Merge branch 'remove-h8300' of git://git.infradead.org/users/hch/misc into asm-generic

* 'remove-h8300' of git://git.infradead.org/users/hch/misc:
  remove the h8300 architecture

This is clearly the least actively maintained architecture we have at
the moment, and probably the least useful. It is now the only one that
does not support MMUs at all, and most of the boards only support 4MB
of RAM, out of which the defconfig kernel needs more than half just
for .text/.data.

Guenter Roeck did the original patch to remove the architecture in 2013
after it had already been obsolete for a while, and Yoshinori Sato brought
it back in a much more modern form in 2015. Looking at the git history
since the reinstantiation, it's clear that almost all commits in the tree
are build fixes or cross-architecture cleanups:

$ git log --no-merges --format=%an v4.5.. arch/h8300/  | sort | uniq
-c | sort -rn | head -n 12
     25 Masahiro Yamada
     18 Christoph Hellwig
     14 Mike Rapoport
      9 Arnd Bergmann
      8 Mark Rutland
      7 Peter Zijlstra
      6 Kees Cook
      6 Ingo Molnar
      6 Al Viro
      5 Randy Dunlap
      4 Yury Norov

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 135 deletions

diff --git a/arch/h8300/kernel/kgdb.c b/arch/h8300/kernel/kgdb.c
deleted file mode 100644
index 602e478afbd5..000000000000
--- a/arch/h8300/kernel/kgdb.c
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- * H8/300 KGDB support
- *
- * Copyright (C) 2015 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.
- */
-
-#include <linux/ptrace.h>
-#include <linux/kgdb.h>
-#include <linux/kdebug.h>
-#include <linux/io.h>
-
-struct dbg_reg_def_t dbg_reg_def[DBG_MAX_REG_NUM] = {
-	{ "er0", GDB_SIZEOF_REG, offsetof(struct pt_regs, er0) },
-	{ "er1", GDB_SIZEOF_REG, offsetof(struct pt_regs, er1) },
-	{ "er2", GDB_SIZEOF_REG, offsetof(struct pt_regs, er2) },
-	{ "er3", GDB_SIZEOF_REG, offsetof(struct pt_regs, er3) },
-	{ "er4", GDB_SIZEOF_REG, offsetof(struct pt_regs, er4) },
-	{ "er5", GDB_SIZEOF_REG, offsetof(struct pt_regs, er5) },
-	{ "er6", GDB_SIZEOF_REG, offsetof(struct pt_regs, er6) },
-	{ "sp", GDB_SIZEOF_REG, offsetof(struct pt_regs, sp) },
-	{ "ccr", GDB_SIZEOF_REG, offsetof(struct pt_regs, ccr) },
-	{ "pc", GDB_SIZEOF_REG, offsetof(struct pt_regs, pc) },
-	{ "cycles", GDB_SIZEOF_REG, -1 },
-#if defined(CONFIG_CPU_H8S)
-	{ "exr", GDB_SIZEOF_REG, offsetof(struct pt_regs, exr) },
-#endif
-	{ "tick", GDB_SIZEOF_REG, -1 },
-	{ "inst", GDB_SIZEOF_REG, -1 },
-};
-
-char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs)
-{
-	if (regno >= DBG_MAX_REG_NUM || regno < 0)
-		return NULL;
-
-	switch (regno) {
-	case GDB_CCR:
-#if defined(CONFIG_CPU_H8S)
-	case GDB_EXR:
-#endif
-		*(u32 *)mem = *(u16 *)((void *)regs +
-				       dbg_reg_def[regno].offset);
-		break;
-	default:
-		if (dbg_reg_def[regno].offset >= 0)
-			memcpy(mem, (void *)regs + dbg_reg_def[regno].offset,
-			       dbg_reg_def[regno].size);
-		else
-			memset(mem, 0, dbg_reg_def[regno].size);
-		break;
-	}
-	return dbg_reg_def[regno].name;
-}
-
-int dbg_set_reg(int regno, void *mem, struct pt_regs *regs)
-{
-	if (regno >= DBG_MAX_REG_NUM || regno < 0)
-		return -EINVAL;
-
-	switch (regno) {
-	case GDB_CCR:
-#if defined(CONFIG_CPU_H8S)
-	case GDB_EXR:
-#endif
-		*(u16 *)((void *)regs +
-			 dbg_reg_def[regno].offset) = *(u32 *)mem;
-		break;
-	default:
-		memcpy((void *)regs + dbg_reg_def[regno].offset, mem,
-		       dbg_reg_def[regno].size);
-	}
-	return 0;
-}
-
-asmlinkage void h8300_kgdb_trap(struct pt_regs *regs)
-{
-	regs->pc &= 0x00ffffff;
-	if (kgdb_handle_exception(10, SIGTRAP, 0, regs))
-		return;
-	if (*(u16 *)(regs->pc) == *(u16 *)&arch_kgdb_ops.gdb_bpt_instr)
-		regs->pc += BREAK_INSTR_SIZE;
-	regs->pc |= regs->ccr << 24;
-}
-
-void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
-{
-	memset((char *)gdb_regs, 0, NUMREGBYTES);
-	gdb_regs[GDB_SP] = p->thread.ksp;
-	gdb_regs[GDB_PC] = KSTK_EIP(p);
-}
-
-void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long pc)
-{
-	regs->pc = pc;
-}
-
-int kgdb_arch_handle_exception(int vector, int signo, int err_code,
-				char *remcom_in_buffer, char *remcom_out_buffer,
-				struct pt_regs *regs)
-{
-	char *ptr;
-	unsigned long addr;
-
-	switch (remcom_in_buffer[0]) {
-	case 's':
-	case 'c':
-		/* handle the optional parameters */
-		ptr = &remcom_in_buffer[1];
-		if (kgdb_hex2long(&ptr, &addr))
-			regs->pc = addr;
-
-		return 0;
-	}
-
-	return -1; /* this means that we do not want to exit from the handler */
-}
-
-int kgdb_arch_init(void)
-{
-	return 0;
-}
-
-void kgdb_arch_exit(void)
-{
-	/* Nothing to do */
-}
-
-const struct kgdb_arch arch_kgdb_ops = {
-	/* Breakpoint instruction: trapa #2 */
-	.gdb_bpt_instr = { 0x57, 0x20 },
-};