From 84e8cd6dbc00b4979e8d1c15c80d91987aeb3417 Mon Sep 17 00:00:00 2001 From: David Howells Date: Mon, 10 Jul 2006 04:44:55 -0700 Subject: [PATCH] FRV: Introduce asm-offsets for FRV arch Introduce the use of asm-offsets into the FRV architecture. Signed-off-by: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/frv/kernel/gdb-stub.c | 159 +++++++++++++++++++++++++-------------------- 1 file changed, 90 insertions(+), 69 deletions(-) (limited to 'arch/frv/kernel/gdb-stub.c') diff --git a/arch/frv/kernel/gdb-stub.c b/arch/frv/kernel/gdb-stub.c index 508601fad079..9550f37fb62c 100644 --- a/arch/frv/kernel/gdb-stub.c +++ b/arch/frv/kernel/gdb-stub.c @@ -124,6 +124,7 @@ #include #include +#include #include #include #include @@ -136,7 +137,6 @@ 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; @@ -926,6 +926,7 @@ 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 +934,7 @@ 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 +942,7 @@ 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 +950,7 @@ 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 +975,14 @@ 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 +995,14 @@ 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 +1065,7 @@ 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 +1073,7 @@ 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 +1081,7 @@ 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 +1089,7 @@ 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 +1126,12 @@ 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 +1151,12 @@ 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" @@ -1163,7 +1197,7 @@ static void gdbstub_check_breakpoint(void) */ static void __attribute__((unused)) gdbstub_show_regs(void) { - uint32_t *reg; + unsigned long *reg; int loop; gdbstub_printk("\n"); @@ -1172,11 +1206,11 @@ 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(" | "); @@ -1191,13 +1225,8 @@ static void __attribute__((unused)) gdbstub_show_regs(void) */ static void __attribute__((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)); @@ -1360,7 +1389,7 @@ 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 +1418,8 @@ 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 +1433,15 @@ 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; + __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 +1460,7 @@ void gdbstub(int sigval) } if (!sigval) - sigval = gdbstub_compute_signal(__debug_regs->brr); + sigval = gdbstub_compute_signal(__debug_status.brr); LEDS(0x5004); @@ -1441,7 +1470,7 @@ 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; @@ -1565,28 +1594,24 @@ 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 +1622,7 @@ 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 +1647,21 @@ 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 +1673,7 @@ 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 +1686,11 @@ 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 +1715,21 @@ 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; @@ -1769,52 +1790,52 @@ 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; @@ -1850,6 +1871,7 @@ void gdbstub(int sigval) /* step to next instruction */ case 's': __debug_regs->dcr |= DCR_SE; + __debug_status.dcr |= DCR_SE; goto done; /* set baud rate (bBB) */ @@ -1934,7 +1956,7 @@ 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 +1988,6 @@ void __init gdbstub_init(void) #endif gdbstub_printk("%s", gdbstub_banner); - gdbstub_printk("DCR: %x\n", __debug_regs->dcr); gdbstub_io_init(); -- cgit v1.2.3