EFLAGS ] |= ( step << 8 );
56 }
57
gdbmach_breakpoint(void)58 static inline void gdbmach_breakpoint ( void ) {
59 __asm__ __volatile__ ( "int $3\n" );
60 }
61
62 extern int gdbmach_set_breakpoint ( int type, unsigned long addr, size_t len, int enable );
63
64 #endif /* GDBMACH_H */
65