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sh: kgdb section mismatches and tidying. 

The kgdb console setup was callable from a left-over deferred
initialization path, which in turn depends on __init symbols. Since
the deferred initialization was removed some time ago, kill off the
rest of those remnants and move kgdb_init() and friends to __init.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2007-10-03 17:13:34 +09:00
parent e1fb4552ac
commit a90f354709
2 changed files with 5 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
arch/sh/kernel/kgdb_stub.c
View File

@ -150,13 +150,6 @@ struct kgdb_regs trap_registers;
char kgdb_in_gdb_mode; char kgdb_in_gdb_mode;
char in_nmi; /* Set during NMI to prevent reentry */ char in_nmi; /* Set during NMI to prevent reentry */
int kgdb_nofault; /* Boolean to ignore bus errs (i.e. in GDB) */ 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) */ /* Default values for SCI (can override via kernel args in setup.c) */
#ifndef CONFIG_KGDB_DEFPORT #ifndef CONFIG_KGDB_DEFPORT
@ -640,7 +633,6 @@ static void do_single_step(void)
/* Flush and return */ /* Flush and return */
kgdb_flush_icache_range((long) addr, (long) addr + 2); kgdb_flush_icache_range((long) addr, (long) addr + 2);
return;
} }
/* Undo a single step */ /* Undo a single step */
@ -815,14 +807,10 @@ static void set_regs_msg(void)
/* /*
* Bring up the ports.. * 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; struct console dummy;
return kgdb_console_setup(&dummy, 0);
kgdb_console_setup(&dummy, 0);
return 0;
} }
#else #else
#define kgdb_serial_setup() 0 #define kgdb_serial_setup() 0
@ -833,22 +821,6 @@ static void kgdb_command_loop(const int excep_code, const int trapa_value)
{ {
int sigval; 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) */ /* Enter GDB mode (e.g. after detach) */
if (!kgdb_in_gdb_mode) { if (!kgdb_in_gdb_mode) {
/* Do serial setup, notify user, issue preemptive ack */ /* Do serial setup, notify user, issue preemptive ack */
@ -959,18 +931,10 @@ static void handle_exception(struct pt_regs *regs)
/* Get excode for command loop call, user access */ /* Get excode for command loop call, user access */
asm("stc r2_bank, %0":"=r"(excep_code)); 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 */ /* Act on the exception */
kgdb_command_loop(excep_code, trapa_value); kgdb_command_loop(excep_code, trapa_value);
kgdb_current = NULL;
/* Copy back the (maybe modified) registers */ /* Copy back the (maybe modified) registers */
for (count = 0; count < 16; count++) for (count = 0; count < 16; count++)
regs->regs[count] = trap_registers.regs[count]; regs->regs[count] = trap_registers.regs[count];
@ -994,11 +958,8 @@ asmlinkage void kgdb_handle_exception(unsigned long r4, unsigned long r5,
} }
/* Initialise the KGDB data structures and serial configuration */ /* 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; in_nmi = 0;
kgdb_nofault = 0; kgdb_nofault = 0;
stepped_opcode = 0; stepped_opcode = 0;

12
include/asm-sh/kgdb.h
View File

@ -19,8 +19,6 @@
#include <asm/ptrace.h> #include <asm/ptrace.h>
#include <asm/cacheflush.h> #include <asm/cacheflush.h>
struct console;
/* Same as pt_regs but has vbr in place of syscall_nr */ /* Same as pt_regs but has vbr in place of syscall_nr */
struct kgdb_regs { struct kgdb_regs {
unsigned long regs[16]; unsigned long regs[16];
@ -35,10 +33,7 @@ struct kgdb_regs {
/* State info */ /* State info */
extern char kgdb_in_gdb_mode; 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_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*/ extern char in_nmi; /* Debounce flag to prevent NMI reentry*/
/* SCI */ /* SCI */
@ -59,6 +54,7 @@ extern kgdb_debug_hook_t *kgdb_debug_hook;
extern kgdb_bus_error_hook_t *kgdb_bus_err_hook; extern kgdb_bus_error_hook_t *kgdb_bus_err_hook;
/* Console */ /* Console */
struct console;
void kgdb_console_write(struct console *co, const char *s, unsigned count); void kgdb_console_write(struct console *co, const char *s, unsigned count);
extern int kgdb_console_setup(struct console *, char *); extern int kgdb_console_setup(struct console *, char *);
@ -69,11 +65,7 @@ extern void longjmp(jmp_buf __jmpb, int __retval);
extern int setjmp(jmp_buf __jmpb); extern int setjmp(jmp_buf __jmpb);
/* Forced breakpoint */ /* Forced breakpoint */
#define breakpoint() \ #define breakpoint() __asm__ __volatile__("trapa #0x3c")
do { \
if (kgdb_enabled) \
__asm__ __volatile__("trapa #0x3c"); \
} while (0)
/* KGDB should be able to flush all kernel text space */ /* KGDB should be able to flush all kernel text space */
#if defined(CONFIG_CPU_SH4) #if defined(CONFIG_CPU_SH4)