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Diffstat (limited to 'arch/frv/kernel/gdb-stub.c')
-rw-r--r--arch/frv/kernel/gdb-stub.c343
1 files changed, 204 insertions, 139 deletions
diff --git a/arch/frv/kernel/gdb-stub.c b/arch/frv/kernel/gdb-stub.c
index 8f860d9c494..bbe78b0bffe 100644
--- a/arch/frv/kernel/gdb-stub.c
+++ b/arch/frv/kernel/gdb-stub.c
@@ -87,7 +87,7 @@
* Example:
* $ cd ~/linux
* $ make menuconfig <go to "Kernel Hacking" and turn on remote debugging>
- * $ make dep; make vmlinux
+ * $ make vmlinux
*
* Step 3:
* Download the kernel to the remote target and start
@@ -124,8 +124,8 @@
#include <linux/slab.h>
#include <linux/nmi.h>
+#include <asm/asm-offsets.h>
#include <asm/pgtable.h>
-#include <asm/system.h>
#include <asm/gdb-stub.h>
#define LEDS(x) do { /* *(u32*)0xe1200004 = ~(x); mb(); */ } while(0)
@@ -136,7 +136,6 @@ extern void debug_to_serial(const char *p, int n);
extern void gdbstub_console_write(struct console *co, const char *p, unsigned n);
extern volatile uint32_t __break_error_detect[3]; /* ESFR1, ESR15, EAR15 */
-extern struct user_context __break_user_context;
struct __debug_amr {
unsigned long L, P;
@@ -182,8 +181,6 @@ extern volatile u32 __attribute__((section(".bss"))) gdbstub_trace_through_excep
static char input_buffer[BUFMAX];
static char output_buffer[BUFMAX];
-static const char hexchars[] = "0123456789abcdef";
-
static const char *regnames[] = {
"PSR ", "ISR ", "CCR ", "CCCR",
"LR ", "LCR ", "PC ", "_stt",
@@ -383,8 +380,8 @@ static int gdbstub_send_packet(char *buffer)
}
gdbstub_tx_char('#');
- gdbstub_tx_char(hexchars[checksum >> 4]);
- gdbstub_tx_char(hexchars[checksum & 0xf]);
+ gdbstub_tx_char(hex_asc_hi(checksum));
+ gdbstub_tx_char(hex_asc_lo(checksum));
} while (gdbstub_rx_char(&ch,0),
#ifdef GDBSTUB_DEBUG_PROTOCOL
@@ -647,17 +644,11 @@ void debug_to_serial(const char *p, int n)
}
#endif
-#ifdef CONFIG_GDBSTUB_CONSOLE
-
-static kdev_t gdbstub_console_dev(struct console *con)
-{
- return MKDEV(1,3); /* /dev/null */
-}
+#ifdef CONFIG_GDB_CONSOLE
static struct console gdbstub_console = {
.name = "gdb",
.write = gdbstub_console_write, /* in break.S */
- .device = gdbstub_console_dev,
.flags = CON_PRINTBUFFER,
.index = -1,
};
@@ -680,8 +671,7 @@ static unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fa
if ((uint32_t)mem&1 && count>=1) {
if (!gdbstub_read_byte(mem,ch))
return NULL;
- *buf++ = hexchars[ch[0] >> 4];
- *buf++ = hexchars[ch[0] & 0xf];
+ buf = hex_byte_pack(buf, ch[0]);
mem++;
count--;
}
@@ -689,10 +679,8 @@ static unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fa
if ((uint32_t)mem&3 && count>=2) {
if (!gdbstub_read_word(mem,(uint16_t *)ch))
return NULL;
- *buf++ = hexchars[ch[0] >> 4];
- *buf++ = hexchars[ch[0] & 0xf];
- *buf++ = hexchars[ch[1] >> 4];
- *buf++ = hexchars[ch[1] & 0xf];
+ buf = hex_byte_pack(buf, ch[0]);
+ buf = hex_byte_pack(buf, ch[1]);
mem += 2;
count -= 2;
}
@@ -700,14 +688,10 @@ static unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fa
while (count>=4) {
if (!gdbstub_read_dword(mem,(uint32_t *)ch))
return NULL;
- *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_byte_pack(buf, ch[0]);
+ buf = hex_byte_pack(buf, ch[1]);
+ buf = hex_byte_pack(buf, ch[2]);
+ buf = hex_byte_pack(buf, ch[3]);
mem += 4;
count -= 4;
}
@@ -715,10 +699,8 @@ static unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fa
if (count>=2) {
if (!gdbstub_read_word(mem,(uint16_t *)ch))
return NULL;
- *buf++ = hexchars[ch[0] >> 4];
- *buf++ = hexchars[ch[0] & 0xf];
- *buf++ = hexchars[ch[1] >> 4];
- *buf++ = hexchars[ch[1] & 0xf];
+ buf = hex_byte_pack(buf, ch[0]);
+ buf = hex_byte_pack(buf, ch[1]);
mem += 2;
count -= 2;
}
@@ -726,8 +708,7 @@ static unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fa
if (count>=1) {
if (!gdbstub_read_byte(mem,ch))
return NULL;
- *buf++ = hexchars[ch[0] >> 4];
- *buf++ = hexchars[ch[0] & 0xf];
+ buf = hex_byte_pack(buf, ch[0]);
}
*buf = 0;
@@ -926,6 +907,7 @@ static int gdbstub_set_breakpoint(unsigned long type, unsigned long addr, unsign
if (!(__debug_regs->dcr & DCR_IBE0)) {
//gdbstub_printk("set h/w break 0: %08lx\n", addr);
__debug_regs->dcr |= DCR_IBE0;
+ __debug_regs->ibar[0] = addr;
asm volatile("movgs %0,ibar0" : : "r"(addr));
return 0;
}
@@ -933,6 +915,7 @@ static int gdbstub_set_breakpoint(unsigned long type, unsigned long addr, unsign
if (!(__debug_regs->dcr & DCR_IBE1)) {
//gdbstub_printk("set h/w break 1: %08lx\n", addr);
__debug_regs->dcr |= DCR_IBE1;
+ __debug_regs->ibar[1] = addr;
asm volatile("movgs %0,ibar1" : : "r"(addr));
return 0;
}
@@ -940,6 +923,7 @@ static int gdbstub_set_breakpoint(unsigned long type, unsigned long addr, unsign
if (!(__debug_regs->dcr & DCR_IBE2)) {
//gdbstub_printk("set h/w break 2: %08lx\n", addr);
__debug_regs->dcr |= DCR_IBE2;
+ __debug_regs->ibar[2] = addr;
asm volatile("movgs %0,ibar2" : : "r"(addr));
return 0;
}
@@ -947,6 +931,7 @@ static int gdbstub_set_breakpoint(unsigned long type, unsigned long addr, unsign
if (!(__debug_regs->dcr & DCR_IBE3)) {
//gdbstub_printk("set h/w break 3: %08lx\n", addr);
__debug_regs->dcr |= DCR_IBE3;
+ __debug_regs->ibar[3] = addr;
asm volatile("movgs %0,ibar3" : : "r"(addr));
return 0;
}
@@ -971,7 +956,14 @@ static int gdbstub_set_breakpoint(unsigned long type, unsigned long addr, unsign
if (!(__debug_regs->dcr & (DCR_DRBE0|DCR_DWBE0))) {
//gdbstub_printk("set h/w watchpoint 0 type %ld: %08lx\n", type, addr);
tmp = type==2 ? DCR_DWBE0 : type==3 ? DCR_DRBE0 : DCR_DRBE0|DCR_DWBE0;
+
__debug_regs->dcr |= tmp;
+ __debug_regs->dbar[0] = addr;
+ __debug_regs->dbmr[0][0] = dbmr.mask0;
+ __debug_regs->dbmr[0][1] = dbmr.mask1;
+ __debug_regs->dbdr[0][0] = 0;
+ __debug_regs->dbdr[0][1] = 0;
+
asm volatile(" movgs %0,dbar0 \n"
" movgs %1,dbmr00 \n"
" movgs %2,dbmr01 \n"
@@ -984,7 +976,14 @@ static int gdbstub_set_breakpoint(unsigned long type, unsigned long addr, unsign
if (!(__debug_regs->dcr & (DCR_DRBE1|DCR_DWBE1))) {
//gdbstub_printk("set h/w watchpoint 1 type %ld: %08lx\n", type, addr);
tmp = type==2 ? DCR_DWBE1 : type==3 ? DCR_DRBE1 : DCR_DRBE1|DCR_DWBE1;
+
__debug_regs->dcr |= tmp;
+ __debug_regs->dbar[1] = addr;
+ __debug_regs->dbmr[1][0] = dbmr.mask0;
+ __debug_regs->dbmr[1][1] = dbmr.mask1;
+ __debug_regs->dbdr[1][0] = 0;
+ __debug_regs->dbdr[1][1] = 0;
+
asm volatile(" movgs %0,dbar1 \n"
" movgs %1,dbmr10 \n"
" movgs %2,dbmr11 \n"
@@ -1047,6 +1046,7 @@ int gdbstub_clear_breakpoint(unsigned long type, unsigned long addr, unsigned lo
if (__debug_regs->dcr & DCR_IBE0 && __get_ibar(0) == addr) {
//gdbstub_printk("clear h/w break 0: %08lx\n", addr);
__debug_regs->dcr &= ~DCR_IBE0;
+ __debug_regs->ibar[0] = 0;
asm volatile("movgs gr0,ibar0");
return 0;
}
@@ -1054,6 +1054,7 @@ int gdbstub_clear_breakpoint(unsigned long type, unsigned long addr, unsigned lo
if (__debug_regs->dcr & DCR_IBE1 && __get_ibar(1) == addr) {
//gdbstub_printk("clear h/w break 1: %08lx\n", addr);
__debug_regs->dcr &= ~DCR_IBE1;
+ __debug_regs->ibar[1] = 0;
asm volatile("movgs gr0,ibar1");
return 0;
}
@@ -1061,6 +1062,7 @@ int gdbstub_clear_breakpoint(unsigned long type, unsigned long addr, unsigned lo
if (__debug_regs->dcr & DCR_IBE2 && __get_ibar(2) == addr) {
//gdbstub_printk("clear h/w break 2: %08lx\n", addr);
__debug_regs->dcr &= ~DCR_IBE2;
+ __debug_regs->ibar[2] = 0;
asm volatile("movgs gr0,ibar2");
return 0;
}
@@ -1068,6 +1070,7 @@ int gdbstub_clear_breakpoint(unsigned long type, unsigned long addr, unsigned lo
if (__debug_regs->dcr & DCR_IBE3 && __get_ibar(3) == addr) {
//gdbstub_printk("clear h/w break 3: %08lx\n", addr);
__debug_regs->dcr &= ~DCR_IBE3;
+ __debug_regs->ibar[3] = 0;
asm volatile("movgs gr0,ibar3");
return 0;
}
@@ -1104,6 +1107,12 @@ int gdbstub_clear_breakpoint(unsigned long type, unsigned long addr, unsigned lo
//gdbstub_printk("clear h/w watchpoint 0 type %ld: %08lx\n", type, addr);
__debug_regs->dcr &= ~(DCR_DRBE0|DCR_DWBE0);
+ __debug_regs->dbar[0] = 0;
+ __debug_regs->dbmr[0][0] = 0;
+ __debug_regs->dbmr[0][1] = 0;
+ __debug_regs->dbdr[0][0] = 0;
+ __debug_regs->dbdr[0][1] = 0;
+
asm volatile(" movgs gr0,dbar0 \n"
" movgs gr0,dbmr00 \n"
" movgs gr0,dbmr01 \n"
@@ -1123,6 +1132,12 @@ int gdbstub_clear_breakpoint(unsigned long type, unsigned long addr, unsigned lo
//gdbstub_printk("clear h/w watchpoint 1 type %ld: %08lx\n", type, addr);
__debug_regs->dcr &= ~(DCR_DRBE1|DCR_DWBE1);
+ __debug_regs->dbar[1] = 0;
+ __debug_regs->dbmr[1][0] = 0;
+ __debug_regs->dbmr[1][1] = 0;
+ __debug_regs->dbdr[1][0] = 0;
+ __debug_regs->dbdr[1][1] = 0;
+
asm volatile(" movgs gr0,dbar1 \n"
" movgs gr0,dbmr10 \n"
" movgs gr0,dbmr11 \n"
@@ -1161,9 +1176,9 @@ static void gdbstub_check_breakpoint(void)
/*
*
*/
-static void __attribute__((unused)) gdbstub_show_regs(void)
+static void __maybe_unused gdbstub_show_regs(void)
{
- uint32_t *reg;
+ unsigned long *reg;
int loop;
gdbstub_printk("\n");
@@ -1172,11 +1187,11 @@ static void __attribute__((unused)) gdbstub_show_regs(void)
__debug_frame,
__debug_frame->psr & PSR_S ? "kernel" : "user");
- reg = (uint32_t *) __debug_frame;
- for (loop = 0; loop < REG__END; loop++) {
- printk("%s %08x", regnames[loop + 0], reg[loop + 0]);
+ reg = (unsigned long *) __debug_frame;
+ for (loop = 0; loop < NR_PT_REGS; loop++) {
+ printk("%s %08lx", regnames[loop + 0], reg[loop + 0]);
- if (loop == REG__END - 1 || loop % 5 == 4)
+ if (loop == NR_PT_REGS - 1 || loop % 5 == 4)
printk("\n");
else
printk(" | ");
@@ -1189,15 +1204,10 @@ static void __attribute__((unused)) gdbstub_show_regs(void)
/*
* dump debugging regs
*/
-static void __attribute__((unused)) gdbstub_dump_debugregs(void)
+static void __maybe_unused gdbstub_dump_debugregs(void)
{
- unsigned long x;
-
- x = __debug_regs->dcr;
- gdbstub_printk("DCR %08lx ", x);
-
- x = __debug_regs->brr;
- gdbstub_printk("BRR %08lx\n", x);
+ gdbstub_printk("DCR %08lx ", __debug_status.dcr);
+ gdbstub_printk("BRR %08lx\n", __debug_status.brr);
gdbstub_printk("IBAR0 %08lx ", __get_ibar(0));
gdbstub_printk("IBAR1 %08lx ", __get_ibar(1));
@@ -1333,6 +1343,44 @@ void gdbstub_get_mmu_state(void)
} /* end gdbstub_get_mmu_state() */
+/*
+ * handle general query commands of the form 'qXXXXX'
+ */
+static void gdbstub_handle_query(void)
+{
+ if (strcmp(input_buffer, "qAttached") == 0) {
+ /* return current thread ID */
+ sprintf(output_buffer, "1");
+ return;
+ }
+
+ if (strcmp(input_buffer, "qC") == 0) {
+ /* return current thread ID */
+ sprintf(output_buffer, "QC 0");
+ return;
+ }
+
+ if (strcmp(input_buffer, "qOffsets") == 0) {
+ /* return relocation offset of text and data segments */
+ sprintf(output_buffer, "Text=0;Data=0;Bss=0");
+ return;
+ }
+
+ if (strcmp(input_buffer, "qSymbol::") == 0) {
+ sprintf(output_buffer, "OK");
+ return;
+ }
+
+ if (strcmp(input_buffer, "qSupported") == 0) {
+ /* query of supported features */
+ sprintf(output_buffer, "PacketSize=%u;ReverseContinue-;ReverseStep-",
+ sizeof(input_buffer));
+ return;
+ }
+
+ gdbstub_strcpy(output_buffer,"E01");
+}
+
/*****************************************************************************/
/*
* handle event interception and GDB remote protocol processing
@@ -1360,7 +1408,7 @@ void gdbstub(int sigval)
#endif
}
- save_user_regs(&__break_user_context);
+ save_user_regs(&__debug_frame0->uc);
#if 0
gdbstub_printk("--> gdbstub() %08x %p %08x %08x\n",
@@ -1389,8 +1437,8 @@ void gdbstub(int sigval)
__debug_frame->psr &= ~PSR_S;
if (__debug_frame->psr & PSR_PS)
__debug_frame->psr |= PSR_S;
- __debug_regs->brr = (__debug_frame->tbr & TBR_TT) << 12;
- __debug_regs->brr |= BRR_EB;
+ __debug_status.brr = (__debug_frame->tbr & TBR_TT) << 12;
+ __debug_status.brr |= BRR_EB;
sigval = SIGINT;
}
@@ -1404,15 +1452,15 @@ void gdbstub(int sigval)
__debug_frame->psr &= ~PSR_S;
if (__debug_frame->psr & PSR_PS)
__debug_frame->psr |= PSR_S;
- __debug_regs->brr = (__debug_frame->tbr & TBR_TT) << 12;
- __debug_regs->brr |= BRR_EB;
- sigval = SIGXCPU;;
+ __debug_status.brr = (__debug_frame->tbr & TBR_TT) << 12;
+ __debug_status.brr |= BRR_EB;
+ sigval = SIGXCPU;
}
LEDS(0x5002);
/* after a BREAK insn, the PC lands on the far side of it */
- if (__debug_regs->brr & BRR_SB)
+ if (__debug_status.brr & BRR_SB)
gdbstub_check_breakpoint();
LEDS(0x5003);
@@ -1431,7 +1479,7 @@ void gdbstub(int sigval)
}
if (!sigval)
- sigval = gdbstub_compute_signal(__debug_regs->brr);
+ sigval = gdbstub_compute_signal(__debug_status.brr);
LEDS(0x5004);
@@ -1441,29 +1489,29 @@ void gdbstub(int sigval)
if (sigval != SIGINT && sigval != SIGTRAP && sigval != SIGILL) {
static const char title[] = "Break ";
static const char crlf[] = "\r\n";
- unsigned long brr = __debug_regs->brr;
+ unsigned long brr = __debug_status.brr;
char hx;
ptr = output_buffer;
*ptr++ = 'O';
ptr = mem2hex(title, ptr, sizeof(title) - 1,0);
- hx = hexchars[(brr & 0xf0000000) >> 28];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(brr & 0x0f000000) >> 24];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(brr & 0x00f00000) >> 20];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(brr & 0x000f0000) >> 16];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(brr & 0x0000f000) >> 12];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(brr & 0x00000f00) >> 8];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(brr & 0x000000f0) >> 4];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
- hx = hexchars[(brr & 0x0000000f)];
- *ptr++ = hexchars[hx >> 4]; *ptr++ = hexchars[hx & 0xf];
+ hx = hex_asc_hi(brr >> 24);
+ ptr = hex_byte_pack(ptr, hx);
+ hx = hex_asc_lo(brr >> 24);
+ ptr = hex_byte_pack(ptr, hx);
+ hx = hex_asc_hi(brr >> 16);
+ ptr = hex_byte_pack(ptr, hx);
+ hx = hex_asc_lo(brr >> 16);
+ ptr = hex_byte_pack(ptr, hx);
+ hx = hex_asc_hi(brr >> 8);
+ ptr = hex_byte_pack(ptr, hx);
+ hx = hex_asc_lo(brr >> 8);
+ ptr = hex_byte_pack(ptr, hx);
+ hx = hex_asc_hi(brr);
+ ptr = hex_byte_pack(ptr, hx);
+ hx = hex_asc_lo(brr);
+ ptr = hex_byte_pack(ptr, hx);
ptr = mem2hex(crlf, ptr, sizeof(crlf) - 1, 0);
*ptr = 0;
@@ -1477,12 +1525,10 @@ void gdbstub(int sigval)
/* Send trap type (converted to signal) */
*ptr++ = 'T';
- *ptr++ = hexchars[sigval >> 4];
- *ptr++ = hexchars[sigval & 0xf];
+ ptr = hex_byte_pack(ptr, sigval);
/* Send Error PC */
- *ptr++ = hexchars[GDB_REG_PC >> 4];
- *ptr++ = hexchars[GDB_REG_PC & 0xf];
+ ptr = hex_byte_pack(ptr, GDB_REG_PC);
*ptr++ = ':';
ptr = mem2hex(&__debug_frame->pc, ptr, 4, 0);
*ptr++ = ';';
@@ -1490,8 +1536,7 @@ void gdbstub(int sigval)
/*
* Send frame pointer
*/
- *ptr++ = hexchars[GDB_REG_FP >> 4];
- *ptr++ = hexchars[GDB_REG_FP & 0xf];
+ ptr = hex_byte_pack(ptr, GDB_REG_FP);
*ptr++ = ':';
ptr = mem2hex(&__debug_frame->fp, ptr, 4, 0);
*ptr++ = ';';
@@ -1499,8 +1544,7 @@ void gdbstub(int sigval)
/*
* Send stack pointer
*/
- *ptr++ = hexchars[GDB_REG_SP >> 4];
- *ptr++ = hexchars[GDB_REG_SP & 0xf];
+ ptr = hex_byte_pack(ptr, GDB_REG_SP);
*ptr++ = ':';
ptr = mem2hex(&__debug_frame->sp, ptr, 4, 0);
*ptr++ = ';';
@@ -1525,8 +1569,8 @@ void gdbstub(int sigval)
/* 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;
@@ -1565,28 +1609,24 @@ void gdbstub(int sigval)
ptr = mem2hex(&zero, ptr, 4, 0);
for (loop = 1; loop <= 27; loop++)
- ptr = mem2hex((unsigned long *)__debug_frame + REG_GR(loop),
- ptr, 4, 0);
+ ptr = mem2hex(&__debug_user_context->i.gr[loop], ptr, 4, 0);
temp = (unsigned long) __frame;
ptr = mem2hex(&temp, ptr, 4, 0);
- ptr = mem2hex((unsigned long *)__debug_frame + REG_GR(29), ptr, 4, 0);
- ptr = mem2hex((unsigned long *)__debug_frame + REG_GR(30), ptr, 4, 0);
+ ptr = mem2hex(&__debug_user_context->i.gr[29], ptr, 4, 0);
+ ptr = mem2hex(&__debug_user_context->i.gr[30], ptr, 4, 0);
#ifdef CONFIG_MMU
- ptr = mem2hex((unsigned long *)__debug_frame + REG_GR(31), ptr, 4, 0);
+ ptr = mem2hex(&__debug_user_context->i.gr[31], ptr, 4, 0);
#else
temp = (unsigned long) __debug_frame;
ptr = mem2hex(&temp, ptr, 4, 0);
#endif
for (loop = 32; loop <= 63; loop++)
- ptr = mem2hex((unsigned long *)__debug_frame + REG_GR(loop),
- ptr, 4, 0);
+ ptr = mem2hex(&__debug_user_context->i.gr[loop], ptr, 4, 0);
/* deal with FR0-FR63 */
for (loop = 0; loop <= 63; loop++)
- ptr = mem2hex((unsigned long *)&__break_user_context +
- __FPMEDIA_FR(loop),
- ptr, 4, 0);
+ ptr = mem2hex(&__debug_user_context->f.fr[loop], ptr, 4, 0);
/* deal with special registers */
ptr = mem2hex(&__debug_frame->pc, ptr, 4, 0);
@@ -1597,7 +1637,7 @@ void gdbstub(int sigval)
ptr = mem2hex(&zero, ptr, 4, 0);
ptr = mem2hex(&zero, ptr, 4, 0);
ptr = mem2hex(&__debug_frame->tbr, ptr, 4, 0);
- ptr = mem2hex(&__debug_regs->brr , ptr, 4, 0);
+ ptr = mem2hex(&__debug_status.brr , ptr, 4, 0);
asm volatile("movsg dbar0,%0" : "=r"(dbar));
ptr = mem2hex(&dbar, ptr, 4, 0);
@@ -1622,21 +1662,21 @@ void gdbstub(int sigval)
ptr = mem2hex(&__debug_frame->iacc0, ptr, 8, 0);
- ptr = mem2hex(&__break_user_context.f.fsr[0], ptr, 4, 0);
+ ptr = mem2hex(&__debug_user_context->f.fsr[0], ptr, 4, 0);
for (loop = 0; loop <= 7; loop++)
- ptr = mem2hex(&__break_user_context.f.acc[loop], ptr, 4, 0);
+ ptr = mem2hex(&__debug_user_context->f.acc[loop], ptr, 4, 0);
- ptr = mem2hex(&__break_user_context.f.accg, ptr, 8, 0);
+ ptr = mem2hex(&__debug_user_context->f.accg, ptr, 8, 0);
for (loop = 0; loop <= 1; loop++)
- ptr = mem2hex(&__break_user_context.f.msr[loop], ptr, 4, 0);
+ ptr = mem2hex(&__debug_user_context->f.msr[loop], ptr, 4, 0);
ptr = mem2hex(&__debug_frame->gner0, ptr, 4, 0);
ptr = mem2hex(&__debug_frame->gner1, ptr, 4, 0);
- ptr = mem2hex(&__break_user_context.f.fner[0], ptr, 4, 0);
- ptr = mem2hex(&__break_user_context.f.fner[1], ptr, 4, 0);
+ ptr = mem2hex(&__debug_user_context->f.fner[0], ptr, 4, 0);
+ ptr = mem2hex(&__debug_user_context->f.fner[1], ptr, 4, 0);
break;
@@ -1648,8 +1688,7 @@ void gdbstub(int sigval)
ptr = hex2mem(ptr, &temp, 4);
for (loop = 1; loop <= 27; loop++)
- ptr = hex2mem(ptr, (unsigned long *)__debug_frame + REG_GR(loop),
- 4);
+ ptr = hex2mem(ptr, &__debug_user_context->i.gr[loop], 4);
ptr = hex2mem(ptr, &temp, 4);
__frame = (struct pt_regs *) temp;
@@ -1662,14 +1701,11 @@ void gdbstub(int sigval)
#endif
for (loop = 32; loop <= 63; loop++)
- ptr = hex2mem(ptr, (unsigned long *)__debug_frame + REG_GR(loop),
- 4);
+ ptr = hex2mem(ptr, &__debug_user_context->i.gr[loop], 4);
/* deal with FR0-FR63 */
for (loop = 0; loop <= 63; loop++)
- ptr = mem2hex((unsigned long *)&__break_user_context +
- __FPMEDIA_FR(loop),
- ptr, 4, 0);
+ ptr = mem2hex(&__debug_user_context->f.fr[loop], ptr, 4, 0);
/* deal with special registers */
ptr = hex2mem(ptr, &__debug_frame->pc, 4);
@@ -1694,21 +1730,21 @@ void gdbstub(int sigval)
ptr = hex2mem(ptr, &__debug_frame->iacc0, 8);
- ptr = hex2mem(ptr, &__break_user_context.f.fsr[0], 4);
+ ptr = hex2mem(ptr, &__debug_user_context->f.fsr[0], 4);
for (loop = 0; loop <= 7; loop++)
- ptr = hex2mem(ptr, &__break_user_context.f.acc[loop], 4);
+ ptr = hex2mem(ptr, &__debug_user_context->f.acc[loop], 4);
- ptr = hex2mem(ptr, &__break_user_context.f.accg, 8);
+ ptr = hex2mem(ptr, &__debug_user_context->f.accg, 8);
for (loop = 0; loop <= 1; loop++)
- ptr = hex2mem(ptr, &__break_user_context.f.msr[loop], 4);
+ ptr = hex2mem(ptr, &__debug_user_context->f.msr[loop], 4);
ptr = hex2mem(ptr, &__debug_frame->gner0, 4);
ptr = hex2mem(ptr, &__debug_frame->gner1, 4);
- ptr = hex2mem(ptr, &__break_user_context.f.fner[0], 4);
- ptr = hex2mem(ptr, &__break_user_context.f.fner[1], 4);
+ ptr = hex2mem(ptr, &__debug_user_context->f.fner[0], 4);
+ ptr = hex2mem(ptr, &__debug_user_context->f.fner[1], 4);
gdbstub_strcpy(output_buffer,"OK");
break;
@@ -1752,6 +1788,12 @@ void gdbstub(int sigval)
flush_cache = 1;
break;
+ /* pNN: Read value of reg N and return it */
+ case 'p':
+ /* return no value, indicating that we don't support
+ * this command and that gdb should use 'g' instead */
+ break;
+
/* PNN,=RRRRRRRR: Write value R to reg N return OK */
case 'P':
ptr = &input_buffer[1];
@@ -1769,52 +1811,52 @@ void gdbstub(int sigval)
case GDB_REG_GR(0):
break;
case GDB_REG_GR(1) ... GDB_REG_GR(63):
- __break_user_context.i.gr[addr - GDB_REG_GR(0)] = temp;
+ __debug_user_context->i.gr[addr - GDB_REG_GR(0)] = temp;
break;
case GDB_REG_FR(0) ... GDB_REG_FR(63):
- __break_user_context.f.fr[addr - GDB_REG_FR(0)] = temp;
+ __debug_user_context->f.fr[addr - GDB_REG_FR(0)] = temp;
break;
case GDB_REG_PC:
- __break_user_context.i.pc = temp;
+ __debug_user_context->i.pc = temp;
break;
case GDB_REG_PSR:
- __break_user_context.i.psr = temp;
+ __debug_user_context->i.psr = temp;
break;
case GDB_REG_CCR:
- __break_user_context.i.ccr = temp;
+ __debug_user_context->i.ccr = temp;
break;
case GDB_REG_CCCR:
- __break_user_context.i.cccr = temp;
+ __debug_user_context->i.cccr = temp;
break;
case GDB_REG_BRR:
- __debug_regs->brr = temp;
+ __debug_status.brr = temp;
break;
case GDB_REG_LR:
- __break_user_context.i.lr = temp;
+ __debug_user_context->i.lr = temp;
break;
case GDB_REG_LCR:
- __break_user_context.i.lcr = temp;
+ __debug_user_context->i.lcr = temp;
break;
case GDB_REG_FSR0:
- __break_user_context.f.fsr[0] = temp;
+ __debug_user_context->f.fsr[0] = temp;
break;
case GDB_REG_ACC(0) ... GDB_REG_ACC(7):
- __break_user_context.f.acc[addr - GDB_REG_ACC(0)] = temp;
+ __debug_user_context->f.acc[addr - GDB_REG_ACC(0)] = temp;
break;
case GDB_REG_ACCG(0):
- *(uint32_t *) &__break_user_context.f.accg[0] = temp;
+ *(uint32_t *) &__debug_user_context->f.accg[0] = temp;
break;
case GDB_REG_ACCG(4):
- *(uint32_t *) &__break_user_context.f.accg[4] = temp;
+ *(uint32_t *) &__debug_user_context->f.accg[4] = temp;
break;
case GDB_REG_MSR(0) ... GDB_REG_MSR(1):
- __break_user_context.f.msr[addr - GDB_REG_MSR(0)] = temp;
+ __debug_user_context->f.msr[addr - GDB_REG_MSR(0)] = temp;
break;
case GDB_REG_GNER(0) ... GDB_REG_GNER(1):
- __break_user_context.i.gner[addr - GDB_REG_GNER(0)] = temp;
+ __debug_user_context->i.gner[addr - GDB_REG_GNER(0)] = temp;
break;
case GDB_REG_FNER(0) ... GDB_REG_FNER(1):
- __break_user_context.f.fner[addr - GDB_REG_FNER(0)] = temp;
+ __debug_user_context->f.fner[addr - GDB_REG_FNER(0)] = temp;
break;
default:
temp2 = 0;
@@ -1841,6 +1883,10 @@ void gdbstub(int sigval)
case 'k' :
goto done; /* just continue */
+ /* detach */
+ case 'D':
+ gdbstub_strcpy(output_buffer, "OK");
+ break;
/* reset the whole machine (FIXME: system dependent) */
case 'r':
@@ -1850,8 +1896,17 @@ void gdbstub(int sigval)
/* step to next instruction */
case 's':
__debug_regs->dcr |= DCR_SE;
+ __debug_status.dcr |= DCR_SE;
goto done;
+ /* extended command */
+ case 'v':
+ if (strcmp(input_buffer, "vCont?") == 0) {
+ output_buffer[0] = 0;
+ break;
+ }
+ goto unsupported_cmd;
+
/* set baud rate (bBB) */
case 'b':
ptr = &input_buffer[1];
@@ -1923,8 +1978,19 @@ void gdbstub(int sigval)
gdbstub_strcpy(output_buffer,"OK");
break;
+ /* Thread-setting packet */
+ case 'H':
+ gdbstub_strcpy(output_buffer, "OK");
+ break;
+
+ case 'q':
+ gdbstub_handle_query();
+ break;
+
default:
+ unsupported_cmd:
gdbstub_proto("### GDB Unsupported Cmd '%s'\n",input_buffer);
+ gdbstub_strcpy(output_buffer,"E01");
break;
}
@@ -1934,7 +2000,7 @@ void gdbstub(int sigval)
}
done:
- restore_user_regs(&__break_user_context);
+ restore_user_regs(&__debug_frame0->uc);
//gdbstub_dump_debugregs();
//gdbstub_printk("<-- gdbstub() %08x\n", __debug_frame->pc);
@@ -1966,7 +2032,6 @@ void __init gdbstub_init(void)
#endif
gdbstub_printk("%s", gdbstub_banner);
- gdbstub_printk("DCR: %x\n", __debug_regs->dcr);
gdbstub_io_init();
@@ -2000,7 +2065,7 @@ void __init gdbstub_init(void)
ptr = mem2hex(gdbstub_banner, ptr, sizeof(gdbstub_banner) - 1, 0);
gdbstub_send_packet(output_buffer);
#endif
-#if defined(CONFIG_GDBSTUB_CONSOLE) && defined(CONFIG_GDBSTUB_IMMEDIATE)
+#if defined(CONFIG_GDB_CONSOLE) && defined(CONFIG_GDBSTUB_IMMEDIATE)
register_console(&gdbstub_console);
#endif
@@ -2010,7 +2075,7 @@ void __init gdbstub_init(void)
/*
* register the console at a more appropriate time
*/
-#if defined (CONFIG_GDBSTUB_CONSOLE) && !defined(CONFIG_GDBSTUB_IMMEDIATE)
+#if defined (CONFIG_GDB_CONSOLE) && !defined(CONFIG_GDBSTUB_IMMEDIATE)
static int __init gdbstub_postinit(void)
{
printk("registering console\n");
@@ -2044,8 +2109,8 @@ void gdbstub_exit(int status)
}
gdbstub_tx_char('#');
- gdbstub_tx_char(hexchars[checksum >> 4]);
- gdbstub_tx_char(hexchars[checksum & 0xf]);
+ gdbstub_tx_char(hex_asc_hi(checksum));
+ gdbstub_tx_char(hex_asc_lo(checksum));
/* make sure the output is flushed, or else RedBoot might clobber it */
gdbstub_tx_char('-');
@@ -2058,25 +2123,25 @@ void gdbstub_exit(int status)
* GDB wants to call malloc() and free() to allocate memory for calling kernel
* functions directly from its command line
*/
-static void *malloc(size_t size) __attribute__((unused));
+static void *malloc(size_t size) __maybe_unused;
static void *malloc(size_t size)
{
return kmalloc(size, GFP_ATOMIC);
}
-static void free(void *p) __attribute__((unused));
+static void free(void *p) __maybe_unused;
static void free(void *p)
{
kfree(p);
}
-static uint32_t ___get_HSR0(void) __attribute__((unused));
+static uint32_t ___get_HSR0(void) __maybe_unused;
static uint32_t ___get_HSR0(void)
{
return __get_HSR(0);
}
-static uint32_t ___set_HSR0(uint32_t x) __attribute__((unused));
+static uint32_t ___set_HSR0(uint32_t x) __maybe_unused;
static uint32_t ___set_HSR0(uint32_t x)
{
__set_HSR(0, x);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 23:38:46 +0000