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author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2015-10-01 14:42:29 +0300 |
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committer | Jesper Nilsson <jespern@axis.com> | 2015-11-02 20:03:04 +0100 |
commit | 4d0d39758d3e10a31e7f146d56760a92396feb85 (patch) | |
tree | ff92670f49e587f3896cda79c4767d5df9cc6fea /arch/cris/arch-v10 | |
parent | 6a13feb9c82803e2b815eca72fa7a9f5561d7861 (diff) | |
download | linux-4d0d39758d3e10a31e7f146d56760a92396feb85.tar.gz linux-4d0d39758d3e10a31e7f146d56760a92396feb85.tar.bz2 linux-4d0d39758d3e10a31e7f146d56760a92396feb85.zip |
cris: kgdb: use native hex2bin
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>
Diffstat (limited to 'arch/cris/arch-v10')
-rw-r--r-- | arch/cris/arch-v10/kernel/kgdb.c | 83 |
1 files changed, 33 insertions, 50 deletions
diff --git a/arch/cris/arch-v10/kernel/kgdb.c b/arch/cris/arch-v10/kernel/kgdb.c index 22d846bfc570..6b7616476af5 100644 --- a/arch/cris/arch-v10/kernel/kgdb.c +++ b/arch/cris/arch-v10/kernel/kgdb.c @@ -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]); } } |