* Licensed under the GPL-2 or later.
*/
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/spinlock.h>
-#include <linux/delay.h>
#include <linux/ptrace.h> /* for linux pt_regs struct */
#include <linux/kgdb.h>
-#include <linux/console.h>
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/irq.h>
#include <linux/uaccess.h>
-#include <asm/system.h>
-#include <asm/traps.h>
-#include <asm/blackfin.h>
-#include <asm/dma.h>
void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
{
regs->lb1 = gdb_regs[BFIN_LB1];
regs->usp = gdb_regs[BFIN_USP];
regs->syscfg = gdb_regs[BFIN_SYSCFG];
- regs->retx = gdb_regs[BFIN_PC];
+ regs->retx = gdb_regs[BFIN_RETX];
regs->retn = gdb_regs[BFIN_RETN];
regs->rete = gdb_regs[BFIN_RETE];
regs->pc = gdb_regs[BFIN_PC];
#endif
}
-struct hw_breakpoint {
+static struct hw_breakpoint {
unsigned int occupied:1;
unsigned int skip:1;
unsigned int enabled:1;
unsigned int addr;
} breakinfo[HW_WATCHPOINT_NUM];
-int bfin_set_hw_break(unsigned long addr, int len, enum kgdb_bptype type)
+static int bfin_set_hw_break(unsigned long addr, int len, enum kgdb_bptype type)
{
int breakno;
int bfin_type;
return -ENOSPC;
}
-int bfin_remove_hw_break(unsigned long addr, int len, enum kgdb_bptype type)
+static int bfin_remove_hw_break(unsigned long addr, int len, enum kgdb_bptype type)
{
int breakno;
int bfin_type;
return 0;
}
-void bfin_remove_all_hw_break(void)
+static void bfin_remove_all_hw_break(void)
{
int breakno;
breakinfo[breakno].type = TYPE_DATA_WATCHPOINT;
}
-void bfin_correct_hw_break(void)
+static void bfin_correct_hw_break(void)
{
int breakno;
unsigned int wpiactl = 0;
.correct_hw_break = bfin_correct_hw_break,
};
-static int hex(char ch)
-{
- if ((ch >= 'a') && (ch <= 'f'))
- return ch - 'a' + 10;
- if ((ch >= '0') && (ch <= '9'))
- return ch - '0';
- if ((ch >= 'A') && (ch <= 'F'))
- return ch - 'A' + 10;
- return -1;
-}
-
-static int validate_memory_access_address(unsigned long addr, int size)
-{
- if (size < 0 || addr == 0)
- return -EFAULT;
- return bfin_mem_access_type(addr, size);
-}
-
-static int bfin_probe_kernel_read(char *dst, char *src, int size)
-{
- unsigned long lsrc = (unsigned long)src;
- int mem_type;
-
- mem_type = validate_memory_access_address(lsrc, size);
- if (mem_type < 0)
- return mem_type;
-
- if (lsrc >= SYSMMR_BASE) {
- if (size == 2 && lsrc % 2 == 0) {
- u16 mmr = bfin_read16(src);
- memcpy(dst, &mmr, sizeof(mmr));
- return 0;
- } else if (size == 4 && lsrc % 4 == 0) {
- u32 mmr = bfin_read32(src);
- memcpy(dst, &mmr, sizeof(mmr));
- return 0;
- }
- } else {
- switch (mem_type) {
- case BFIN_MEM_ACCESS_CORE:
- case BFIN_MEM_ACCESS_CORE_ONLY:
- return probe_kernel_read(dst, src, size);
- /* XXX: should support IDMA here with SMP */
- case BFIN_MEM_ACCESS_DMA:
- if (dma_memcpy(dst, src, size))
- return 0;
- break;
- case BFIN_MEM_ACCESS_ITEST:
- if (isram_memcpy(dst, src, size))
- return 0;
- break;
- }
- }
-
- return -EFAULT;
-}
-
-static int bfin_probe_kernel_write(char *dst, char *src, int size)
-{
- unsigned long ldst = (unsigned long)dst;
- int mem_type;
-
- mem_type = validate_memory_access_address(ldst, size);
- if (mem_type < 0)
- return mem_type;
-
- if (ldst >= SYSMMR_BASE) {
- if (size == 2 && ldst % 2 == 0) {
- u16 mmr;
- memcpy(&mmr, src, sizeof(mmr));
- bfin_write16(dst, mmr);
- return 0;
- } else if (size == 4 && ldst % 4 == 0) {
- u32 mmr;
- memcpy(&mmr, src, sizeof(mmr));
- bfin_write32(dst, mmr);
- return 0;
- }
- } else {
- switch (mem_type) {
- case BFIN_MEM_ACCESS_CORE:
- case BFIN_MEM_ACCESS_CORE_ONLY:
- return probe_kernel_write(dst, src, size);
- /* XXX: should support IDMA here with SMP */
- case BFIN_MEM_ACCESS_DMA:
- if (dma_memcpy(dst, src, size))
- return 0;
- break;
- case BFIN_MEM_ACCESS_ITEST:
- if (isram_memcpy(dst, src, size))
- return 0;
- break;
- }
- }
-
- return -EFAULT;
-}
-
-/*
- * Convert the memory pointed to by mem into hex, placing result in buf.
- * Return a pointer to the last char put in buf (null). May return an error.
- */
-int kgdb_mem2hex(char *mem, char *buf, int count)
-{
- char *tmp;
- int err;
-
- /*
- * We use the upper half of buf as an intermediate buffer for the
- * raw memory copy. Hex conversion will work against this one.
- */
- tmp = buf + count;
-
- err = bfin_probe_kernel_read(tmp, mem, count);
- if (!err) {
- while (count > 0) {
- buf = pack_hex_byte(buf, *tmp);
- tmp++;
- count--;
- }
-
- *buf = 0;
- }
-
- return err;
-}
-
-/*
- * Copy the binary array pointed to by buf into mem. Fix $, #, and
- * 0x7d escaped with 0x7d. Return a pointer to the character after
- * the last byte written.
- */
-int kgdb_ebin2mem(char *buf, char *mem, int count)
-{
- char *tmp_old, *tmp_new;
- int size;
-
- tmp_old = tmp_new = buf;
-
- for (size = 0; size < count; ++size) {
- if (*tmp_old == 0x7d)
- *tmp_new = *(++tmp_old) ^ 0x20;
- else
- *tmp_new = *tmp_old;
- tmp_new++;
- tmp_old++;
- }
-
- return bfin_probe_kernel_write(mem, buf, count);
-}
-
-/*
- * Convert the hex array pointed to by buf into binary to be placed in mem.
- * Return a pointer to the character AFTER the last byte written.
- * May return an error.
- */
-int kgdb_hex2mem(char *buf, char *mem, int count)
-{
- char *tmp_raw, *tmp_hex;
-
- /*
- * We use the upper half of buf as an intermediate buffer for the
- * raw memory that is converted from hex.
- */
- tmp_raw = buf + count * 2;
-
- tmp_hex = tmp_raw - 1;
- while (tmp_hex >= buf) {
- tmp_raw--;
- *tmp_raw = hex(*tmp_hex--);
- *tmp_raw |= hex(*tmp_hex--) << 4;
- }
-
- return bfin_probe_kernel_write(mem, tmp_raw, count);
-}
-
#define IN_MEM(addr, size, l1_addr, l1_size) \
({ \
unsigned long __addr = (unsigned long)(addr); \
return -EFAULT;
}
-int kgdb_arch_set_breakpoint(unsigned long addr, char *saved_instr)
-{
- int err = bfin_probe_kernel_read(saved_instr, (char *)addr,
- BREAK_INSTR_SIZE);
- if (err)
- return err;
- return bfin_probe_kernel_write((char *)addr, arch_kgdb_ops.gdb_bpt_instr,
- BREAK_INSTR_SIZE);
-}
-
-int kgdb_arch_remove_breakpoint(unsigned long addr, char *bundle)
-{
- return bfin_probe_kernel_write((char *)addr, bundle, BREAK_INSTR_SIZE);
-}
-
int kgdb_arch_init(void)
{
kgdb_single_step = 0;
git.samba.org / sfrench / cifs-2.6.git / blobdiff