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kgdb,kdb: individual register set and and get API

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The kdb shell specification includes the ability to get and set
architecture specific registers by name.

For the time being individual register get and set will be implemented
on a per architecture basis.  If an architecture defines
DBG_MAX_REG_NUM > 0 then kdb and the gdbstub will use the capability
for individually getting and setting architecture specific registers.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
This commit is contained in:
Jason Wessel 2010-08-05 09:22:20 -05:00
parent 84a0bd5b28
commit 534af10823
3 changed files with 159 additions and 12 deletions
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26
kernel/debug/gdbstub.c
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@ -328,6 +328,32 @@ static int kgdb_ebin2mem(char *buf, char *mem, int count)
return probe_kernel_write(mem, c, size);
}
#if DBG_MAX_REG_NUM > 0
void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
{
int i;
int idx = 0;
char *ptr = (char *)gdb_regs;
for (i = 0; i < DBG_MAX_REG_NUM; i++) {
dbg_get_reg(i, ptr + idx, regs);
idx += dbg_reg_def[i].size;
}
}
void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs)
{
int i;
int idx = 0;
char *ptr = (char *)gdb_regs;
for (i = 0; i < DBG_MAX_REG_NUM; i++) {
dbg_set_reg(i, ptr + idx, regs);
idx += dbg_reg_def[i].size;
}
}
#endif /* DBG_MAX_REG_NUM > 0 */
/* Write memory due to an 'M' or 'X' packet. */
static int write_mem_msg(int binary)
{