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kernel_linux
提交 aaeac66b 编写于 作者: R Richard Weinberger
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um: Remove ppc cruft 

That code is a relict from the early days of UML.
ppc support was never completed nor worked.
Let's rip it out.
Signed-off-by: NRichard Weinberger <richard@nod.at>
上级 23fc5f15
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arch/um/Makefile-ppc 已删除 100644 → 0
浏览文件 @ 23fc5f15
ifeq ($(CONFIG_HOST_2G_2G), y)
START_ADDR = 0x80000000
else
START_ADDR = 0xc0000000
endif
ARCH_CFLAGS = -U__powerpc__ -D__UM_PPC__
# The arch is ppc, but the elf32 name is powerpc
ELF_SUBARCH = powerpc
arch/um/sys-ppc/Makefile 已删除 100644 → 0
浏览文件 @ 23fc5f15
OBJ = built-in.o
.S.o:
$(CC) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
OBJS = ptrace.o sigcontext.o checksum.o miscthings.o misc.o \
ptrace_user.o sysrq.o
asflags-y := -DCONFIG_PPC32 -I. -I$(srctree)/arch/ppc/kernel
all: $(OBJ)
$(OBJ): $(OBJS)
rm -f $@
$(LD) $(LINKFLAGS) --start-group $^ --end-group -o $@
ptrace_user.o: ptrace_user.c
$(CC) -D__KERNEL__ $(USER_CFLAGS) $(ccflags-y) -c -o $@ $<
sigcontext.o: sigcontext.c
$(CC) $(USER_CFLAGS) $(ccflags-y) -c -o $@ $<
checksum.S:
rm -f $@
ln -s $(srctree)/arch/ppc/lib/$@ $@
mk_defs.c:
rm -f $@
ln -s $(srctree)/arch/ppc/kernel/$@ $@
ppc_defs.head:
rm -f $@
ln -s $(srctree)/arch/ppc/kernel/$@ $@
ppc_defs.h: mk_defs.c ppc_defs.head \
$(srctree)/include/asm-ppc/mmu.h \
$(srctree)/include/asm-ppc/processor.h \
$(srctree)/include/asm-ppc/pgtable.h \
$(srctree)/include/asm-ppc/ptrace.h
# $(CC) $(CFLAGS) -S mk_defs.c
cp ppc_defs.head ppc_defs.h
# for bk, this way we can write to the file even if it's not checked out
echo '#define THREAD 608' >> ppc_defs.h
echo '#define PT_REGS 8' >> ppc_defs.h
echo '#define CLONE_VM 256' >> ppc_defs.h
# chmod u+w ppc_defs.h
# grep '^#define' mk_defs.s >> ppc_defs.h
# rm mk_defs.s
# the asm link is horrible, and breaks the other targets. This is also
# not going to work with parallel makes.
checksum.o: checksum.S
rm -f asm
ln -s $(srctree)/include/asm-ppc asm
$(CC) $(asflags-y) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
rm -f asm
misc.o: misc.S ppc_defs.h
rm -f asm
ln -s $(srctree)/include/asm-ppc asm
$(CC) $(asflags-y) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
rm -f asm
clean-files := $(OBJS) ppc_defs.h checksum.S mk_defs.c
arch/um/sys-ppc/asm/archparam.h 已删除 100644 → 0
浏览文件 @ 23fc5f15
#ifndef __UM_ARCHPARAM_PPC_H
#define __UM_ARCHPARAM_PPC_H
/********* Bits for asm-um/string.h **********/
#define __HAVE_ARCH_STRRCHR
#endif
arch/um/sys-ppc/asm/elf.h 已删除 100644 → 0
浏览文件 @ 23fc5f15
#ifndef __UM_ELF_PPC_H
#define __UM_ELF_PPC_H
extern long elf_aux_hwcap;
#define ELF_HWCAP (elf_aux_hwcap)
#define SET_PERSONALITY(ex) do ; while(0)
#define ELF_EXEC_PAGESIZE 4096
#define elf_check_arch(x) (1)
#ifdef CONFIG_64BIT
#define ELF_CLASS ELFCLASS64
#else
#define ELF_CLASS ELFCLASS32
#endif
#define R_386_NONE 0
#define R_386_32 1
#define R_386_PC32 2
#define R_386_GOT32 3
#define R_386_PLT32 4
#define R_386_COPY 5
#define R_386_GLOB_DAT 6
#define R_386_JMP_SLOT 7
#define R_386_RELATIVE 8
#define R_386_GOTOFF 9
#define R_386_GOTPC 10
#define R_386_NUM 11
#define ELF_PLATFORM (0)
#define ELF_ET_DYN_BASE (0x08000000)
/* the following stolen from asm-ppc/elf.h */
#define ELF_NGREG 48 /* includes nip, msr, lr, etc. */
#define ELF_NFPREG 33 /* includes fpscr */
/* General registers */
typedef unsigned long elf_greg_t;
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
/* Floating point registers */
typedef double elf_fpreg_t;
typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
#define ELF_DATA ELFDATA2MSB
#define ELF_ARCH EM_PPC
#endif
arch/um/sys-ppc/asm/processor.h 已删除 100644 → 0
浏览文件 @ 23fc5f15
#ifndef __UM_PROCESSOR_PPC_H
#define __UM_PROCESSOR_PPC_H
#if defined(__ASSEMBLY__)
#define CONFIG_PPC_MULTIPLATFORM
#include "arch/processor.h"
#else
#include "asm/processor-generic.h"
#endif
#endif
arch/um/sys-ppc/misc.S 已删除 100644 → 0
浏览文件 @ 23fc5f15
/*
* This file contains miscellaneous low-level functions.
* Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
*
* Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
* and Paul Mackerras.
*
* A couple of functions stolen from arch/ppc/kernel/misc.S for UML
* by Chris Emerson.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
*/
#include <asm/processor.h>
#include "ppc_asm.h"
#if defined(CONFIG_4xx) || defined(CONFIG_8xx)
#define CACHE_LINE_SIZE 16
#define LG_CACHE_LINE_SIZE 4
#define MAX_COPY_PREFETCH 1
#else
#define CACHE_LINE_SIZE 32
#define LG_CACHE_LINE_SIZE 5
#define MAX_COPY_PREFETCH 4
#endif /* CONFIG_4xx || CONFIG_8xx */
.text
/*
* Clear a page using the dcbz instruction, which doesn't cause any
* memory traffic (except to write out any cache lines which get
* displaced). This only works on cacheable memory.
*/
_GLOBAL(clear_page)
li r0,4096/CACHE_LINE_SIZE
mtctr r0
#ifdef CONFIG_8xx
li r4, 0
1: stw r4, 0(r3)
stw r4, 4(r3)
stw r4, 8(r3)
stw r4, 12(r3)
#else
1: dcbz 0,r3
#endif
addi r3,r3,CACHE_LINE_SIZE
bdnz 1b
blr
/*
* Copy a whole page. We use the dcbz instruction on the destination
* to reduce memory traffic (it eliminates the unnecessary reads of
* the destination into cache). This requires that the destination
* is cacheable.
*/
#define COPY_16_BYTES \
lwz r6,4(r4); \
lwz r7,8(r4); \
lwz r8,12(r4); \
lwzu r9,16(r4); \
stw r6,4(r3); \
stw r7,8(r3); \
stw r8,12(r3); \
stwu r9,16(r3)
_GLOBAL(copy_page)
addi r3,r3,-4
addi r4,r4,-4
li r5,4
#ifndef CONFIG_8xx
#if MAX_COPY_PREFETCH > 1
li r0,MAX_COPY_PREFETCH
li r11,4
mtctr r0
11: dcbt r11,r4
addi r11,r11,CACHE_LINE_SIZE
bdnz 11b
#else /* MAX_COPY_PREFETCH == 1 */
dcbt r5,r4
li r11,CACHE_LINE_SIZE+4
#endif /* MAX_COPY_PREFETCH */
#endif /* CONFIG_8xx */
li r0,4096/CACHE_LINE_SIZE
mtctr r0
1:
#ifndef CONFIG_8xx
dcbt r11,r4
dcbz r5,r3
#endif
COPY_16_BYTES
#if CACHE_LINE_SIZE >= 32
COPY_16_BYTES
#if CACHE_LINE_SIZE >= 64
COPY_16_BYTES
COPY_16_BYTES
#if CACHE_LINE_SIZE >= 128
COPY_16_BYTES
COPY_16_BYTES
COPY_16_BYTES
COPY_16_BYTES
#endif
#endif
#endif
bdnz 1b
blr
arch/um/sys-ppc/miscthings.c 已删除 100644 → 0
浏览文件 @ 23fc5f15
#include <linux/threads.h>
#include <linux/stddef.h> // for NULL
#include <linux/elf.h> // for AT_NULL
/* The following function nicked from arch/ppc/kernel/process.c and
* adapted slightly */
/*
* XXX ld.so expects the auxiliary table to start on
* a 16-byte boundary, so we have to find it and
* move it up. :-(
*/
void shove_aux_table(unsigned long sp)
{
int argc;
char *p;
unsigned long e;
unsigned long aux_start, offset;
argc = *(int *)sp;
sp += sizeof(int) + (argc + 1) * sizeof(char *);
/* skip over the environment pointers */
do {
p = *(char **)sp;
sp += sizeof(char *);
} while (p != NULL);
aux_start = sp;
/* skip to the end of the auxiliary table */
do {
e = *(unsigned long *)sp;
sp += 2 * sizeof(unsigned long);
} while (e != AT_NULL);
offset = ((aux_start + 15) & ~15) - aux_start;
if (offset != 0) {
do {
sp -= sizeof(unsigned long);
e = *(unsigned long *)sp;
*(unsigned long *)(sp + offset) = e;
} while (sp > aux_start);
}
}
/* END stuff taken from arch/ppc/kernel/process.c */
arch/um/sys-ppc/ptrace.c 已删除 100644 → 0
浏览文件 @ 23fc5f15
#include <linux/sched.h>
#include "asm/ptrace.h"
int putreg(struct task_struct *child, unsigned long regno,
unsigned long value)
{
child->thread.process_regs.regs[regno >> 2] = value;
return 0;
}
int poke_user(struct task_struct *child, long addr, long data)
{
if ((addr & 3) || addr < 0)
return -EIO;
if (addr < MAX_REG_OFFSET)
return putreg(child, addr, data);
else if((addr >= offsetof(struct user, u_debugreg[0])) &&
(addr <= offsetof(struct user, u_debugreg[7]))){
addr -= offsetof(struct user, u_debugreg[0]);
addr = addr >> 2;
if((addr == 4) || (addr == 5)) return -EIO;
child->thread.arch.debugregs[addr] = data;
return 0;
}
return -EIO;
}
unsigned long getreg(struct task_struct *child, unsigned long regno)
{
unsigned long retval = ~0UL;
retval &= child->thread.process_regs.regs[regno >> 2];
return retval;
}
int peek_user(struct task_struct *child, long addr, long data)
{
/* read the word at location addr in the USER area. */
unsigned long tmp;
if ((addr & 3) || addr < 0)
return -EIO;
tmp = 0; /* Default return condition */
if(addr < MAX_REG_OFFSET){
tmp = getreg(child, addr);
}
else if((addr >= offsetof(struct user, u_debugreg[0])) &&
(addr <= offsetof(struct user, u_debugreg[7]))){
addr -= offsetof(struct user, u_debugreg[0]);
addr = addr >> 2;
tmp = child->thread.arch.debugregs[addr];
}
return put_user(tmp, (unsigned long *) data);
}
arch/um/sys-ppc/ptrace_user.c 已删除 100644 → 0
浏览文件 @ 23fc5f15
#include <errno.h>
#include <asm/ptrace.h>
#include <sysdep/ptrace.h>
int ptrace_getregs(long pid, unsigned long *regs_out)
{
int i;
for (i=0; i < sizeof(struct sys_pt_regs)/sizeof(PPC_REG); ++i) {
errno = 0;
regs_out->regs[i] = ptrace(PTRACE_PEEKUSR, pid, i*4, 0);
if (errno) {
return -errno;
}
}
return 0;
}
int ptrace_setregs(long pid, unsigned long *regs_in)
{
int i;
for (i=0; i < sizeof(struct sys_pt_regs)/sizeof(PPC_REG); ++i) {
if (i != 34 /* FIXME: PT_ORIG_R3 */ && i <= PT_MQ) {
if (ptrace(PTRACE_POKEUSR, pid, i*4, regs_in->regs[i]) < 0) {
return -errno;
}
}
}
return 0;
}
arch/um/sys-ppc/shared/sysdep/ptrace.h 已删除 100644 → 0
浏览文件 @ 23fc5f15
/*
* Licensed under the GPL
*/
#ifndef __SYS_PTRACE_PPC_H
#define __SYS_PTRACE_PPC_H
#include <linux/types.h>
/* the following taken from <asm-ppc/ptrace.h> */
#ifdef CONFIG_PPC64
#define PPC_REG unsigned long /*long*/
#else
#define PPC_REG unsigned long
#endif
struct sys_pt_regs_s {
PPC_REG gpr[32];
PPC_REG nip;
PPC_REG msr;
PPC_REG orig_gpr3; /* Used for restarting system calls */
PPC_REG ctr;
PPC_REG link;
PPC_REG xer;
PPC_REG ccr;
PPC_REG mq; /* 601 only (not used at present) */
/* Used on APUS to hold IPL value. */
PPC_REG trap; /* Reason for being here */
PPC_REG dar; /* Fault registers */
PPC_REG dsisr;
PPC_REG result; /* Result of a system call */
};
#define NUM_REGS (sizeof(struct sys_pt_regs_s) / sizeof(PPC_REG))
struct sys_pt_regs {
PPC_REG regs[sizeof(struct sys_pt_regs_s) / sizeof(PPC_REG)];
};
#define UM_MAX_REG (PT_FPR0)
#define UM_MAX_REG_OFFSET (UM_MAX_REG * sizeof(PPC_REG))
#define EMPTY_REGS { { [ 0 ... NUM_REGS - 1] = 0 } }
#define UM_REG(r, n) ((r)->regs[n])
#define UM_SYSCALL_RET(r) UM_REG(r, PT_R3)
#define UM_SP(r) UM_REG(r, PT_R1)
#define UM_IP(r) UM_REG(r, PT_NIP)
#define UM_ELF_ZERO(r) UM_REG(r, PT_FPSCR)
#define UM_SYSCALL_NR(r) UM_REG(r, PT_R0)
#define UM_SYSCALL_ARG1(r) UM_REG(r, PT_ORIG_R3)
#define UM_SYSCALL_ARG2(r) UM_REG(r, PT_R4)
#define UM_SYSCALL_ARG3(r) UM_REG(r, PT_R5)
#define UM_SYSCALL_ARG4(r) UM_REG(r, PT_R6)
#define UM_SYSCALL_ARG5(r) UM_REG(r, PT_R7)
#define UM_SYSCALL_ARG6(r) UM_REG(r, PT_R8)
#define UM_SYSCALL_NR_OFFSET (PT_R0 * sizeof(PPC_REG))
#define UM_SYSCALL_RET_OFFSET (PT_R3 * sizeof(PPC_REG))
#define UM_SYSCALL_ARG1_OFFSET (PT_R3 * sizeof(PPC_REG))
#define UM_SYSCALL_ARG2_OFFSET (PT_R4 * sizeof(PPC_REG))
#define UM_SYSCALL_ARG3_OFFSET (PT_R5 * sizeof(PPC_REG))
#define UM_SYSCALL_ARG4_OFFSET (PT_R6 * sizeof(PPC_REG))
#define UM_SYSCALL_ARG5_OFFSET (PT_R7 * sizeof(PPC_REG))
#define UM_SYSCALL_ARG6_OFFSET (PT_R8 * sizeof(PPC_REG))
#define UM_SP_OFFSET (PT_R1 * sizeof(PPC_REG))
#define UM_IP_OFFSET (PT_NIP * sizeof(PPC_REG))
#define UM_ELF_ZERO_OFFSET (PT_R3 * sizeof(PPC_REG))
#define UM_SET_SYSCALL_RETURN(_regs, result) \
do { \
if (result < 0) { \
(_regs)->regs[PT_CCR] |= 0x10000000; \
UM_SYSCALL_RET((_regs)) = -result; \
} else { \
UM_SYSCALL_RET((_regs)) = result; \
} \
} while(0)
extern void shove_aux_table(unsigned long sp);
#define UM_FIX_EXEC_STACK(sp) shove_aux_table(sp);
/* These aren't actually defined. The undefs are just to make sure
* everyone's clear on the concept.
*/
#undef UML_HAVE_GETREGS
#undef UML_HAVE_GETFPREGS
#undef UML_HAVE_SETREGS
#undef UML_HAVE_SETFPREGS
#endif
arch/um/sys-ppc/shared/sysdep/sigcontext.h 已删除 100644 → 0
浏览文件 @ 23fc5f15
/*
* Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __SYS_SIGCONTEXT_PPC_H
#define __SYS_SIGCONTEXT_PPC_H
#define DSISR_WRITE 0x02000000
#define SC_FAULT_ADDR(sc) ({ \
struct sigcontext *_sc = (sc); \
long retval = -1; \
switch (_sc->regs->trap) { \
case 0x300: \
/* data exception */ \
retval = _sc->regs->dar; \
break; \
case 0x400: \
/* instruction exception */ \
retval = _sc->regs->nip; \
break; \
default: \
panic("SC_FAULT_ADDR: unhandled trap type\n"); \
} \
retval; \
})
#define SC_FAULT_WRITE(sc) ({ \
struct sigcontext *_sc = (sc); \
long retval = -1; \
switch (_sc->regs->trap) { \
case 0x300: \
/* data exception */ \
retval = !!(_sc->regs->dsisr & DSISR_WRITE); \
break; \
case 0x400: \
/* instruction exception: not a write */ \
retval = 0; \
break; \
default: \
panic("SC_FAULT_ADDR: unhandled trap type\n"); \
} \
retval; \
})
#define SC_IP(sc) ((sc)->regs->nip)
#define SC_SP(sc) ((sc)->regs->gpr[1])
#define SEGV_IS_FIXABLE(sc) (1)
#endif
arch/um/sys-ppc/shared/sysdep/skas_ptrace.h 已删除 100644 → 0
浏览文件 @ 23fc5f15
/*
* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __SYSDEP_PPC_SKAS_PTRACE_H
#define __SYSDEP_PPC_SKAS_PTRACE_H
struct ptrace_faultinfo {
int is_write;
unsigned long addr;
};
struct ptrace_ldt {
int func;
void *ptr;
unsigned long bytecount;
};
#define PTRACE_LDT 54
#endif
arch/um/sys-ppc/shared/sysdep/syscalls.h 已删除 100644 → 0
浏览文件 @ 23fc5f15
/*
* Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
typedef long syscall_handler_t(unsigned long arg1, unsigned long arg2,
unsigned long arg3, unsigned long arg4,
unsigned long arg5, unsigned long arg6);
#define EXECUTE_SYSCALL(syscall, regs) \
(*sys_call_table[syscall])(UM_SYSCALL_ARG1(&regs), \
UM_SYSCALL_ARG2(&regs), \
UM_SYSCALL_ARG3(&regs), \
UM_SYSCALL_ARG4(&regs), \
UM_SYSCALL_ARG5(&regs), \
UM_SYSCALL_ARG6(&regs))
extern syscall_handler_t sys_mincore;
extern syscall_handler_t sys_madvise;
/* old_mmap needs the correct prototype since syscall_kern.c includes
* this file.
*/
int old_mmap(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long offset);
#define ARCH_SYSCALLS \
[ __NR_modify_ldt ] = sys_ni_syscall, \
[ __NR_pciconfig_read ] = sys_ni_syscall, \
[ __NR_pciconfig_write ] = sys_ni_syscall, \
[ __NR_pciconfig_iobase ] = sys_ni_syscall, \
[ __NR_pivot_root ] = sys_ni_syscall, \
[ __NR_multiplexer ] = sys_ni_syscall, \
[ __NR_mmap ] = old_mmap, \
[ __NR_madvise ] = sys_madvise, \
[ __NR_mincore ] = sys_mincore, \
[ __NR_iopl ] = (syscall_handler_t *) sys_ni_syscall, \
[ __NR_utimes ] = (syscall_handler_t *) sys_utimes, \
[ __NR_fadvise64 ] = (syscall_handler_t *) sys_fadvise64,
#define LAST_ARCH_SYSCALL __NR_fadvise64
arch/um/sys-ppc/sigcontext.c 已删除 100644 → 0
浏览文件 @ 23fc5f15
#include "asm/ptrace.h"
#include "asm/sigcontext.h"
#include <sysdep/ptrace.h>
arch/um/sys-ppc/sysrq.c 已删除 100644 → 0
浏览文件 @ 23fc5f15
/*
* Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk)
* Licensed under the GPL
*/
#include <linux/kernel.h>
#include <linux/smp.h>
#include "asm/ptrace.h"
#include "sysrq.h"
void show_regs(struct pt_regs_subarch *regs)
{
printk("\n");
show_regs_print_info(KERN_DEFAULT);
printk("show_regs(): insert regs here.\n");
#if 0
printk("\n");
printk("EIP: %04x:[<%08lx>] CPU: %d",0xffff & regs->xcs, regs->eip,
smp_processor_id());
if (regs->xcs & 3)
printk(" ESP: %04x:%08lx",0xffff & regs->xss, regs->esp);
printk(" EFLAGS: %08lx\n", regs->eflags);
printk("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
regs->eax, regs->ebx, regs->ecx, regs->edx);
printk("ESI: %08lx EDI: %08lx EBP: %08lx",
regs->esi, regs->edi, regs->ebp);
printk(" DS: %04x ES: %04x\n",
0xffff & regs->xds, 0xffff & regs->xes);
#endif
show_trace(current, &regs->gpr[1]);
}
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