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cris: kgdb: use native hex2bin

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There are kernel native helpers to convert hex ascii to the binary format:
hex_to_bin() and hex2bin(). Thus, no need to reimplement them customly.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jesper Nilsson <jespern@axis.com>
This commit is contained in:
Andy Shevchenko 2015-10-01 14:42:29 +03:00 committed by Jesper Nilsson
parent 6a13feb9c8
commit 4d0d39758d
2 changed files with 71 additions and 108 deletions
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83
arch/cris/arch-v10/kernel/kgdb.c
View File

@ -275,7 +275,7 @@ static char remcomOutBuffer[BUFMAX];
/* Error and warning messages. */
enum error_type
{
SUCCESS, E01, E02, E03, E04, E05, E06, E07
SUCCESS, E01, E02, E03, E04, E05, E06, E07, E08
};
static char *error_message[] =
{
@ -286,7 +286,8 @@ static char *error_message[] =
"E04 The command is not supported - [s,C,S,!,R,d,r] - internal error.",
"E05 Change register content - P - the register is not implemented..",
"E06 Change memory content - M - internal error.",
"E07 Change register content - P - the register is not stored on the stack"
"E07 Change register content - P - the register is not stored on the stack",
"E08 Invalid parameter"
};
/********************************* Register image ****************************/
/* Use the order of registers as defined in "AXIS ETRAX CRIS Programmer's
@ -413,18 +414,6 @@ gdb_cris_strtol (const char *s, char **endptr, int base)
}
/********************************** Packet I/O ******************************/
/* Returns the integer equivalent of a hexadecimal character. */
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);
}
/* Convert the memory, pointed to by mem into hexadecimal representation.
Put the result in buf, and return a pointer to the last character
@ -455,22 +444,6 @@ mem2hex(char *buf, unsigned char *mem, int count)
return (buf);
}
/* Convert the array, in hexadecimal representation, pointed to by buf into
binary representation. Put the result in mem, and return a pointer to
the character after the last byte written. */
static unsigned char*
hex2mem (unsigned char *mem, char *buf, int count)
{
int i;
unsigned char ch;
for (i = 0; i < count; i++) {
ch = hex (*buf++) << 4;
ch = ch + hex (*buf++);
*mem++ = ch;
}
return (mem);
}
/* Put the content of the array, in binary representation, pointed to by buf
into memory pointed to by mem, and return a pointer to the character after
the last byte written.
@ -524,8 +497,8 @@ getpacket (char *buffer)
buffer[count] = '\0';
if (ch == '#') {
xmitcsum = hex (getDebugChar ()) << 4;
xmitcsum += hex (getDebugChar ());
xmitcsum = hex_to_bin(getDebugChar()) << 4;
xmitcsum += hex_to_bin(getDebugChar());
if (checksum != xmitcsum) {
/* Wrong checksum */
putDebugChar ('-');
@ -599,7 +572,7 @@ putDebugString (const unsigned char *str, int length)
/********************************* Register image ****************************/
/* Write a value to a specified register in the register image of the current
thread. Returns status code SUCCESS, E02 or E05. */
thread. Returns status code SUCCESS, E02, E05 or E08. */
static int
write_register (int regno, char *val)
{
@ -608,8 +581,9 @@ write_register (int regno, char *val)
if (regno >= R0 && regno <= PC) {
/* 32-bit register with simple offset. */
hex2mem ((unsigned char *)current_reg + regno * sizeof(unsigned int),
val, sizeof(unsigned int));
if (hex2bin((unsigned char *)current_reg + regno * sizeof(unsigned int),
val, sizeof(unsigned int)))
status = E08;
}
else if (regno == P0 || regno == VR || regno == P4 || regno == P8) {
/* Do not support read-only registers. */
@ -618,13 +592,15 @@ write_register (int regno, char *val)
else if (regno == CCR) {
/* 16 bit register with complex offset. (P4 is read-only, P6 is not implemented,
and P7 (MOF) is 32 bits in ETRAX 100LX. */
hex2mem ((unsigned char *)&(current_reg->ccr) + (regno-CCR) * sizeof(unsigned short),
val, sizeof(unsigned short));
if (hex2bin((unsigned char *)&(current_reg->ccr) + (regno-CCR) * sizeof(unsigned short),
val, sizeof(unsigned short)))
status = E08;
}
else if (regno >= MOF && regno <= USP) {
/* 32 bit register with complex offset. (P8 has been taken care of.) */
hex2mem ((unsigned char *)&(current_reg->ibr) + (regno-IBR) * sizeof(unsigned int),
val, sizeof(unsigned int));
if (hex2bin((unsigned char *)&(current_reg->ibr) + (regno-IBR) * sizeof(unsigned int),
val, sizeof(unsigned int)))
status = E08;
}
else {
/* Do not support nonexisting or unimplemented registers (P2, P3, and P6). */
@ -759,9 +735,11 @@ handle_exception (int sigval)
/* Write registers. GXX..XX
Each byte of register data is described by two hex digits.
Success: OK
Failure: void. */
hex2mem((char *)&cris_reg, &remcomInBuffer[1], sizeof(registers));
gdb_cris_strcpy (remcomOutBuffer, "OK");
Failure: E08. */
if (hex2bin((char *)&cris_reg, &remcomInBuffer[1], sizeof(registers)))
gdb_cris_strcpy (remcomOutBuffer, error_message[E08]);
else
gdb_cris_strcpy (remcomOutBuffer, "OK");
break;
case 'P':
@ -771,7 +749,7 @@ handle_exception (int sigval)
for each byte in the register (target byte order). P1f=11223344 means
set register 31 to 44332211.
Success: OK
Failure: E02, E05 */
Failure: E02, E05, E08 */
{
char *suffix;
int regno = gdb_cris_strtol (&remcomInBuffer[1], &suffix, 16);
@ -791,6 +769,10 @@ handle_exception (int sigval)
/* Do not support non-existing registers on the stack. */
gdb_cris_strcpy (remcomOutBuffer, error_message[E07]);
break;
case E08:
/* Invalid parameter. */
gdb_cris_strcpy (remcomOutBuffer, error_message[E08]);
break;
default:
/* Valid register number. */
gdb_cris_strcpy (remcomOutBuffer, "OK");
@ -826,7 +808,7 @@ handle_exception (int sigval)
AA..AA is the start address, LLLL is the number of bytes, and
XX..XX is the hexadecimal data.
Success: OK
Failure: void. */
Failure: E08. */
{
char *lenptr;
char *dataptr;
@ -835,14 +817,15 @@ handle_exception (int sigval)
int length = gdb_cris_strtol(lenptr+1, &dataptr, 16);
if (*lenptr == ',' && *dataptr == ':') {
if (remcomInBuffer[0] == 'M') {
hex2mem(addr, dataptr + 1, length);
}
else /* X */ {
if (hex2bin(addr, dataptr + 1, length))
gdb_cris_strcpy (remcomOutBuffer, error_message[E08]);
else
gdb_cris_strcpy (remcomOutBuffer, "OK");
} else /* X */ {
bin2mem(addr, dataptr + 1, length);
gdb_cris_strcpy (remcomOutBuffer, "OK");
}
gdb_cris_strcpy (remcomOutBuffer, "OK");
}
else {
} else {
gdb_cris_strcpy (remcomOutBuffer, error_message[E06]);
}
}

96
arch/cris/arch-v32/kernel/kgdb.c
View File

@ -384,19 +384,11 @@ int getDebugChar(void);
/* Serial port, writes one character. ETRAX 100 specific. from debugport.c */
void putDebugChar(int val);
/* Returns the integer equivalent of a hexadecimal character. */
static int hex(char ch);
/* Convert the memory, pointed to by mem into hexadecimal representation.
Put the result in buf, and return a pointer to the last character
in buf (null). */
static char *mem2hex(char *buf, unsigned char *mem, int count);
/* Convert the array, in hexadecimal representation, pointed to by buf into
binary representation. Put the result in mem, and return a pointer to
the character after the last byte written. */
static unsigned char *hex2mem(unsigned char *mem, char *buf, int count);
/* Put the content of the array, in binary representation, pointed to by buf
into memory pointed to by mem, and return a pointer to
the character after the last byte written. */
@ -449,7 +441,7 @@ static char output_buffer[BUFMAX];
/* Error and warning messages. */
enum error_type
{
SUCCESS, E01, E02, E03, E04, E05, E06,
SUCCESS, E01, E02, E03, E04, E05, E06, E07, E08
};
static char *error_message[] =
@ -461,6 +453,8 @@ static char *error_message[] =
"E04 The command is not supported - [s,C,S,!,R,d,r] - internal error.",
"E05 Change register content - P - the register is not implemented..",
"E06 Change memory content - M - internal error.",
"E07 Change register content - P - the register is not stored on the stack",
"E08 Invalid parameter"
};
/********************************** Breakpoint *******************************/
@ -539,7 +533,7 @@ gdb_cris_strtol(const char *s, char **endptr, int base)
/********************************* Register image ****************************/
/* Write a value to a specified register in the register image of the current
thread. Returns status code SUCCESS, E02 or E05. */
thread. Returns status code SUCCESS, E02, E05 or E08. */
static int
write_register(int regno, char *val)
{
@ -547,8 +541,9 @@ write_register(int regno, char *val)
if (regno >= R0 && regno <= ACR) {
/* Consecutive 32-bit registers. */
hex2mem((unsigned char *)&reg.r0 + (regno - R0) * sizeof(unsigned int),
val, sizeof(unsigned int));
if (hex2bin((unsigned char *)&reg.r0 + (regno - R0) * sizeof(unsigned int),
val, sizeof(unsigned int)))
status = E08;
} else if (regno == BZ || regno == VR || regno == WZ || regno == DZ) {
/* Read-only registers. */
@ -557,16 +552,19 @@ write_register(int regno, char *val)
} else if (regno == PID) {
/* 32-bit register. (Even though we already checked SRS and WZ, we cannot
combine this with the EXS - SPC write since SRS and WZ have different size.) */
hex2mem((unsigned char *)&reg.pid, val, sizeof(unsigned int));
if (hex2bin((unsigned char *)&reg.pid, val, sizeof(unsigned int)))
status = E08;
} else if (regno == SRS) {
/* 8-bit register. */
hex2mem((unsigned char *)&reg.srs, val, sizeof(unsigned char));
if (hex2bin((unsigned char *)&reg.srs, val, sizeof(unsigned char)))
status = E08;
} else if (regno >= EXS && regno <= SPC) {
/* Consecutive 32-bit registers. */
hex2mem((unsigned char *)&reg.exs + (regno - EXS) * sizeof(unsigned int),
val, sizeof(unsigned int));
if (hex2bin((unsigned char *)&reg.exs + (regno - EXS) * sizeof(unsigned int),
val, sizeof(unsigned int)))
status = E08;
} else if (regno == PC) {
/* Pseudo-register. Treat as read-only. */
@ -574,7 +572,9 @@ write_register(int regno, char *val)
} else if (regno >= S0 && regno <= S15) {
/* 32-bit registers. */
hex2mem((unsigned char *)&sreg.s0_0 + (reg.srs * 16 * sizeof(unsigned int)) + (regno - S0) * sizeof(unsigned int), val, sizeof(unsigned int));
if (hex2bin((unsigned char *)&sreg.s0_0 + (reg.srs * 16 * sizeof(unsigned int)) + (regno - S0) * sizeof(unsigned int),
val, sizeof(unsigned int)))
status = E08;
} else {
/* Non-existing register. */
status = E05;
@ -630,19 +630,6 @@ read_register(char regno, unsigned int *valptr)
}
/********************************** Packet I/O ******************************/
/* Returns the integer equivalent of a hexadecimal character. */
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;
}
/* Convert the memory, pointed to by mem into hexadecimal representation.
Put the result in buf, and return a pointer to the last character
in buf (null). */
@ -689,22 +676,6 @@ mem2hex_nbo(char *buf, unsigned char *mem, int count)
return buf;
}
/* Convert the array, in hexadecimal representation, pointed to by buf into
binary representation. Put the result in mem, and return a pointer to
the character after the last byte written. */
static unsigned char*
hex2mem(unsigned char *mem, char *buf, int count)
{
int i;
unsigned char ch;
for (i = 0; i < count; i++) {
ch = hex (*buf++) << 4;
ch = ch + hex (*buf++);
*mem++ = ch;
}
return mem;
}
/* Put the content of the array, in binary representation, pointed to by buf
into memory pointed to by mem, and return a pointer to the character after
the last byte written.
@ -763,8 +734,8 @@ getpacket(char *buffer)
buffer[count] = 0;
if (ch == '#') {
xmitcsum = hex(getDebugChar()) << 4;
xmitcsum += hex(getDebugChar());
xmitcsum = hex_to_bin(getDebugChar()) << 4;
xmitcsum += hex_to_bin(getDebugChar());
if (checksum != xmitcsum) {
/* Wrong checksum */
putDebugChar('-');
@ -1304,14 +1275,17 @@ handle_exception(int sigval)
/* Write registers. GXX..XX
Each byte of register data is described by two hex digits.
Success: OK
Failure: void. */
Failure: E08. */
/* General and special registers. */
hex2mem((char *)&reg, &input_buffer[1], sizeof(registers));
if (hex2bin((char *)&reg, &input_buffer[1], sizeof(registers)))
gdb_cris_strcpy(output_buffer, error_message[E08]);
/* Support registers. */
hex2mem((char *)&sreg + (reg.srs * 16 * sizeof(unsigned int)),
else if (hex2bin((char *)&sreg + (reg.srs * 16 * sizeof(unsigned int)),
&input_buffer[1] + sizeof(registers),
16 * sizeof(unsigned int));
gdb_cris_strcpy(output_buffer, "OK");
16 * sizeof(unsigned int)))
gdb_cris_strcpy(output_buffer, error_message[E08]);
else
gdb_cris_strcpy(output_buffer, "OK");
break;
case 'P':
@ -1338,6 +1312,10 @@ handle_exception(int sigval)
/* Do not support non-existing registers. */
gdb_cris_strcpy(output_buffer, error_message[E05]);
break;
case E08:
/* Invalid parameter. */
gdb_cris_strcpy(output_buffer, error_message[E08]);
break;
default:
/* Valid register number. */
gdb_cris_strcpy(output_buffer, "OK");
@ -1380,7 +1358,7 @@ handle_exception(int sigval)
AA..AA is the start address, LLLL is the number of bytes, and
XX..XX is the hexadecimal data.
Success: OK
Failure: void. */
Failure: E08. */
{
char *lenptr;
char *dataptr;
@ -1389,13 +1367,15 @@ handle_exception(int sigval)
int len = gdb_cris_strtol(lenptr+1, &dataptr, 16);
if (*lenptr == ',' && *dataptr == ':') {
if (input_buffer[0] == 'M') {
hex2mem(addr, dataptr + 1, len);
if (hex2bin(addr, dataptr + 1, len))
gdb_cris_strcpy(output_buffer, error_message[E08]);
else
gdb_cris_strcpy(output_buffer, "OK");
} else /* X */ {
bin2mem(addr, dataptr + 1, len);
gdb_cris_strcpy(output_buffer, "OK");
}
gdb_cris_strcpy(output_buffer, "OK");
}
else {
} else {
gdb_cris_strcpy(output_buffer, error_message[E06]);
}
}