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 // STUB: don't expect this to work!
21 GDBMACH_EIP,
22 GDBMACH_EFLAGS,
23 GDBMACH_NREGS,
24 GDBMACH_SIZEOF_REGS = GDBMACH_NREGS * sizeof ( gdbreg_t )
25 };
26
27 /* Breakpoint types */
28 enum {
29 GDBMACH_BPMEM,
30 GDBMACH_BPHW,
31 GDBMACH_WATCH,
32 GDBMACH_RWATCH,
33 GDBMACH_AWATCH,
34 };
35
gdbmach_set_pc(gdbreg_t * regs,gdbreg_t pc)36 static inline void gdbmach_set_pc ( gdbreg_t *regs, gdbreg_t pc ) {
37 regs [ GDBMACH_EIP ] = pc;
38 }
39
gdbmach_set_single_step(gdbreg_t * regs,int step)40 static inline void gdbmach_set_single_step ( gdbreg_t *regs, int step ) {
41 regs [ GDBMACH_EFLAGS ] &= ~( 1 << 8 ); /* Trace Flag (TF) */
42 regs [ GDBMACH_EFLAGS ] |= ( step << 8 );
43 }
44
gdbmach_breakpoint(void)45 static inline void gdbmach_breakpoint ( void ) {
46 __asm__ __volatile__ ( "int $3\n" );
47 }
48
49 extern int gdbmach_set_breakpoint ( int type, unsigned long addr, size_t len, int enable );
50
51 #endif /* GDBMACH_H */
52