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Message-Id: <1209683137.24729.208.camel@brick>
Date: Thu, 01 May 2008 16:05:37 -0700
From: Harvey Harrison <harvey.harrison@...il.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: David Howells <dhowells@...hat.com>,
LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 6/9] mn10300: gdb-stub.c use the common ascii hex helpers
Signed-off-by: Harvey Harrison <harvey.harrison@...il.com>
---
arch/mn10300/kernel/gdb-stub.c | 183 ++++++++++++++++++----------------------
1 files changed, 83 insertions(+), 100 deletions(-)
diff --git a/arch/mn10300/kernel/gdb-stub.c b/arch/mn10300/kernel/gdb-stub.c
index 21891c7..2431571 100644
--- a/arch/mn10300/kernel/gdb-stub.c
+++ b/arch/mn10300/kernel/gdb-stub.c
@@ -163,8 +163,6 @@ static char input_buffer[BUFMAX];
static char output_buffer[BUFMAX];
static char trans_buffer[BUFMAX];
-static const char hexchars[] = "0123456789abcdef";
-
struct gdbstub_bkpt {
u8 *addr; /* address of breakpoint */
u8 len; /* size of breakpoint */
@@ -179,27 +177,12 @@ static struct gdbstub_bkpt gdbstub_bkpts[256];
static void getpacket(char *buffer);
static int putpacket(char *buffer);
static int computeSignal(enum exception_code excep);
-static int hex(unsigned char ch);
static int hexToInt(char **ptr, int *intValue);
static unsigned char *mem2hex(const void *mem, char *buf, int count,
int may_fault);
static const char *hex2mem(const char *buf, void *_mem, int count,
int may_fault);
-/*
- * Convert ch from a hex digit to an int
- */
-static int hex(unsigned 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;
-}
-
#ifdef CONFIG_GDBSTUB_DEBUGGING
void debug_to_serial(const char *p, int n)
@@ -286,12 +269,12 @@ static void getpacket(char *buffer)
ret = gdbstub_io_rx_char(&ch, 0);
if (ret < 0)
error = ret;
- xmitcsum = hex(ch) << 4;
+ xmitcsum = hex_to_int(ch) << 4;
ret = gdbstub_io_rx_char(&ch, 0);
if (ret < 0)
error = ret;
- xmitcsum |= hex(ch);
+ xmitcsum |= hex_to_int(ch);
if (error) {
if (error == -EIO)
@@ -363,8 +346,8 @@ static int putpacket(char *buffer)
}
gdbstub_io_tx_char('#');
- gdbstub_io_tx_char(hexchars[checksum >> 4]);
- gdbstub_io_tx_char(hexchars[checksum & 0xf]);
+ gdbstub_io_tx_char(hex_asc_hi(checksum));
+ gdbstub_io_tx_char(hex_asc_lo(checksum));
} while (gdbstub_io_rx_char(&ch, 0),
ch == '-' && (gdbstub_io("### GDB Rx NAK\n"), 0),
@@ -394,7 +377,7 @@ static int hexToInt(char **ptr, int *intValue)
*intValue = 0;
while (**ptr) {
- hexValue = hex(**ptr);
+ hexValue = hex_to_int(**ptr);
if (hexValue < 0)
break;
@@ -822,8 +805,8 @@ unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fault)
if ((u32) mem & 1 && count >= 1) {
if (gdbstub_read_byte(mem, ch) != 0)
return 0;
- *buf++ = hexchars[ch[0] >> 4];
- *buf++ = hexchars[ch[0] & 0xf];
+ *buf++ = hex_asc_hi(ch[0]);
+ *buf++ = hex_asc_lo(ch[0]);
mem++;
count--;
}
@@ -831,10 +814,10 @@ unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fault)
if ((u32) mem & 3 && count >= 2) {
if (gdbstub_read_word(mem, ch) != 0)
return 0;
- *buf++ = hexchars[ch[0] >> 4];
- *buf++ = hexchars[ch[0] & 0xf];
- *buf++ = hexchars[ch[1] >> 4];
- *buf++ = hexchars[ch[1] & 0xf];
+ *buf++ = hex_asc_hi(ch[0]);
+ *buf++ = hex_asc_lo(ch[0]);
+ *buf++ = hex_asc_hi(ch[1]);
+ *buf++ = hex_asc_lo(ch[1]);
mem += 2;
count -= 2;
}
@@ -842,14 +825,14 @@ unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fault)
while (count >= 4) {
if (gdbstub_read_dword(mem, ch) != 0)
return 0;
- *buf++ = hexchars[ch[0] >> 4];
- *buf++ = hexchars[ch[0] & 0xf];
- *buf++ = hexchars[ch[1] >> 4];
- *buf++ = hexchars[ch[1] & 0xf];
- *buf++ = hexchars[ch[2] >> 4];
- *buf++ = hexchars[ch[2] & 0xf];
- *buf++ = hexchars[ch[3] >> 4];
- *buf++ = hexchars[ch[3] & 0xf];
+ *buf++ = hex_asc_hi(ch[0]);
+ *buf++ = hex_asc_lo(ch[0]);
+ *buf++ = hex_asc_hi(ch[1]);
+ *buf++ = hex_asc_lo(ch[1]);
+ *buf++ = hex_asc_hi(ch[2]);
+ *buf++ = hex_asc_lo(ch[2]);
+ *buf++ = hex_asc_hi(ch[3]);
+ *buf++ = hex_asc_lo(ch[3]);
mem += 4;
count -= 4;
}
@@ -857,10 +840,10 @@ unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fault)
if (count >= 2) {
if (gdbstub_read_word(mem, ch) != 0)
return 0;
- *buf++ = hexchars[ch[0] >> 4];
- *buf++ = hexchars[ch[0] & 0xf];
- *buf++ = hexchars[ch[1] >> 4];
- *buf++ = hexchars[ch[1] & 0xf];
+ *buf++ = hex_asc_hi(ch[0]);
+ *buf++ = hex_asc_lo(ch[0]);
+ *buf++ = hex_asc_hi(ch[1]);
+ *buf++ = hex_asc_lo(ch[1]);
mem += 2;
count -= 2;
}
@@ -868,8 +851,8 @@ unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fault)
if (count >= 1) {
if (gdbstub_read_byte(mem, ch) != 0)
return 0;
- *buf++ = hexchars[ch[0] >> 4];
- *buf++ = hexchars[ch[0] & 0xf];
+ *buf++ = hex_asc_hi(ch[0]);
+ *buf++ = hex_asc_lo(ch[0]);
}
*buf = 0;
@@ -892,8 +875,8 @@ const char *hex2mem(const char *buf, void *_mem, int count, int may_fault)
} ch;
if ((u32) mem & 1 && count >= 1) {
- ch.b[0] = hex(*buf++) << 4;
- ch.b[0] |= hex(*buf++);
+ ch.b[0] = hex_to_int(*buf++) << 4;
+ ch.b[0] |= hex_to_int(*buf++);
if (gdbstub_write_byte(ch.val, mem) != 0)
return 0;
mem++;
@@ -901,10 +884,10 @@ const char *hex2mem(const char *buf, void *_mem, int count, int may_fault)
}
if ((u32) mem & 3 && count >= 2) {
- ch.b[0] = hex(*buf++) << 4;
- ch.b[0] |= hex(*buf++);
- ch.b[1] = hex(*buf++) << 4;
- ch.b[1] |= hex(*buf++);
+ ch.b[0] = hex_to_int(*buf++) << 4;
+ ch.b[0] |= hex_to_int(*buf++);
+ ch.b[1] = hex_to_int(*buf++) << 4;
+ ch.b[1] |= hex_to_int(*buf++);
if (gdbstub_write_word(ch.val, mem) != 0)
return 0;
mem += 2;
@@ -912,14 +895,14 @@ const char *hex2mem(const char *buf, void *_mem, int count, int may_fault)
}
while (count >= 4) {
- ch.b[0] = hex(*buf++) << 4;
- ch.b[0] |= hex(*buf++);
- ch.b[1] = hex(*buf++) << 4;
- ch.b[1] |= hex(*buf++);
- ch.b[2] = hex(*buf++) << 4;
- ch.b[2] |= hex(*buf++);
- ch.b[3] = hex(*buf++) << 4;
- ch.b[3] |= hex(*buf++);
+ ch.b[0] = hex_to_int(*buf++) << 4;
+ ch.b[0] |= hex_to_int(*buf++);
+ ch.b[1] = hex_to_int(*buf++) << 4;
+ ch.b[1] |= hex_to_int(*buf++);
+ ch.b[2] = hex_to_int(*buf++) << 4;
+ ch.b[2] |= hex_to_int(*buf++);
+ ch.b[3] = hex_to_int(*buf++) << 4;
+ ch.b[3] |= hex_to_int(*buf++);
if (gdbstub_write_dword(ch.val, mem) != 0)
return 0;
mem += 4;
@@ -927,10 +910,10 @@ const char *hex2mem(const char *buf, void *_mem, int count, int may_fault)
}
if (count >= 2) {
- ch.b[0] = hex(*buf++) << 4;
- ch.b[0] |= hex(*buf++);
- ch.b[1] = hex(*buf++) << 4;
- ch.b[1] |= hex(*buf++);
+ ch.b[0] = hex_to_int(*buf++) << 4;
+ ch.b[0] |= hex_to_int(*buf++);
+ ch.b[1] = hex_to_int(*buf++) << 4;
+ ch.b[1] |= hex_to_int(*buf++);
if (gdbstub_write_word(ch.val, mem) != 0)
return 0;
mem += 2;
@@ -938,8 +921,8 @@ const char *hex2mem(const char *buf, void *_mem, int count, int may_fault)
}
if (count >= 1) {
- ch.b[0] = hex(*buf++) << 4;
- ch.b[0] |= hex(*buf++);
+ ch.b[0] = hex_to_int(*buf++) << 4;
+ ch.b[0] |= hex_to_int(*buf++);
if (gdbstub_write_byte(ch.val, mem) != 0)
return 0;
}
@@ -1304,14 +1287,14 @@ static int gdbstub(struct pt_regs *regs, enum exception_code excep)
*ptr++ = 'O';
ptr = mem2hex(title, ptr, sizeof(title) - 1, 0);
- hx = hexchars[(excep & 0xf000) >> 12];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(excep & 0x0f00) >> 8];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(excep & 0x00f0) >> 4];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(excep & 0x000f)];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+ hx = hex_asc_hi(excep >> 8);
+ *ptr++ = hex_asc_hi(hx); *ptr++ = hex_asc_lo(hx);
+ hx = hex_asc_lo(excep >> 8);
+ *ptr++ = hex_asc_hi(hx); *ptr++ = hex_asc_lo(hx);
+ hx = hex_asc_hi(excep);
+ *ptr++ = hex_asc_hi(hx); *ptr++ = hex_asc_lo(hx);
+ hx = hex_asc_lo(excep);
+ *ptr++ = hex_asc_hi(hx); *ptr++ = hex_asc_lo(hx);
ptr = mem2hex(crlf, ptr, sizeof(crlf) - 1, 0);
*ptr = 0;
@@ -1322,22 +1305,22 @@ static int gdbstub(struct pt_regs *regs, enum exception_code excep)
*ptr++ = 'O';
ptr = mem2hex(tbcberr, ptr, sizeof(tbcberr) - 1, 0);
- hx = hexchars[(bcberr & 0xf0000000) >> 28];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(bcberr & 0x0f000000) >> 24];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(bcberr & 0x00f00000) >> 20];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(bcberr & 0x000f0000) >> 16];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(bcberr & 0x0000f000) >> 12];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(bcberr & 0x00000f00) >> 8];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(bcberr & 0x000000f0) >> 4];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(bcberr & 0x0000000f)];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+ hx = hex_asc_hi(bcberr >> 24);
+ *ptr++ = hex_asc_hi(hx); *ptr++ = hex_asc_lo(hx);
+ hx = hex_asc_lo(bcberr >> 24);
+ *ptr++ = hex_asc_hi(hx); *ptr++ = hex_asc_lo(hx);
+ hx = hex_asc_hi(bcberr >> 16);
+ *ptr++ = hex_asc_hi(hx); *ptr++ = hex_asc_lo(hx);
+ hx = hex_asc_lo(bcberr >> 16);
+ *ptr++ = hex_asc_hi(hx); *ptr++ = hex_asc_lo(hx);
+ hx = hex_asc_hi(bcberr >> 8);
+ *ptr++ = hex_asc_hi(hx); *ptr++ = hex_asc_lo(hx);
+ hx = hex_asc_lo(bcberr >> 8);
+ *ptr++ = hex_asc_hi(hx); *ptr++ = hex_asc_lo(hx);
+ hx = hex_asc_hi(bcberr);
+ *ptr++ = hex_asc_hi(hx); *ptr++ = hex_asc_lo(hx);
+ hx = hex_asc_lo(bcberr);
+ *ptr++ = hex_asc_hi(hx); *ptr++ = hex_asc_lo(hx);
ptr = mem2hex(crlf, ptr, sizeof(crlf) - 1, 0);
*ptr = 0;
@@ -1353,14 +1336,14 @@ static int gdbstub(struct pt_regs *regs, enum exception_code excep)
* Send trap type (converted to signal)
*/
*ptr++ = 'T';
- *ptr++ = hexchars[sigval >> 4];
- *ptr++ = hexchars[sigval & 0xf];
+ *ptr++ = hex_asc_hi(sigval);
+ *ptr++ = hex_asc_lo(sigval);
/*
* Send Error PC
*/
- *ptr++ = hexchars[GDB_REGID_PC >> 4];
- *ptr++ = hexchars[GDB_REGID_PC & 0xf];
+ *ptr++ = hex_asc_hi(GDB_REGID_PC);
+ *ptr++ = hex_asc_lo(GDB_REGID_PC);
*ptr++ = ':';
ptr = mem2hex(®s->pc, ptr, 4, 0);
*ptr++ = ';';
@@ -1368,8 +1351,8 @@ static int gdbstub(struct pt_regs *regs, enum exception_code excep)
/*
* Send frame pointer
*/
- *ptr++ = hexchars[GDB_REGID_FP >> 4];
- *ptr++ = hexchars[GDB_REGID_FP & 0xf];
+ *ptr++ = hex_asc_hi(GDB_REGID_FP);
+ *ptr++ = hex_asc_lo(GDB_REGID_FP);
*ptr++ = ':';
ptr = mem2hex(®s->a3, ptr, 4, 0);
*ptr++ = ';';
@@ -1378,8 +1361,8 @@ static int gdbstub(struct pt_regs *regs, enum exception_code excep)
* Send stack pointer
*/
ssp = (unsigned long) (regs + 1);
- *ptr++ = hexchars[GDB_REGID_SP >> 4];
- *ptr++ = hexchars[GDB_REGID_SP & 0xf];
+ *ptr++ = hex_asc_hi(GDB_REGID_SP);
+ *ptr++ = hex_asc_lo(GDB_REGID_SP);
*ptr++ = ':';
ptr = mem2hex(&ssp, ptr, 4, 0);
*ptr++ = ';';
@@ -1399,8 +1382,8 @@ packet_waiting:
/* request repeat of last signal number */
case '?':
output_buffer[0] = 'S';
- output_buffer[1] = hexchars[sigval >> 4];
- output_buffer[2] = hexchars[sigval & 0xf];
+ output_buffer[1] = hex_asc_hi(sigval);
+ output_buffer[2] = hex_asc_lo(sigval);
output_buffer[3] = 0;
break;
@@ -1838,8 +1821,8 @@ void gdbstub_exit(int status)
gdbstub_busy = 1;
output_buffer[0] = 'W';
- output_buffer[1] = hexchars[(status >> 4) & 0x0F];
- output_buffer[2] = hexchars[status & 0x0F];
+ output_buffer[1] = hex_asc_hi(status);
+ output_buffer[2] = hex_asc_lo(status);
output_buffer[3] = 0;
gdbstub_io_tx_char('$');
@@ -1853,8 +1836,8 @@ void gdbstub_exit(int status)
}
gdbstub_io_tx_char('#');
- gdbstub_io_tx_char(hexchars[checksum >> 4]);
- gdbstub_io_tx_char(hexchars[checksum & 0xf]);
+ gdbstub_io_tx_char(hex_asc_hi(checksum));
+ gdbstub_io_tx_char(hex_asc_lo(checksum));
/* make sure the output is flushed, or else RedBoot might clobber it */
gdbstub_io_tx_flush();
--
1.5.5.1.305.g7c84
--
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