diff options
Diffstat (limited to 'arch/mn10300/include')
| -rw-r--r-- | arch/mn10300/include/asm/debugger.h | 43 | ||||
| -rw-r--r-- | arch/mn10300/include/asm/div64.h | 21 | ||||
| -rw-r--r-- | arch/mn10300/include/asm/fpu.h | 2 | ||||
| -rw-r--r-- | arch/mn10300/include/asm/irqflags.h | 2 | ||||
| -rw-r--r-- | arch/mn10300/include/asm/kgdb.h | 81 | ||||
| -rw-r--r-- | arch/mn10300/include/asm/smp.h | 6 | ||||
| -rw-r--r-- | arch/mn10300/include/asm/thread_info.h | 4 |
7 files changed, 150 insertions, 9 deletions
diff --git a/arch/mn10300/include/asm/debugger.h b/arch/mn10300/include/asm/debugger.h new file mode 100644 index 00000000000..e1d3b083696 --- /dev/null +++ b/arch/mn10300/include/asm/debugger.h @@ -0,0 +1,43 @@ +/* Kernel debugger for MN10300 + * + * Copyright (C) 2011 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#ifndef _ASM_DEBUGGER_H +#define _ASM_DEBUGGER_H + +#if defined(CONFIG_KERNEL_DEBUGGER) + +extern int debugger_intercept(enum exception_code, int, int, struct pt_regs *); +extern int at_debugger_breakpoint(struct pt_regs *); + +#ifndef CONFIG_MN10300_DEBUGGER_CACHE_NO_FLUSH +extern void debugger_local_cache_flushinv(void); +extern void debugger_local_cache_flushinv_one(u8 *); +#else +static inline void debugger_local_cache_flushinv(void) {} +static inline void debugger_local_cache_flushinv_one(u8 *addr) {} +#endif + +#else /* CONFIG_KERNEL_DEBUGGER */ + +static inline int debugger_intercept(enum exception_code excep, + int signo, int si_code, + struct pt_regs *regs) +{ + return 0; +} + +static inline int at_debugger_breakpoint(struct pt_regs *regs) +{ + return 0; +} + +#endif /* CONFIG_KERNEL_DEBUGGER */ +#endif /* _ASM_DEBUGGER_H */ diff --git a/arch/mn10300/include/asm/div64.h b/arch/mn10300/include/asm/div64.h index 34dcb8e6830..503efab2a51 100644 --- a/arch/mn10300/include/asm/div64.h +++ b/arch/mn10300/include/asm/div64.h @@ -16,6 +16,19 @@ extern void ____unhandled_size_in_do_div___(void); /* + * Beginning with gcc 4.6, the MDR register is represented explicitly. We + * must, therefore, at least explicitly clobber the register when we make + * changes to it. The following assembly fragments *could* be rearranged in + * order to leave the moves to/from the MDR register to the compiler, but the + * gains would be minimal at best. + */ +#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6) +# define CLOBBER_MDR_CC "mdr", "cc" +#else +# define CLOBBER_MDR_CC "cc" +#endif + +/* * divide n by base, leaving the result in n and returning the remainder * - we can do this quite efficiently on the MN10300 by cascading the divides * through the MDR register @@ -29,7 +42,7 @@ extern void ____unhandled_size_in_do_div___(void); "mov mdr,%1 \n" \ : "+r"(n), "=d"(__rem) \ : "r"(base), "1"(__rem) \ - : "cc" \ + : CLOBBER_MDR_CC \ ); \ } else if (sizeof(n) <= 8) { \ union { \ @@ -48,7 +61,7 @@ extern void ____unhandled_size_in_do_div___(void); : "=d"(__rem), "=r"(__quot.w[1]), "=r"(__quot.w[0]) \ : "r"(base), "0"(__rem), "1"(__quot.w[1]), \ "2"(__quot.w[0]) \ - : "cc" \ + : CLOBBER_MDR_CC \ ); \ n = __quot.l; \ } else { \ @@ -72,7 +85,7 @@ unsigned __muldiv64u(unsigned val, unsigned mult, unsigned div) * MDR = MDR:val%div */ : "=r"(result) : "0"(val), "ir"(mult), "r"(div) - : "cc" + : CLOBBER_MDR_CC ); return result; @@ -93,7 +106,7 @@ signed __muldiv64s(signed val, signed mult, signed div) * MDR = MDR:val%div */ : "=r"(result) : "0"(val), "ir"(mult), "r"(div) - : "cc" + : CLOBBER_MDR_CC ); return result; diff --git a/arch/mn10300/include/asm/fpu.h b/arch/mn10300/include/asm/fpu.h index b7625de8ead..738ff72659d 100644 --- a/arch/mn10300/include/asm/fpu.h +++ b/arch/mn10300/include/asm/fpu.h @@ -55,7 +55,6 @@ static inline void clear_using_fpu(struct task_struct *tsk) extern asmlinkage void fpu_kill_state(struct task_struct *); extern asmlinkage void fpu_exception(struct pt_regs *, enum exception_code); -extern asmlinkage void fpu_invalid_op(struct pt_regs *, enum exception_code); extern asmlinkage void fpu_init_state(void); extern asmlinkage void fpu_save(struct fpu_state_struct *); extern int fpu_setup_sigcontext(struct fpucontext *buf); @@ -113,7 +112,6 @@ static inline void flush_fpu(void) extern asmlinkage void unexpected_fpu_exception(struct pt_regs *, enum exception_code); -#define fpu_invalid_op unexpected_fpu_exception #define fpu_exception unexpected_fpu_exception struct task_struct; diff --git a/arch/mn10300/include/asm/irqflags.h b/arch/mn10300/include/asm/irqflags.h index 7a7ae12c711..678f68d5f37 100644 --- a/arch/mn10300/include/asm/irqflags.h +++ b/arch/mn10300/include/asm/irqflags.h @@ -20,7 +20,7 @@ /* * interrupt control * - "disabled": run in IM1/2 - * - level 0 - GDB stub + * - level 0 - kernel debugger * - level 1 - virtual serial DMA (if present) * - level 5 - normal interrupt priority * - level 6 - timer interrupt diff --git a/arch/mn10300/include/asm/kgdb.h b/arch/mn10300/include/asm/kgdb.h new file mode 100644 index 00000000000..eb245f18a70 --- /dev/null +++ b/arch/mn10300/include/asm/kgdb.h @@ -0,0 +1,81 @@ +/* Kernel debugger for MN10300 + * + * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#ifndef _ASM_KGDB_H +#define _ASM_KGDB_H + +/* + * BUFMAX defines the maximum number of characters in inbound/outbound + * buffers at least NUMREGBYTES*2 are needed for register packets + * Longer buffer is needed to list all threads + */ +#define BUFMAX 1024 + +/* + * Note that this register image is in a different order than the register + * image that Linux produces at interrupt time. + */ +enum regnames { + GDB_FR_D0 = 0, + GDB_FR_D1 = 1, + GDB_FR_D2 = 2, + GDB_FR_D3 = 3, + GDB_FR_A0 = 4, + GDB_FR_A1 = 5, + GDB_FR_A2 = 6, + GDB_FR_A3 = 7, + + GDB_FR_SP = 8, + GDB_FR_PC = 9, + GDB_FR_MDR = 10, + GDB_FR_EPSW = 11, + GDB_FR_LIR = 12, + GDB_FR_LAR = 13, + GDB_FR_MDRQ = 14, + + GDB_FR_E0 = 15, + GDB_FR_E1 = 16, + GDB_FR_E2 = 17, + GDB_FR_E3 = 18, + GDB_FR_E4 = 19, + GDB_FR_E5 = 20, + GDB_FR_E6 = 21, + GDB_FR_E7 = 22, + + GDB_FR_SSP = 23, + GDB_FR_MSP = 24, + GDB_FR_USP = 25, + GDB_FR_MCRH = 26, + GDB_FR_MCRL = 27, + GDB_FR_MCVF = 28, + + GDB_FR_FPCR = 29, + GDB_FR_DUMMY0 = 30, + GDB_FR_DUMMY1 = 31, + + GDB_FR_FS0 = 32, + + GDB_FR_SIZE = 64, +}; + +#define GDB_ORIG_D0 41 +#define NUMREGBYTES (GDB_FR_SIZE*4) + +static inline void arch_kgdb_breakpoint(void) +{ + asm(".globl __arch_kgdb_breakpoint; __arch_kgdb_breakpoint: break"); +} +extern u8 __arch_kgdb_breakpoint; + +#define BREAK_INSTR_SIZE 1 +#define CACHE_FLUSH_IS_SAFE 1 + +#endif /* _ASM_KGDB_H */ diff --git a/arch/mn10300/include/asm/smp.h b/arch/mn10300/include/asm/smp.h index a3930e43a95..6745dbe6494 100644 --- a/arch/mn10300/include/asm/smp.h +++ b/arch/mn10300/include/asm/smp.h @@ -34,7 +34,7 @@ #define LOCAL_TIMER_IPI 193 #define FLUSH_CACHE_IPI 194 #define CALL_FUNCTION_NMI_IPI 195 -#define GDB_NMI_IPI 196 +#define DEBUGGER_NMI_IPI 196 #define SMP_BOOT_IRQ 195 @@ -43,6 +43,7 @@ #define LOCAL_TIMER_GxICR_LV GxICR_LEVEL_4 #define FLUSH_CACHE_GxICR_LV GxICR_LEVEL_0 #define SMP_BOOT_GxICR_LV GxICR_LEVEL_0 +#define DEBUGGER_GxICR_LV CONFIG_DEBUGGER_IRQ_LEVEL #define TIME_OUT_COUNT_BOOT_IPI 100 #define DELAY_TIME_BOOT_IPI 75000 @@ -61,8 +62,9 @@ * An alternate way of dealing with this could be to use the EPSW.S bits to * cache this information for systems with up to four CPUs. */ +#define arch_smp_processor_id() (CPUID) #if 0 -#define raw_smp_processor_id() (CPUID) +#define raw_smp_processor_id() (arch_smp_processor_id()) #else #define raw_smp_processor_id() (current_thread_info()->cpu) #endif diff --git a/arch/mn10300/include/asm/thread_info.h b/arch/mn10300/include/asm/thread_info.h index 8d53f09c878..87c213002d4 100644 --- a/arch/mn10300/include/asm/thread_info.h +++ b/arch/mn10300/include/asm/thread_info.h @@ -131,7 +131,11 @@ static inline unsigned long current_stack_pointer(void) kmalloc_node(THREAD_SIZE, GFP_KERNEL, node) #endif +#ifndef CONFIG_KGDB #define free_thread_info(ti) kfree((ti)) +#else +extern void free_thread_info(struct thread_info *); +#endif #define get_thread_info(ti) get_task_struct((ti)->task) #define put_thread_info(ti) put_task_struct((ti)->task) |