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Date: Wed, 30 Sep 2015 17:46:53 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Mikael Starvik <starvik@...s.com>,
Jesper Nilsson <jesper.nilsson@...s.com>,
linux-cris-kernel@...s.com, linux-kernel@...r.kernel.org
Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: Re: [PATCH] cris: kgdb: use native hex2bin
On Tue, 2013-06-04 at 11:51 +0300, Andy Shevchenko wrote:
> 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.
>
No one is interested in this?
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
> ---
> arch/cris/arch-v10/kernel/kgdb.c | 36 +++----------------------
> arch/cris/arch-v32/kernel/kgdb.c | 57 +++++++-----------------------
> ----------
> 2 files changed, 14 insertions(+), 79 deletions(-)
>
> diff --git a/arch/cris/arch-v10/kernel/kgdb.c b/arch/cris/arch
> -v10/kernel/kgdb.c
> index 22d846b..dbd4ba8 100644
> --- a/arch/cris/arch-v10/kernel/kgdb.c
> +++ b/arch/cris/arch-v10/kernel/kgdb.c
> @@ -413,18 +413,6 @@ 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 +443,6 @@ 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 +496,8 @@ 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 ('-');
> @@ -760,7 +732,7 @@ handle_exception (int sigval)
> Each byte of register data is
> described by two hex digits.
> Success: OK
> Failure: void. */
> - hex2mem((char *)&cris_reg,
> &remcomInBuffer[1], sizeof(registers));
> + hex2bin((char *)&cris_reg,
> &remcomInBuffer[1], sizeof(registers));
> gdb_cris_strcpy (remcomOutBuffer,
> "OK");
> break;
>
> @@ -835,7 +807,7 @@ 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);
> + hex2bin(addr
> , dataptr + 1, length);
> }
> else /* X */ {
> bin2mem(addr
> , dataptr + 1, length);
> diff --git a/arch/cris/arch-v32/kernel/kgdb.c b/arch/cris/arch
> -v32/kernel/kgdb.c
> index b06813a..590c11b 100644
> --- a/arch/cris/arch-v32/kernel/kgdb.c
> +++ b/arch/cris/arch-v32/kernel/kgdb.c
> @@ -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. */
> @@ -547,7 +539,7 @@ write_register(int regno, char *val)
>
> if (regno >= R0 && regno <= ACR) {
> /* Consecutive 32-bit registers. */
> - hex2mem((unsigned char *)®.r0 + (regno - R0) *
> sizeof(unsigned int),
> + hex2bin((unsigned char *)®.r0 + (regno - R0) *
> sizeof(unsigned int),
> val, sizeof(unsigned int));
>
> } else if (regno == BZ || regno == VR || regno == WZ ||
> regno == DZ) {
> @@ -557,15 +549,15 @@ 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 *)®.pid, val,
> sizeof(unsigned int));
> + hex2bin((unsigned char *)®.pid, val,
> sizeof(unsigned int));
>
> } else if (regno == SRS) {
> /* 8-bit register. */
> - hex2mem((unsigned char *)®.srs, val,
> sizeof(unsigned char));
> + hex2bin((unsigned char *)®.srs, val,
> sizeof(unsigned char));
>
> } else if (regno >= EXS && regno <= SPC) {
> /* Consecutive 32-bit registers. */
> - hex2mem((unsigned char *)®.exs + (regno - EXS) *
> sizeof(unsigned int),
> + hex2bin((unsigned char *)®.exs + (regno - EXS) *
> sizeof(unsigned int),
> val, sizeof(unsigned int));
>
> } else if (regno == PC) {
> @@ -574,7 +566,7 @@ 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));
> + hex2bin((unsigned char *)&sreg.s0_0 + (reg.srs * 16 *
> sizeof(unsigned int)) + (regno - S0) * sizeof(unsigned int), val,
> sizeof(unsigned int));
> } else {
> /* Non-existing register. */
> status = E05;
> @@ -630,19 +622,6 @@ 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 +668,6 @@ 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 +726,8 @@ 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('-');
> @@ -1306,9 +1269,9 @@ handle_exception(int sigval)
> Success: OK
> Failure: void. */
> /* General and special registers. */
> - hex2mem((char *)®,
> &input_buffer[1], sizeof(registers));
> + hex2bin((char *)®,
> &input_buffer[1], sizeof(registers));
> /* Support registers. */
> - hex2mem((char *)&sreg + (reg.srs *
> 16 * sizeof(unsigned int)),
> + hex2bin((char *)&sreg + (reg.srs *
> 16 * sizeof(unsigned int)),
> &input_buffer[1] +
> sizeof(registers),
> 16 * sizeof(unsigned int));
> gdb_cris_strcpy(output_buffer,
> "OK");
> @@ -1389,7 +1352,7 @@ 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);
> + hex2bin(addr
> , dataptr + 1, len);
> } else /* X */ {
> bin2mem(addr
> , dataptr + 1, len);
> }
--
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy
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