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h8300: Assembly headers

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Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
This commit is contained in:
Yoshinori Sato 2015-05-11 02:20:06 +09:00
parent a2ed0c57a5
commit d2a5f4999f
32 changed files with 1605 additions and 0 deletions
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75
arch/h8300/include/asm/Kbuild Normal file
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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

159
arch/h8300/include/asm/atomic.h Normal file
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#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 __ */

185
arch/h8300/include/asm/bitops.h Normal file
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#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 */

14
arch/h8300/include/asm/bitsperlong.h Normal file
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#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 */

12
arch/h8300/include/asm/bug.h Normal file
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#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

7
arch/h8300/include/asm/byteorder.h Normal file
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#ifndef __H8300_BYTEORDER_H__
#define __H8300_BYTEORDER_H__
#define __BIG_ENDIAN __ORDER_BIG_ENDIAN__
#include <linux/byteorder/big_endian.h>
#endif

11
arch/h8300/include/asm/cache.h Normal file
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#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

65
arch/h8300/include/asm/cmpxchg.h Normal file
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#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__ */

57
arch/h8300/include/asm/dma-mapping.h Normal file
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#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

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arch/h8300/include/asm/elf.h Normal file
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#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

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arch/h8300/include/asm/flat.h Normal file
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/*
* 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__ */

57
arch/h8300/include/asm/io.h Normal file
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#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 */

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#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_ */

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#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 */

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/*
* 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 */

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/*
* 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>

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#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

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#define PAGE_OFFSET_RAW 0x00000000

19
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#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 */

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#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 */

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/*
* 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

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#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 */

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#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 */

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#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 */

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/* nothing required here yet */

17
arch/h8300/include/asm/string.h Normal file
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#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

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#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 */

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#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 */

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/* 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 */

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#ifndef __H8300_TLB_H__
#define __H8300_TLB_H__
#define tlb_flush(tlb) do { } while (0)
#include <asm-generic/tlb.h>
#endif

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/*
* 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 */

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arch/h8300/include/asm/user.h Normal file
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#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