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yaml
---
r: 68298
b: refs/heads/master
c: a90f354
h: refs/heads/master
v: v3
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Paul Mundt committed Oct 3, 2007
1 parent 58edcb8 commit 31c1624
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Showing 3 changed files with 6 additions and 53 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: e1fb4552ac938f2f70e9df2169b681594752bd85
refs/heads/master: a90f354709b372c8dcabe3cd6315a83da5927573
45 changes: 3 additions & 42 deletions trunk/arch/sh/kernel/kgdb_stub.c
Original file line number Diff line number Diff line change
Expand Up @@ -150,13 +150,6 @@ struct kgdb_regs trap_registers;
char kgdb_in_gdb_mode;
char in_nmi; /* Set during NMI to prevent reentry */
int kgdb_nofault; /* Boolean to ignore bus errs (i.e. in GDB) */
int kgdb_enabled = 1; /* Default to enabled, cmdline can disable */

/* Exposed for user access */
struct task_struct *kgdb_current;
unsigned int kgdb_g_imask;
int kgdb_trapa_val;
int kgdb_excode;

/* Default values for SCI (can override via kernel args in setup.c) */
#ifndef CONFIG_KGDB_DEFPORT
Expand Down Expand Up @@ -640,7 +633,6 @@ static void do_single_step(void)

/* Flush and return */
kgdb_flush_icache_range((long) addr, (long) addr + 2);
return;
}

/* Undo a single step */
Expand Down Expand Up @@ -815,14 +807,10 @@ static void set_regs_msg(void)
/*
* Bring up the ports..
*/
static int kgdb_serial_setup(void)
static int __init kgdb_serial_setup(void)
{
extern int kgdb_console_setup(struct console *co, char *options);
struct console dummy;

kgdb_console_setup(&dummy, 0);

return 0;
return kgdb_console_setup(&dummy, 0);
}
#else
#define kgdb_serial_setup() 0
Expand All @@ -833,22 +821,6 @@ static void kgdb_command_loop(const int excep_code, const int trapa_value)
{
int sigval;

if (excep_code == NMI_VEC) {
#ifndef CONFIG_KGDB_NMI
printk(KERN_NOTICE "KGDB: Ignoring unexpected NMI?\n");
return;
#else /* CONFIG_KGDB_NMI */
if (!kgdb_enabled) {
kgdb_enabled = 1;
kgdb_init();
}
#endif /* CONFIG_KGDB_NMI */
}

/* Ignore if we're disabled */
if (!kgdb_enabled)
return;

/* Enter GDB mode (e.g. after detach) */
if (!kgdb_in_gdb_mode) {
/* Do serial setup, notify user, issue preemptive ack */
Expand Down Expand Up @@ -959,18 +931,10 @@ static void handle_exception(struct pt_regs *regs)

/* Get excode for command loop call, user access */
asm("stc r2_bank, %0":"=r"(excep_code));
kgdb_excode = excep_code;

/* Other interesting environment items for reference */
asm("stc r6_bank, %0":"=r"(kgdb_g_imask));
kgdb_current = current;
kgdb_trapa_val = trapa_value;

/* Act on the exception */
kgdb_command_loop(excep_code, trapa_value);

kgdb_current = NULL;

/* Copy back the (maybe modified) registers */
for (count = 0; count < 16; count++)
regs->regs[count] = trap_registers.regs[count];
Expand All @@ -994,11 +958,8 @@ asmlinkage void kgdb_handle_exception(unsigned long r4, unsigned long r5,
}

/* Initialise the KGDB data structures and serial configuration */
int kgdb_init(void)
int __init kgdb_init(void)
{
if (!kgdb_enabled)
return 1;

in_nmi = 0;
kgdb_nofault = 0;
stepped_opcode = 0;
Expand Down
12 changes: 2 additions & 10 deletions trunk/include/asm-sh/kgdb.h
Original file line number Diff line number Diff line change
Expand Up @@ -19,8 +19,6 @@
#include <asm/ptrace.h>
#include <asm/cacheflush.h>

struct console;

/* Same as pt_regs but has vbr in place of syscall_nr */
struct kgdb_regs {
unsigned long regs[16];
Expand All @@ -35,10 +33,7 @@ struct kgdb_regs {

/* State info */
extern char kgdb_in_gdb_mode;
extern int kgdb_done_init;
extern int kgdb_enabled;
extern int kgdb_nofault; /* Ignore bus errors (in gdb mem access) */
extern int kgdb_halt; /* Execute initial breakpoint at startup */
extern char in_nmi; /* Debounce flag to prevent NMI reentry*/

/* SCI */
Expand All @@ -59,6 +54,7 @@ extern kgdb_debug_hook_t *kgdb_debug_hook;
extern kgdb_bus_error_hook_t *kgdb_bus_err_hook;

/* Console */
struct console;
void kgdb_console_write(struct console *co, const char *s, unsigned count);
extern int kgdb_console_setup(struct console *, char *);

Expand All @@ -69,11 +65,7 @@ extern void longjmp(jmp_buf __jmpb, int __retval);
extern int setjmp(jmp_buf __jmpb);

/* Forced breakpoint */
#define breakpoint() \
do { \
if (kgdb_enabled) \
__asm__ __volatile__("trapa #0x3c"); \
} while (0)
#define breakpoint() __asm__ __volatile__("trapa #0x3c")

/* KGDB should be able to flush all kernel text space */
#if defined(CONFIG_CPU_SH4)
Expand Down

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