diff options
Diffstat (limited to 'arch/h8300')
32 files changed, 1605 insertions, 0 deletions
diff --git a/arch/h8300/include/asm/Kbuild b/arch/h8300/include/asm/Kbuild new file mode 100644 index 000000000000..00379d64f707 --- /dev/null +++ b/arch/h8300/include/asm/Kbuild @@ -0,0 +1,75 @@ +generic-y += asm-offsets.h +generic-y += auxvec.h +generic-y += barrier.h +generic-y += bugs.h +generic-y += cacheflush.h +generic-y += checksum.h +generic-y += clkdev.h +generic-y += cputime.h +generic-y += current.h +generic-y += delay.h +generic-y += device.h +generic-y += div64.h +generic-y += dma.h +generic-y += emergency-restart.h +generic-y += errno.h +generic-y += exec.h +generic-y += fb.h +generic-y += fcntl.h +generic-y += ftrace.h +generic-y += futex.h +generic-y += hardirq.h +generic-y += hash.h +generic-y += hw_irq.h +generic-y += ioctl.h +generic-y += ioctls.h +generic-y += ipcbuf.h +generic-y += irq_regs.h +generic-y += irq_work.h +generic-y += kdebug.h +generic-y += kmap_types.h +generic-y += kvm_para.h +generic-y += linkage.h +generic-y += local.h +generic-y += local64.h +generic-y += mcs_spinlock.h +generic-y += mman.h +generic-y += mmu.h +generic-y += mmu_context.h +generic-y += module.h +generic-y += msgbuf.h +generic-y += param.h +generic-y += parport.h +generic-y += percpu.h +generic-y += pgalloc.h +generic-y += poll.h +generic-y += posix_types.h +generic-y += preempt.h +generic-y += resource.h +generic-y += scatterlist.h +generic-y += sections.h +generic-y += sembuf.h +generic-y += serial.h +generic-y += setup.h +generic-y += shmbuf.h +generic-y += shmparam.h +generic-y += siginfo.h +generic-y += sizes.h +generic-y += socket.h +generic-y += sockios.h +generic-y += spinlock.h +generic-y += stat.h +generic-y += statfs.h +generic-y += swab.h +generic-y += termbits.h +generic-y += termios.h +generic-y += timex.h +generic-y += tlbflush.h +generic-y += trace_clock.h +generic-y += topology.h +generic-y += types.h +generic-y += uaccess.h +generic-y += ucontext.h +generic-y += unaligned.h +generic-y += vga.h +generic-y += xor.h diff --git a/arch/h8300/include/asm/atomic.h b/arch/h8300/include/asm/atomic.h new file mode 100644 index 000000000000..7ca73f8546cc --- /dev/null +++ b/arch/h8300/include/asm/atomic.h @@ -0,0 +1,159 @@ +#ifndef __ARCH_H8300_ATOMIC__ +#define __ARCH_H8300_ATOMIC__ + +#include <linux/types.h> +#include <asm/cmpxchg.h> + +/* + * Atomic operations that C can't guarantee us. Useful for + * resource counting etc.. + */ + +#define ATOMIC_INIT(i) { (i) } + +#define atomic_read(v) ACCESS_ONCE((v)->counter) +#define atomic_set(v, i) (((v)->counter) = i) + +#include <linux/kernel.h> + +static inline int atomic_add_return(int i, atomic_t *v) +{ + h8300flags flags; + int ret; + + flags = arch_local_irq_save(); + ret = v->counter += i; + arch_local_irq_restore(flags); + return ret; +} + +#define atomic_add(i, v) atomic_add_return(i, v) +#define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0) + +static inline int atomic_sub_return(int i, atomic_t *v) +{ + h8300flags flags; + int ret; + + flags = arch_local_irq_save(); + ret = v->counter -= i; + arch_local_irq_restore(flags); + return ret; +} + +#define atomic_sub(i, v) atomic_sub_return(i, v) +#define atomic_sub_and_test(i, v) (atomic_sub_return(i, v) == 0) + +static inline int atomic_inc_return(atomic_t *v) +{ + h8300flags flags; + int ret; + + flags = arch_local_irq_save(); + v->counter++; + ret = v->counter; + arch_local_irq_restore(flags); + return ret; +} + +#define atomic_inc(v) atomic_inc_return(v) + +/* + * atomic_inc_and_test - increment and test + * @v: pointer of type atomic_t + * + * Atomically increments @v by 1 + * and returns true if the result is zero, or false for all + * other cases. + */ +#define atomic_inc_and_test(v) (atomic_inc_return(v) == 0) + +static inline int atomic_dec_return(atomic_t *v) +{ + h8300flags flags; + int ret; + + flags = arch_local_irq_save(); + --v->counter; + ret = v->counter; + arch_local_irq_restore(flags); + return ret; +} + +#define atomic_dec(v) atomic_dec_return(v) + +static inline int atomic_dec_and_test(atomic_t *v) +{ + h8300flags flags; + int ret; + + flags = arch_local_irq_save(); + --v->counter; + ret = v->counter; + arch_local_irq_restore(flags); + return ret == 0; +} + +static inline int atomic_cmpxchg(atomic_t *v, int old, int new) +{ + int ret; + h8300flags flags; + + flags = arch_local_irq_save(); + ret = v->counter; + if (likely(ret == old)) + v->counter = new; + arch_local_irq_restore(flags); + return ret; +} + +static inline int __atomic_add_unless(atomic_t *v, int a, int u) +{ + int ret; + h8300flags flags; + + flags = arch_local_irq_save(); + ret = v->counter; + if (ret != u) + v->counter += a; + arch_local_irq_restore(flags); + return ret; +} + +static inline void atomic_clear_mask(unsigned long mask, unsigned long *v) +{ + unsigned char ccr; + unsigned long tmp; + + __asm__ __volatile__("stc ccr,%w3\n\t" + "orc #0x80,ccr\n\t" + "mov.l %0,%1\n\t" + "and.l %2,%1\n\t" + "mov.l %1,%0\n\t" + "ldc %w3,ccr" + : "=m"(*v), "=r"(tmp) + : "g"(~(mask)), "r"(ccr)); +} + +static inline void atomic_set_mask(unsigned long mask, unsigned long *v) +{ + unsigned char ccr; + unsigned long tmp; + + __asm__ __volatile__("stc ccr,%w3\n\t" + "orc #0x80,ccr\n\t" + "mov.l %0,%1\n\t" + "or.l %2,%1\n\t" + "mov.l %1,%0\n\t" + "ldc %w3,ccr" + : "=m"(*v), "=r"(tmp) + : "g"(~(mask)), "r"(ccr)); +} + +/* Atomic operations are already serializing */ +#define smp_mb__before_atomic_dec() barrier() +#define smp_mb__after_atomic_dec() barrier() +#define smp_mb__before_atomic_inc() barrier() +#define smp_mb__after_atomic_inc() barrier() + +#endif /* __ARCH_H8300_ATOMIC __ */ diff --git a/arch/h8300/include/asm/bitops.h b/arch/h8300/include/asm/bitops.h new file mode 100644 index 000000000000..05999aba1d6a --- /dev/null +++ b/arch/h8300/include/asm/bitops.h @@ -0,0 +1,185 @@ +#ifndef _H8300_BITOPS_H +#define _H8300_BITOPS_H + +/* + * Copyright 1992, Linus Torvalds. + * Copyright 2002, Yoshinori Sato + */ + +#include <linux/compiler.h> + +#ifdef __KERNEL__ + +#ifndef _LINUX_BITOPS_H +#error only <linux/bitops.h> can be included directly +#endif + +/* + * Function prototypes to keep gcc -Wall happy + */ + +/* + * ffz = Find First Zero in word. Undefined if no zero exists, + * so code should check against ~0UL first.. + */ +static inline unsigned long ffz(unsigned long word) +{ + unsigned long result; + + result = -1; + __asm__("1:\n\t" + "shlr.l %2\n\t" + "adds #1,%0\n\t" + "bcs 1b" + : "=r"(result) + : "0"(result), "r"(word)); + return result; +} + +#define H8300_GEN_BITOP(FNAME, OP) \ +static inline void FNAME(int nr, volatile unsigned long *addr) \ +{ \ + unsigned char *b_addr; \ + unsigned char bit = nr & 7; \ + \ + b_addr = (unsigned char *)addr + ((nr >> 3) ^ 3); \ + if (__builtin_constant_p(nr)) { \ + __asm__(OP " %1,%0" : "+WU"(*b_addr) : "i"(nr & 7)); \ + } else { \ + __asm__(OP " %s1,%0" : "+WU"(*b_addr) : "r"(bit)); \ + } \ +} + +/* + * clear_bit() doesn't provide any barrier for the compiler. + */ +#define smp_mb__before_clear_bit() barrier() +#define smp_mb__after_clear_bit() barrier() + +H8300_GEN_BITOP(set_bit, "bset") +H8300_GEN_BITOP(clear_bit, "bclr") +H8300_GEN_BITOP(change_bit, "bnot") +#define __set_bit(nr, addr) set_bit((nr), (addr)) +#define __clear_bit(nr, addr) clear_bit((nr), (addr)) +#define __change_bit(nr, addr) change_bit((nr), (addr)) + +#undef H8300_GEN_BITOP + +static inline int test_bit(int nr, const unsigned long *addr) +{ + int ret = 0; + unsigned char *b_addr; + unsigned char bit = nr & 7; + + b_addr = (unsigned char *)addr + ((nr >> 3) ^ 3); + if (__builtin_constant_p(nr)) { + __asm__("bld %Z2,%1\n\t" + "rotxl %0\n\t" + : "=r"(ret) + : "WU"(*b_addr), "i"(nr & 7), "0"(ret) : "cc"); + } else { + __asm__("btst %w2,%1\n\t" + "beq 1f\n\t" + "inc.l #1,%0\n" + "1:" + : "=r"(ret) + : "WU"(*b_addr), "r"(bit), "0"(ret) : "cc"); + } + return ret; +} + +#define __test_bit(nr, addr) test_bit(nr, addr) + +#define H8300_GEN_TEST_BITOP(FNNAME, OP) \ +static inline int FNNAME(int nr, void *addr) \ +{ \ + int retval = 0; \ + char ccrsave; \ + unsigned char *b_addr; \ + unsigned char bit = nr & 7; \ + \ + b_addr = (unsigned char *)addr + ((nr >> 3) ^ 3); \ + if (__builtin_constant_p(nr)) { \ + __asm__("stc ccr,%s2\n\t" \ + "orc #0x80,ccr\n\t" \ + "bld %4,%1\n\t" \ + OP " %4,%1\n\t" \ + "rotxl.l %0\n\t" \ + "ldc %s2,ccr" \ + : "=r"(retval), "+WU" (*b_addr), "=&r"(ccrsave) \ + : "0"(retval), "i"(nr & 7) : "cc"); \ + } else { \ + __asm__("stc ccr,%t3\n\t" \ + "orc #0x80,ccr\n\t" \ + "btst %s3,%1\n\t" \ + OP " %s3,%1\n\t" \ + "beq 1f\n\t" \ + "inc.l #1,%0\n\t" \ + "1:\n" \ + "ldc %t3,ccr" \ + : "=r"(retval), "+WU" (*b_addr) \ + : "0" (retval), "r"(bit) : "cc"); \ + } \ + return retval; \ +} \ + \ +static inline int __ ## FNNAME(int nr, void *addr) \ +{ \ + int retval = 0; \ + unsigned char *b_addr; \ + unsigned char bit = nr & 7; \ + \ + b_addr = (unsigned char *)addr + ((nr >> 3) ^ 3); \ + if (__builtin_constant_p(nr)) { \ + __asm__("bld %3,%1\n\t" \ + OP " %3,%1\n\t" \ + "rotxl.l %0\n\t" \ + : "=r"(retval), "+WU"(*b_addr) \ + : "0" (retval), "i"(nr & 7)); \ + } else { \ + __asm__("btst %s3,%1\n\t" \ + OP " %s3,%1\n\t" \ + "beq 1f\n\t" \ + "inc.l #1,%0\n\t" \ + "1:" \ + : "=r"(retval), "+WU"(*b_addr) \ + : "0" (retval), "r"(bit)); \ + } \ + return retval; \ +} + +H8300_GEN_TEST_BITOP(test_and_set_bit, "bset") +H8300_GEN_TEST_BITOP(test_and_clear_bit, "bclr") +H8300_GEN_TEST_BITOP(test_and_change_bit, "bnot") +#undef H8300_GEN_TEST_BITOP + +#include <asm-generic/bitops/ffs.h> + +static inline unsigned long __ffs(unsigned long word) +{ + unsigned long result; + + result = -1; + __asm__("1:\n\t" + "shlr.l %2\n\t" + "adds #1,%0\n\t" + "bcc 1b" + : "=r" (result) + : "0"(result), "r"(word)); + return result; +} + +#include <asm-generic/bitops/find.h> +#include <asm-generic/bitops/sched.h> +#include <asm-generic/bitops/hweight.h> +#include <asm-generic/bitops/lock.h> +#include <asm-generic/bitops/le.h> +#include <asm-generic/bitops/ext2-atomic.h> + +#endif /* __KERNEL__ */ + +#include <asm-generic/bitops/fls.h> +#include <asm-generic/bitops/__fls.h> +#include <asm-generic/bitops/fls64.h> + +#endif /* _H8300_BITOPS_H */ diff --git a/arch/h8300/include/asm/bitsperlong.h b/arch/h8300/include/asm/bitsperlong.h new file mode 100644 index 000000000000..e140e46729ac --- /dev/null +++ b/arch/h8300/include/asm/bitsperlong.h @@ -0,0 +1,14 @@ +#ifndef __ASM_H8300_BITS_PER_LONG +#define __ASM_H8300_BITS_PER_LONG + +#include <asm-generic/bitsperlong.h> + +#if !defined(__ASSEMBLY__) +/* h8300-unknown-linux required long */ +#define __kernel_size_t __kernel_size_t +typedef unsigned long __kernel_size_t; +typedef long __kernel_ssize_t; +typedef long __kernel_ptrdiff_t; +#endif + +#endif /* __ASM_H8300_BITS_PER_LONG */ diff --git a/arch/h8300/include/asm/bug.h b/arch/h8300/include/asm/bug.h new file mode 100644 index 000000000000..1e1be8119935 --- /dev/null +++ b/arch/h8300/include/asm/bug.h @@ -0,0 +1,12 @@ +#ifndef _H8300_BUG_H +#define _H8300_BUG_H + +/* always true */ +#define is_valid_bugaddr(addr) (1) + +#include <asm-generic/bug.h> + +struct pt_regs; +extern void die(const char *str, struct pt_regs *fp, unsigned long err); + +#endif diff --git a/arch/h8300/include/asm/byteorder.h b/arch/h8300/include/asm/byteorder.h new file mode 100644 index 000000000000..888478a38145 --- /dev/null +++ b/arch/h8300/include/asm/byteorder.h @@ -0,0 +1,7 @@ +#ifndef __H8300_BYTEORDER_H__ +#define __H8300_BYTEORDER_H__ + +#define __BIG_ENDIAN __ORDER_BIG_ENDIAN__ +#include <linux/byteorder/big_endian.h> + +#endif diff --git a/arch/h8300/include/asm/cache.h b/arch/h8300/include/asm/cache.h new file mode 100644 index 000000000000..0ef1edc5a6a6 --- /dev/null +++ b/arch/h8300/include/asm/cache.h @@ -0,0 +1,11 @@ +#ifndef __ARCH_H8300_CACHE_H +#define __ARCH_H8300_CACHE_H + +/* bytes per L1 cache line */ +#define L1_CACHE_SHIFT 2 +#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) + +#define __cacheline_aligned +#define ____cacheline_aligned + +#endif diff --git a/arch/h8300/include/asm/cmpxchg.h b/arch/h8300/include/asm/cmpxchg.h new file mode 100644 index 000000000000..95fec4cd1081 --- /dev/null +++ b/arch/h8300/include/asm/cmpxchg.h @@ -0,0 +1,65 @@ +#ifndef __ARCH_H8300_CMPXCHG__ +#define __ARCH_H8300_CMPXCHG__ + +#include <linux/irqflags.h> + +#define xchg(ptr, x) \ + ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), \ + sizeof(*(ptr)))) + +struct __xchg_dummy { unsigned long a[100]; }; +#define __xg(x) ((volatile struct __xchg_dummy *)(x)) + +static inline unsigned long __xchg(unsigned long x, + volatile void *ptr, int size) +{ + unsigned long tmp, flags; + + local_irq_save(flags); + + switch (size) { + case 1: + __asm__ __volatile__ + ("mov.b %2,%0\n\t" + "mov.b %1,%2" + : "=&r" (tmp) : "r" (x), "m" (*__xg(ptr))); + break; + case 2: + __asm__ __volatile__ + ("mov.w %2,%0\n\t" + "mov.w %1,%2" + : "=&r" (tmp) : "r" (x), "m" (*__xg(ptr))); + break; + case 4: + __asm__ __volatile__ + ("mov.l %2,%0\n\t" + "mov.l %1,%2" + : "=&r" (tmp) : "r" (x), "m" (*__xg(ptr))); + break; + default: + tmp = 0; + } + local_irq_restore(flags); + return tmp; +} + +#include <asm-generic/cmpxchg-local.h> + +/* + * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make + * them available. + */ +#define cmpxchg_local(ptr, o, n) \ + ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), \ + (unsigned long)(o), \ + (unsigned long)(n), \ + sizeof(*(ptr)))) +#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) + +#ifndef CONFIG_SMP +#include <asm-generic/cmpxchg.h> +#endif + +#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) + +#endif /* __ARCH_H8300_CMPXCHG__ */ diff --git a/arch/h8300/include/asm/dma-mapping.h b/arch/h8300/include/asm/dma-mapping.h new file mode 100644 index 000000000000..6e67a90902f2 --- /dev/null +++ b/arch/h8300/include/asm/dma-mapping.h @@ -0,0 +1,57 @@ +#ifndef _H8300_DMA_MAPPING_H +#define _H8300_DMA_MAPPING_H + +#include <asm-generic/dma-coherent.h> + +extern struct dma_map_ops h8300_dma_map_ops; + +static inline struct dma_map_ops *get_dma_ops(struct device *dev) +{ + return &h8300_dma_map_ops; +} + +#include <asm-generic/dma-mapping-common.h> + +static inline int dma_supported(struct device *dev, u64 mask) +{ + return 0; +} + +static inline int dma_set_mask(struct device *dev, u64 mask) +{ + return 0; +} + +#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) +#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) + +#define dma_alloc_coherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL) + +static inline void *dma_alloc_attrs(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag, + struct dma_attrs *attrs) +{ + struct dma_map_ops *ops = get_dma_ops(dev); + void *memory; + + memory = ops->alloc(dev, size, dma_handle, flag, attrs); + return memory; +} + +#define dma_free_coherent(d, s, c, h) dma_free_attrs(d, s, c, h, NULL) + +static inline void dma_free_attrs(struct device *dev, size_t size, + void *cpu_addr, dma_addr_t dma_handle, + struct dma_attrs *attrs) +{ + struct dma_map_ops *ops = get_dma_ops(dev); + + ops->free(dev, size, cpu_addr, dma_handle, attrs); +} + +static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) +{ + return 0; +} + +#endif diff --git a/arch/h8300/include/asm/elf.h b/arch/h8300/include/asm/elf.h new file mode 100644 index 000000000000..09031d0127a3 --- /dev/null +++ b/arch/h8300/include/asm/elf.h @@ -0,0 +1,101 @@ +#ifndef __ASM_H8300_ELF_H +#define __ASM_H8300_ELF_H + +/* + * ELF register definitions.. + */ + +#include <asm/ptrace.h> +#include <asm/user.h> + +typedef unsigned long elf_greg_t; + +#define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t)) +typedef elf_greg_t elf_gregset_t[ELF_NGREG]; +typedef unsigned long elf_fpregset_t; + +/* + * This is used to ensure we don't load something for the wrong architecture. + */ +#define elf_check_arch(x) ((x)->e_machine == EM_H8_300) + +/* + * These are used to set parameters in the core dumps. + */ +#define ELF_CLASS ELFCLASS32 +#define ELF_DATA ELFDATA2MSB +#define ELF_ARCH EM_H8_300 +#if defined(CONFIG_CPU_H8300H) +#define ELF_CORE_EFLAGS 0x810000 +#endif +#if defined(CONFIG_CPU_H8S) +#define ELF_CORE_EFLAGS 0x820000 +#endif + +#define ELF_PLAT_INIT(_r) do { (_r)->er1 = 0; } while (0) + +#define ELF_EXEC_PAGESIZE 4096 + +/* This is the location that an ET_DYN program is loaded if exec'ed. Typical + use of this is to invoke "./ld.so someprog" to test out a new version of + the loader. We need to make sure that it is out of the way of the program + that it will "exec", and that there is sufficient room for the brk. */ + +#define ELF_ET_DYN_BASE 0xD0000000UL + +/* This yields a mask that user programs can use to figure out what + instruction set this cpu supports. */ + +#define ELF_HWCAP (0) + +/* This yields a string that ld.so will use to load implementation + specific libraries for optimization. This is more specific in + intent than poking at uname or /proc/cpuinfo. */ + +#define ELF_PLATFORM (NULL) + +#define R_H8_NONE 0 +#define R_H8_DIR32 1 +#define R_H8_DIR32_28 2 +#define R_H8_DIR32_24 3 +#define R_H8_DIR32_16 4 +#define R_H8_DIR32U 6 +#define R_H8_DIR32U_28 7 +#define R_H8_DIR32U_24 8 +#define R_H8_DIR32U_20 9 +#define R_H8_DIR32U_16 10 +#define R_H8_DIR24 11 +#define R_H8_DIR24_20 12 +#define R_H8_DIR24_16 13 +#define R_H8_DIR24U 14 +#define R_H8_DIR24U_20 15 +#define R_H8_DIR24U_16 16 +#define R_H8_DIR16 17 +#define R_H8_DIR16U 18 +#define R_H8_DIR16S_32 19 +#define R_H8_DIR16S_28 20 +#define R_H8_DIR16S_24 21 +#define R_H8_DIR16S_20 22 +#define R_H8_DIR16S 23 +#define R_H8_DIR8 24 +#define R_H8_DIR8U 25 +#define R_H8_DIR8Z_32 26 +#define R_H8_DIR8Z_28 27 +#define R_H8_DIR8Z_24 28 +#define R_H8_DIR8Z_20 29 +#define R_H8_DIR8Z_16 30 +#define R_H8_PCREL16 31 +#define R_H8_PCREL8 32 +#define R_H8_BPOS 33 +#define R_H8_PCREL32 34 +#define R_H8_GOT32O 35 +#define R_H8_GOT16O 36 +#define R_H8_DIR16A8 59 +#define R_H8_DIR16R8 60 +#define R_H8_DIR24A8 61 +#define R_H8_DIR24R8 62 +#define R_H8_DIR32A16 63 +#define R_H8_ABS32 65 +#define R_H8_ABS32A16 127 + +#endif diff --git a/arch/h8300/include/asm/flat.h b/arch/h8300/include/asm/flat.h new file mode 100644 index 000000000000..a4898eccf2bf --- /dev/null +++ b/arch/h8300/include/asm/flat.h @@ -0,0 +1,28 @@ +/* + * arch/h8300/asm/include/flat.h -- uClinux flat-format executables + */ + +#ifndef __H8300_FLAT_H__ +#define __H8300_FLAT_H__ + +#define flat_argvp_envp_on_stack() 1 +#define flat_old_ram_flag(flags) 1 +#define flat_reloc_valid(reloc, size) ((reloc) <= (size)) +#define flat_set_persistent(relval, p) 0 + +/* + * on the H8 a couple of the relocations have an instruction in the + * top byte. As there can only be 24bits of address space, we just + * always preserve that 8bits at the top, when it isn't an instruction + * is is 0 (davidm@snapgear.com) + */ + +#define flat_get_relocate_addr(rel) (rel & ~0x00000001) +#define flat_get_addr_from_rp(rp, relval, flags, persistent) \ + ({(void)persistent; \ + get_unaligned(rp) & (((flags) & FLAT_FLAG_GOTPIC) ? \ + 0xffffffff : 0x00ffffff); }) +#define flat_put_addr_at_rp(rp, addr, rel) \ + put_unaligned(((*(char *)(rp)) << 24) | ((addr) & 0x00ffffff), (rp)) + +#endif /* __H8300_FLAT_H__ */ diff --git a/arch/h8300/include/asm/io.h b/arch/h8300/include/asm/io.h new file mode 100644 index 000000000000..1d09b2f2e0fe --- /dev/null +++ b/arch/h8300/include/asm/io.h @@ -0,0 +1,57 @@ +#ifndef _H8300_IO_H +#define _H8300_IO_H + +#ifdef __KERNEL__ + +#include <asm-generic/io.h> + +/* H8/300 internal I/O functions */ +static inline unsigned char ctrl_inb(unsigned long addr) +{ + return *(volatile unsigned char *)addr; +} + +static inline unsigned short ctrl_inw(unsigned long addr) +{ + return *(volatile unsigned short *)addr; +} + +static inline unsigned long ctrl_inl(unsigned long addr) +{ + return *(volatile unsigned long *)addr; +} + +static inline void ctrl_outb(unsigned char b, unsigned long addr) +{ + *(volatile unsigned char *)addr = b; +} + +static inline void ctrl_outw(unsigned short b, unsigned long addr) +{ + *(volatile unsigned short *)addr = b; +} + +static inline void ctrl_outl(unsigned long b, unsigned long addr) +{ + *(volatile unsigned long *)addr = b; +} + +static inline void ctrl_bclr(int b, unsigned long addr) +{ + if (__builtin_constant_p(b)) + __asm__("bclr %1,%0" : : "WU"(addr), "i"(b)); + else + __asm__("bclr %w1,%0" : : "WU"(addr), "r"(b)); +} + +static inline void ctrl_bset(int b, unsigned long addr) +{ + if (__builtin_constant_p(b)) + __asm__("bset %1,%0" : : "WU"(addr), "i"(b)); + else + __asm__("bset %w1,%0" : : "WU"(addr), "r"(b)); +} + +#endif /* __KERNEL__ */ + +#endif /* _H8300_IO_H */ diff --git a/arch/h8300/include/asm/irq.h b/arch/h8300/include/asm/irq.h new file mode 100644 index 000000000000..69f23f0981b3 --- /dev/null +++ b/arch/h8300/include/asm/irq.h @@ -0,0 +1,26 @@ +#ifndef _H8300_IRQ_H_ +#define _H8300_IRQ_H_ + +#include <linux/irqchip.h> + +#if defined(CONFIG_CPU_H8300H) +#define NR_IRQS 64 +#define IRQ_CHIP h8300h_irq_chip +#define EXT_IRQ0 12 +#define EXT_IRQS 6 +#elif defined(CONFIG_CPU_H8S) +#define NR_IRQS 128 +#define IRQ_CHIP h8s_irq_chip +#define EXT_IRQ0 16 +#define EXT_IRQS 16 +#endif + +static inline int irq_canonicalize(int irq) +{ + return irq; +} + +void h8300_init_ipr(void); +extern struct irq_chip h8300h_irq_chip; +extern struct irq_chip h8s_irq_chip; +#endif /* _H8300_IRQ_H_ */ diff --git a/arch/h8300/include/asm/irqflags.h b/arch/h8300/include/asm/irqflags.h new file mode 100644 index 000000000000..5e1e3242e470 --- /dev/null +++ b/arch/h8300/include/asm/irqflags.h @@ -0,0 +1,96 @@ +#ifndef _H8300_IRQFLAGS_H +#define _H8300_IRQFLAGS_H + +#ifdef CONFIG_CPU_H8300H +typedef unsigned char h8300flags; + +static inline h8300flags arch_local_save_flags(void) +{ + h8300flags flags; + + __asm__ volatile ("stc ccr,%w0" : "=r" (flags)); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ + __asm__ volatile ("orc #0xc0,ccr"); +} + +static inline void arch_local_irq_enable(void) +{ + __asm__ volatile ("andc #0x3f,ccr"); +} + +static inline h8300flags arch_local_irq_save(void) +{ + h8300flags flags; + + __asm__ volatile ("stc ccr,%w0\n\t" + "orc #0xc0,ccr" : "=r" (flags)); + return flags; +} + +static inline void arch_local_irq_restore(h8300flags flags) +{ + __asm__ volatile ("ldc %w0,ccr" : : "r" (flags) : "cc"); +} + +static inline int arch_irqs_disabled_flags(unsigned long flags) +{ + return (flags & 0xc0) == 0xc0; +} +#endif +#ifdef CONFIG_CPU_H8S +typedef unsigned short h8300flags; + +static inline h8300flags arch_local_save_flags(void) +{ + h8300flags flags; + + __asm__ volatile ("stc ccr,%w0\n\tstc exr,%x0" : "=r" (flags)); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ + __asm__ volatile ("orc #0x80,ccr\n\t"); +} + +static inline void arch_local_irq_enable(void) +{ + __asm__ volatile ("andc #0x7f,ccr\n\t" + "andc #0xf0,exr\n\t"); +} + +static inline h8300flags arch_local_irq_save(void) +{ + h8300flags flags; + + __asm__ volatile ("stc ccr,%w0\n\t" + "stc exr,%x0\n\t" + "orc #0x80,ccr\n\t" + : "=r" (flags)); + return flags; +} + +static inline void arch_local_irq_restore(h8300flags flags) +{ + __asm__ volatile ("ldc %w0,ccr\n\t" + "ldc %x0,exr" + : : "r" (flags) : "cc"); +} + +static inline int arch_irqs_disabled_flags(h8300flags flags) +{ + return (flags & 0x0080) == 0x0080; +} + +#endif + +static inline int arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +#endif /* _H8300_IRQFLAGS_H */ diff --git a/arch/h8300/include/asm/mc146818rtc.h b/arch/h8300/include/asm/mc146818rtc.h new file mode 100644 index 000000000000..ab9d9646d241 --- /dev/null +++ b/arch/h8300/include/asm/mc146818rtc.h @@ -0,0 +1,9 @@ +/* + * Machine dependent access functions for RTC registers. + */ +#ifndef _H8300_MC146818RTC_H +#define _H8300_MC146818RTC_H + +/* empty include file to satisfy the include in genrtc.c/ide-geometry.c */ + +#endif /* _H8300_MC146818RTC_H */ diff --git a/arch/h8300/include/asm/mutex.h b/arch/h8300/include/asm/mutex.h new file mode 100644 index 000000000000..458c1f7fbc18 --- /dev/null +++ b/arch/h8300/include/asm/mutex.h @@ -0,0 +1,9 @@ +/* + * Pull in the generic implementation for the mutex fastpath. + * + * TODO: implement optimized primitives instead, or leave the generic + * implementation in place, or pick the atomic_xchg() based generic + * implementation. (see asm-generic/mutex-xchg.h for details) + */ + +#include <asm-generic/mutex-dec.h> diff --git a/arch/h8300/include/asm/page.h b/arch/h8300/include/asm/page.h new file mode 100644 index 000000000000..3a987a567258 --- /dev/null +++ b/arch/h8300/include/asm/page.h @@ -0,0 +1,18 @@ +#ifndef _H8300_PAGE_H +#define _H8300_PAGE_H + +#include <asm-generic/page.h> +#include <linux/types.h> + +#define MAP_NR(addr) (((uintptr_t)(addr)-PAGE_OFFSET) >> PAGE_SHIFT) +#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ + VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + +#ifndef __ASSEMBLY__ +extern unsigned long rom_length; +extern unsigned long memory_start; +extern unsigned long memory_end; +extern unsigned long _ramend; +#endif + +#endif diff --git a/arch/h8300/include/asm/page_offset.h b/arch/h8300/include/asm/page_offset.h new file mode 100644 index 000000000000..888576d7cc2a --- /dev/null +++ b/arch/h8300/include/asm/page_offset.h @@ -0,0 +1,2 @@ + +#define PAGE_OFFSET_RAW 0x00000000 diff --git a/arch/h8300/include/asm/pci.h b/arch/h8300/include/asm/pci.h new file mode 100644 index 000000000000..0b2acaa3dd84 --- /dev/null +++ b/arch/h8300/include/asm/pci.h @@ -0,0 +1,19 @@ +#ifndef _ASM_H8300_PCI_H +#define _ASM_H8300_PCI_H + +/* + * asm-h8300/pci.h - H8/300 specific PCI declarations. + * + * Yoshinori Sato <ysato@users.sourceforge.jp> + */ + +#define pcibios_assign_all_busses() 0 + +static inline void pcibios_penalize_isa_irq(int irq, int active) +{ + /* We don't do dynamic PCI IRQ allocation */ +} + +#define PCI_DMA_BUS_IS_PHYS (1) + +#endif /* _ASM_H8300_PCI_H */ diff --git a/arch/h8300/include/asm/pgtable.h b/arch/h8300/include/asm/pgtable.h new file mode 100644 index 000000000000..8341db67821d --- /dev/null +++ b/arch/h8300/include/asm/pgtable.h @@ -0,0 +1,49 @@ +#ifndef _H8300_PGTABLE_H +#define _H8300_PGTABLE_H +#include <asm-generic/pgtable-nopud.h> +#include <asm-generic/pgtable.h> +#define pgtable_cache_init() do { } while (0) +extern void paging_init(void); +#define PAGE_NONE __pgprot(0) /* these mean nothing to NO_MM */ +#define PAGE_SHARED __pgprot(0) /* these mean nothing to NO_MM */ +#define PAGE_COPY __pgprot(0) /* these mean nothing to NO_MM */ +#define PAGE_READONLY __pgprot(0) /* these mean nothing to NO_MM */ +#define PAGE_KERNEL __pgprot(0) /* these mean nothing to NO_MM */ +#define __swp_type(x) (0) +#define __swp_offset(x) (0) +#define __swp_entry(typ, off) ((swp_entry_t) { ((typ) | ((off) << 7)) }) +#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) +#define __swp_entry_to_pte(x) ((pte_t) { (x).val }) +#define kern_addr_valid(addr) (1) +#define pgprot_writecombine(prot) (prot) +#define pgprot_noncached pgprot_writecombine + +static inline int pte_file(pte_t pte) { return 0; } +#define swapper_pg_dir ((pgd_t *) 0) +/* + * ZERO_PAGE is a global shared page that is always zero: used + * for zero-mapped memory areas etc.. + */ +#define ZERO_PAGE(vaddr) (virt_to_page(0)) + +/* + * These would be in other places but having them here reduces the diffs. + */ +extern unsigned int kobjsize(const void *objp); +extern int is_in_rom(unsigned long); + +/* + * No page table caches to initialise + */ +#define pgtable_cache_init() do { } while (0) + +/* + * All 32bit addresses are effectively valid for vmalloc... + * Sort of meaningless for non-VM targets. + */ +#define VMALLOC_START 0 +#define VMALLOC_END 0xffffffff + +#define arch_enter_lazy_cpu_mode() do {} while (0) + +#endif /* _H8300_PGTABLE_H */ diff --git a/arch/h8300/include/asm/processor.h b/arch/h8300/include/asm/processor.h new file mode 100644 index 000000000000..54e3fd83c336 --- /dev/null +++ b/arch/h8300/include/asm/processor.h @@ -0,0 +1,144 @@ +/* + * include/asm-h8300/processor.h + * + * Copyright (C) 2002 Yoshinori Sato + * + * Based on: linux/asm-m68nommu/processor.h + * + * Copyright (C) 1995 Hamish Macdonald + */ + +#ifndef __ASM_H8300_PROCESSOR_H +#define __ASM_H8300_PROCESSOR_H + +/* + * Default implementation of macro that returns current + * instruction pointer ("program counter"). + */ +#define current_text_addr() ({ __label__ _l; _l: &&_l; }) + +#include <linux/compiler.h> +#include <asm/segment.h> +#include <asm/ptrace.h> +#include <asm/current.h> + +static inline unsigned long rdusp(void) +{ + extern unsigned int _sw_usp; + + return _sw_usp; +} + +static inline void wrusp(unsigned long usp) +{ + extern unsigned int _sw_usp; + + _sw_usp = usp; +} + +/* + * User space process size: 3.75GB. This is hardcoded into a few places, + * so don't change it unless you know what you are doing. + */ +#define TASK_SIZE (0xFFFFFFFFUL) + +#ifdef __KERNEL__ +#define STACK_TOP TASK_SIZE +#define STACK_TOP_MAX STACK_TOP +#endif + +/* + * This decides where the kernel will search for a free chunk of vm + * space during mmap's. We won't be using it + */ +#define TASK_UNMAPPED_BASE 0 + +struct thread_struct { + unsigned long ksp; /* kernel stack pointer */ + unsigned long usp; /* user stack pointer */ + unsigned long ccr; /* saved status register */ + unsigned long esp0; /* points to SR of stack frame */ + struct { + unsigned short *addr; + unsigned short inst; + } breakinfo; +}; + +#define INIT_THREAD { \ + .ksp = sizeof(init_stack) + (unsigned long)init_stack, \ + .usp = 0, \ + .ccr = PS_S, \ + .esp0 = 0, \ + .breakinfo = { \ + .addr = (unsigned short *)-1, \ + .inst = 0 \ + } \ +} + +/* + * Do necessary setup to start up a newly executed thread. + * + * pass the data segment into user programs if it exists, + * it can't hurt anything as far as I can tell + */ +#if defined(CONFIG_CPU_H8300H) +#define start_thread(_regs, _pc, _usp) \ +do { \ + (_regs)->pc = (_pc); \ + (_regs)->ccr = 0x00; /* clear all flags */ \ + (_regs)->er5 = current->mm->start_data; /* GOT base */ \ + (_regs)->sp = ((unsigned long)(_usp)) - sizeof(unsigned long) * 3; \ +} while (0) +#endif +#if defined(CONFIG_CPU_H8S) +#define start_thread(_regs, _pc, _usp) \ +do { \ + (_regs)->pc = (_pc); \ + (_regs)->ccr = 0x00; /* clear kernel flag */ \ + (_regs)->exr = 0x78; /* enable all interrupts */ \ + (_regs)->er5 = current->mm->start_data; /* GOT base */ \ + /* 14 = space for retaddr(4), vector(4), er0(4) and exr(2) on stack */ \ + (_regs)->sp = ((unsigned long)(_usp)) - 14; \ +} while (0) +#endif + +/* Forward declaration, a strange C thing */ +struct task_struct; + +/* Free all resources held by a thread. */ +static inline void release_thread(struct task_struct *dead_task) +{ +} + +/* + * Free current thread data structures etc.. + */ +static inline void exit_thread(void) +{ +} + +/* + * Return saved PC of a blocked thread. + */ +unsigned long thread_saved_pc(struct task_struct *tsk); +unsigned long get_wchan(struct task_struct *p); + +#define KSTK_EIP(tsk) \ + ({ \ + unsigned long eip = 0; \ + if ((tsk)->thread.esp0 > PAGE_SIZE && \ + MAP_NR((tsk)->thread.esp0) < max_mapnr) \ + eip = ((struct pt_regs *) (tsk)->thread.esp0)->pc; \ + eip; }) + +#define KSTK_ESP(tsk) ((tsk) == current ? rdusp() : (tsk)->thread.usp) + +#define cpu_relax() barrier() +#define cpu_relax_lowlatency() cpu_relax() + +#define HARD_RESET_NOW() ({ \ + local_irq_disable(); \ + asm("jmp @@0"); \ +}) + +#endif diff --git a/arch/h8300/include/asm/ptrace.h b/arch/h8300/include/asm/ptrace.h new file mode 100644 index 000000000000..e693fb463ea8 --- /dev/null +++ b/arch/h8300/include/asm/ptrace.h @@ -0,0 +1,36 @@ +#ifndef _H8300_PTRACE_H +#define _H8300_PTRACE_H + +#include <uapi/asm/ptrace.h> + +#ifndef __ASSEMBLY__ +#ifndef PS_S +#define PS_S (0x10) +#endif + +#if defined(CONFIG_CPU_H8300H) +#define H8300_REGS_NO 11 +#endif +#if defined(CONFIG_CPU_H8S) +#define H8300_REGS_NO 12 +#endif + +#define arch_has_single_step() (1) + +#define user_mode(regs) (!((regs)->ccr & PS_S)) +#define instruction_pointer(regs) ((regs)->pc) +#define profile_pc(regs) instruction_pointer(regs) +#define user_stack_pointer(regs) ((regs)->sp) +#define current_pt_regs() ((struct pt_regs *) \ + (THREAD_SIZE + (unsigned long)current_thread_info()) - 1) +#define signal_pt_regs() ((struct pt_regs *)current->thread.esp0) +#define current_user_stack_pointer() rdusp() +#define task_pt_regs(task) \ + ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE) - 1) + +extern long h8300_get_reg(struct task_struct *task, int regno); +extern int h8300_put_reg(struct task_struct *task, int regno, + unsigned long data); + +#endif /* __ASSEMBLY__ */ +#endif /* _H8300_PTRACE_H */ diff --git a/arch/h8300/include/asm/segment.h b/arch/h8300/include/asm/segment.h new file mode 100644 index 000000000000..48424c6e169f --- /dev/null +++ b/arch/h8300/include/asm/segment.h @@ -0,0 +1,45 @@ +#ifndef _H8300_SEGMENT_H +#define _H8300_SEGMENT_H + +/* define constants */ +#define USER_DATA (1) +#ifndef __USER_DS +#define __USER_DS (USER_DATA) +#endif +#define USER_PROGRAM (2) +#define SUPER_DATA (3) +#ifndef __KERNEL_DS +#define __KERNEL_DS (SUPER_DATA) +#endif +#define SUPER_PROGRAM (4) + +#ifndef __ASSEMBLY__ + +typedef struct { + unsigned long seg; +} mm_segment_t; + +#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) }) +#define USER_DS MAKE_MM_SEG(__USER_DS) +#define KERNEL_DS MAKE_MM_SEG(__KERNEL_DS) + +/* + * Get/set the SFC/DFC registers for MOVES instructions + */ + +static inline mm_segment_t get_fs(void) +{ + return USER_DS; +} + +static inline mm_segment_t get_ds(void) +{ + /* return the supervisor data space code */ + return KERNEL_DS; +} + +#define segment_eq(a, b) ((a).seg == (b).seg) + +#endif /* __ASSEMBLY__ */ + +#endif /* _H8300_SEGMENT_H */ diff --git a/arch/h8300/include/asm/signal.h b/arch/h8300/include/asm/signal.h new file mode 100644 index 000000000000..5870835c0470 --- /dev/null +++ b/arch/h8300/include/asm/signal.h @@ -0,0 +1,22 @@ +#ifndef _H8300_SIGNAL_H +#define _H8300_SIGNAL_H + +#include <uapi/asm/signal.h> + +/* Most things should be clean enough to redefine this at will, if care + is taken to make libc match. */ + +#define _NSIG 64 +#define _NSIG_BPW 32 +#define _NSIG_WORDS (_NSIG / _NSIG_BPW) + +typedef unsigned long old_sigset_t; /* at least 32 bits */ + +typedef struct { + unsigned long sig[_NSIG_WORDS]; +} sigset_t; + +#define __ARCH_HAS_SA_RESTORER +#include <asm/sigcontext.h> + +#endif /* _H8300_SIGNAL_H */ diff --git a/arch/h8300/include/asm/smp.h b/arch/h8300/include/asm/smp.h new file mode 100644 index 000000000000..9e9bd7e58922 --- /dev/null +++ b/arch/h8300/include/asm/smp.h @@ -0,0 +1 @@ +/* nothing required here yet */ diff --git a/arch/h8300/include/asm/string.h b/arch/h8300/include/asm/string.h new file mode 100644 index 000000000000..5dc5a8ac0544 --- /dev/null +++ b/arch/h8300/include/asm/string.h @@ -0,0 +1,17 @@ +#ifndef _H8300_STRING_H_ +#define _H8300_STRING_H_ + +#ifdef __KERNEL__ /* only set these up for kernel code */ + +#include <asm/setup.h> +#include <asm/page.h> + +#define __HAVE_ARCH_MEMSET +extern void *memset(void *s, int c, size_t count); + +#define __HAVE_ARCH_MEMCPY +extern void *memcpy(void *d, const void *s, size_t count); + +#endif /* KERNEL */ + +#endif diff --git a/arch/h8300/include/asm/switch_to.h b/arch/h8300/include/asm/switch_to.h new file mode 100644 index 000000000000..7ad1bf92dbc3 --- /dev/null +++ b/arch/h8300/include/asm/switch_to.h @@ -0,0 +1,51 @@ +#ifndef _H8300_SWITCH_TO_H +#define _H8300_SWITCH_TO_H + +/* + * switch_to(n) should switch tasks to task ptr, first checking that + * ptr isn't the current task, in which case it does nothing. This + * also clears the TS-flag if the task we switched to has used the + * math co-processor latest. + */ +/* + * switch_to() saves the extra registers, that are not saved + * automatically by SAVE_SWITCH_STACK in resume(), ie. d0-d5 and + * a0-a1. Some of these are used by schedule() and its predecessors + * and so we might get see unexpected behaviors when a task returns + * with unexpected register values. + * + * syscall stores these registers itself and none of them are used + * by syscall after the function in the syscall has been called. + * + * Beware that resume now expects *next to be in d1 and the offset of + * tss to be in a1. This saves a few instructions as we no longer have + * to push them onto the stack and read them back right after. + * + * 02/17/96 - Jes Sorensen (jds@kom.auc.dk) + * + * Changed 96/09/19 by Andreas Schwab + * pass prev in a0, next in a1, offset of tss in d1, and whether + * the mm structures are shared in d2 (to avoid atc flushing). + * + * H8/300 Porting 2002/09/04 Yoshinori Sato + */ + +asmlinkage void resume(void); +#define switch_to(prev, next, last) \ +do { \ + void *_last; \ + __asm__ __volatile__( \ + "mov.l %1, er0\n\t" \ + "mov.l %2, er1\n\t" \ + "mov.l %3, er2\n\t" \ + "jsr @_resume\n\t" \ + "mov.l er2,%0\n\t" \ + : "=r" (_last) \ + : "r" (&(prev->thread)), \ + "r" (&(next->thread)), \ + "g" (prev) \ + : "cc", "er0", "er1", "er2", "er3"); \ + (last) = _last; \ +} while (0) + +#endif /* _H8300_SWITCH_TO_H */ diff --git a/arch/h8300/include/asm/syscall.h b/arch/h8300/include/asm/syscall.h new file mode 100644 index 000000000000..b41f688d02cf --- /dev/null +++ b/arch/h8300/include/asm/syscall.h @@ -0,0 +1,56 @@ +#ifndef __ASM_H8300_SYSCALLS_32_H +#define __ASM_H8300_SYSCALLS_32_H + +#ifdef __KERNEL__ + +#include <linux/compiler.h> +#include <linux/linkage.h> +#include <linux/types.h> +#include <linux/ptrace.h> + +static inline int +syscall_get_nr(struct task_struct *task, struct pt_regs *regs) +{ + return regs->orig_er0; +} + +static inline void +syscall_get_arguments(struct task_struct *task, struct pt_regs *regs, + unsigned int i, unsigned int n, unsigned long *args) +{ + BUG_ON(i + n > 6); + + while (n > 0) { + switch (i) { + case 0: + *args++ = regs->er1; + break; + case 1: + *args++ = regs->er2; + break; + case 2: + *args++ = regs->er3; + break; + case 3: + *args++ = regs->er4; + break; + case 4: + *args++ = regs->er5; + break; + case 5: + *args++ = regs->er6; + break; + } + i++; + n--; + } +} + + + +/* Misc syscall related bits */ +asmlinkage long do_syscall_trace_enter(struct pt_regs *regs); +asmlinkage void do_syscall_trace_leave(struct pt_regs *regs); + +#endif /* __KERNEL__ */ +#endif /* __ASM_H8300_SYSCALLS_32_H */ diff --git a/arch/h8300/include/asm/thread_info.h b/arch/h8300/include/asm/thread_info.h new file mode 100644 index 000000000000..544c30785ad4 --- /dev/null +++ b/arch/h8300/include/asm/thread_info.h @@ -0,0 +1,111 @@ +/* thread_info.h: h8300 low-level thread information + * adapted from the i386 and PPC versions by Yoshinori Sato <ysato@users.sourceforge.jp> + * + * Copyright (C) 2002 David Howells (dhowells@redhat.com) + * - Incorporating suggestions made by Linus Torvalds and Dave Miller + */ + +#ifndef _ASM_THREAD_INFO_H +#define _ASM_THREAD_INFO_H + +#include <asm/page.h> +#include <asm/segment.h> + +#ifdef __KERNEL__ + +#ifndef __ASSEMBLY__ + +/* + * low level task data. + * If you change this, change the TI_* offsets below to match. + */ +struct thread_info { + struct task_struct *task; /* main task structure */ + unsigned long flags; /* low level flags */ + int cpu; /* cpu we're on */ + int preempt_count; /* 0 => preemptable, <0 => BUG */ + mm_segment_t addr_limit; + struct restart_block restart_block; +}; + +/* + * macros/functions for gaining access to the thread information structure + */ +#define INIT_THREAD_INFO(tsk) \ +{ \ + .task = &tsk, \ + .flags = 0, \ + .cpu = 0, \ + .preempt_count = INIT_PREEMPT_COUNT, \ + .addr_limit = KERNEL_DS, \ + .restart_block = { \ + .fn = do_no_restart_syscall, \ + }, \ +} + +#define init_thread_info (init_thread_union.thread_info) +#define init_stack (init_thread_union.stack) + + +/* + * Size of kernel stack for each process. This must be a power of 2... + */ +#define THREAD_SIZE_ORDER 1 +#define THREAD_SIZE 8192 /* 2 pages */ + + +/* how to get the thread information struct from C */ +static inline struct thread_info *current_thread_info(void) +{ + struct thread_info *ti; + + __asm__("mov.l sp, %0\n\t" + "and.w %1, %T0" + : "=&r"(ti) + : "i" (~(THREAD_SIZE-1) & 0xffff)); + return ti; +} + +#endif /* __ASSEMBLY__ */ + +/* + * thread information flag bit numbers + */ +#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ +#define TIF_SIGPENDING 1 /* signal pending */ +#define TIF_NEED_RESCHED 2 /* rescheduling necessary */ +#define TIF_SINGLESTEP 3 /* singlestepping active */ +#define TIF_MEMDIE 4 /* is terminating due to OOM killer */ +#define TIF_RESTORE_SIGMASK 5 /* restore signal mask in do_signal() */ +#define TIF_NOTIFY_RESUME 6 /* callback before returning to user */ +#define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */ +#define TIF_SYSCALL_TRACEPOINT 8 /* for ftrace syscall instrumentation */ +#define TIF_POLLING_NRFLAG 9 /* true if poll_idle() is polling TIF_NEED_RESCHED */ + +/* as above, but as bit values */ +#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) +#define _TIF_SIGPENDING (1 << TIF_SIGPENDING) +#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) +#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) +#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) +#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) +#define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) +#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) + +/* work to do in syscall trace */ +#define _TIF_WORK_SYSCALL_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \ + _TIF_SYSCALL_AUDIT | _TIF_SYSCALL_TRACEPOINT) + +/* work to do on any return to u-space */ +#define _TIF_ALLWORK_MASK (_TIF_SYSCALL_TRACE | _TIF_SIGPENDING | \ + _TIF_NEED_RESCHED | _TIF_SYSCALL_AUDIT | \ + _TIF_SINGLESTEP | _TIF_NOTIFY_RESUME | \ + _TIF_SYSCALL_TRACEPOINT) + +/* work to do on interrupt/exception return */ +#define _TIF_WORK_MASK (_TIF_ALLWORK_MASK & ~(_TIF_SYSCALL_TRACE | \ + _TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP)) + +#endif /* __KERNEL__ */ + +#endif /* _ASM_THREAD_INFO_H */ diff --git a/arch/h8300/include/asm/tlb.h b/arch/h8300/include/asm/tlb.h new file mode 100644 index 000000000000..2c6fa4eed448 --- /dev/null +++ b/arch/h8300/include/asm/tlb.h @@ -0,0 +1,8 @@ +#ifndef __H8300_TLB_H__ +#define __H8300_TLB_H__ + +#define tlb_flush(tlb) do { } while (0) + +#include <asm-generic/tlb.h> + +#endif diff --git a/arch/h8300/include/asm/traps.h b/arch/h8300/include/asm/traps.h new file mode 100644 index 000000000000..aa34e75fd767 --- /dev/null +++ b/arch/h8300/include/asm/traps.h @@ -0,0 +1,41 @@ +/* + * linux/include/asm-h8300/traps.h + * + * Copyright (C) 2003 Yoshinori Sato <ysato@users.sourceforge.jp> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#ifndef _H8300_TRAPS_H +#define _H8300_TRAPS_H + +extern void _system_call(void); +extern void _interrupt_entry(void); +extern void _trace_break(void); +extern void _nmi(void); +extern void _interrupt_entry(void); + +extern unsigned long *_interrupt_redirect_table; + +#define JMP_OP 0x5a000000 +#define JSR_OP 0x5e000000 +#define VECTOR(address) ((JMP_OP)|((unsigned long)address)) +#define REDIRECT(address) ((JSR_OP)|((unsigned long)address)) +#define CPU_VECTOR ((unsigned long *)0x000000) +#define ADDR_MASK (0xffffff) + +#define TRACE_VEC 5 + +#define TRAP0_VEC 8 +#define TRAP1_VEC 9 +#define TRAP2_VEC 10 +#define TRAP3_VEC 11 + +extern char _start, _etext; +#define check_kernel_text(addr) \ + ((addr >= (unsigned long)(&_start)) && \ + (addr < (unsigned long)(&_etext))) + +#endif /* _H8300_TRAPS_H */ diff --git a/arch/h8300/include/asm/user.h b/arch/h8300/include/asm/user.h new file mode 100644 index 000000000000..2e3555f451f0 --- /dev/null +++ b/arch/h8300/include/asm/user.h @@ -0,0 +1,74 @@ +#ifndef _H8300_USER_H +#define _H8300_USER_H + +#include <asm/page.h> + +/* Core file format: The core file is written in such a way that gdb + can understand it and provide useful information to the user (under + linux we use the 'trad-core' bfd). There are quite a number of + obstacles to being able to view the contents of the floating point + registers, and until these are solved you will not be able to view the + contents of them. Actually, you can read in the core file and look at + the contents of the user struct to find out what the floating point + registers contain. + The actual file contents are as follows: + UPAGE: 1 page consisting of a user struct that tells gdb what is present + in the file. Directly after this is a copy of the task_struct, which + is currently not used by gdb, but it may come in useful at some point. + All of the registers are stored as part of the upage. The upage should + always be only one page. + DATA: The data area is stored. We use current->end_text to + current->brk to pick up all of the user variables, plus any memory + that may have been malloced. No attempt is made to determine if a page + is demand-zero or if a page is totally unused, we just cover the entire + range. All of the addresses are rounded in such a way that an integral + number of pages is written. + STACK: We need the stack information in order to get a meaningful + backtrace. We need to write the data from (esp) to + current->start_stack, so we round each of these off in order to be able + to write an integer number of pages. + The minimum core file size is 3 pages, or 12288 bytes. +*/ + +/* This is the old layout of "struct pt_regs" as of Linux 1.x, and + is still the layout used by user (the new pt_regs doesn't have + all registers). */ +struct user_regs_struct { + long er1, er2, er3, er4, er5, er6; + long er0; + long usp; + long orig_er0; + long ccr; + long pc; +}; + +/* When the kernel dumps core, it starts by dumping the user struct - + this will be used by gdb to figure out where the data and stack segments + are within the file, and what virtual addresses to use. */ +struct user { +/* We start with the registers, to mimic the way that "memory" is returned + from the ptrace(3,...) function. */ + struct user_regs_struct regs; /* Where the registers are actually stored */ +/* ptrace does not yet supply these. Someday.... */ +/* The rest of this junk is to help gdb figure out what goes where */ + unsigned long int u_tsize; /* Text segment size (pages). */ + unsigned long int u_dsize; /* Data segment size (pages). */ + unsigned long int u_ssize; /* Stack segment size (pages). */ + unsigned long start_code; /* Starting virtual address of text. */ + unsigned long start_stack; /* Starting virtual address of stack area. + This is actually the bottom of the stack, + the top of the stack is always found in the + esp register. */ + long int signal; /* Signal that caused the core dump. */ + int reserved; /* No longer used */ + unsigned long u_ar0; /* Used by gdb to help find the values for */ + /* the registers. */ + unsigned long magic; /* To uniquely identify a core file */ + char u_comm[32]; /* User command that was responsible */ +}; +#define NBPG PAGE_SIZE +#define UPAGES 1 +#define HOST_TEXT_START_ADDR (u.start_code) +#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) + +#endif |