967747bbc0
There are no remaining callers of set_fs(), so CONFIG_SET_FS can be removed globally, along with the thread_info field and any references to it. This turns access_ok() into a cheaper check against TASK_SIZE_MAX. As CONFIG_SET_FS is now gone, drop all remaining references to set_fs()/get_fs(), mm_segment_t, user_addr_max() and uaccess_kernel(). Acked-by: Sam Ravnborg <sam@ravnborg.org> # for sparc32 changes Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Tested-by: Sergey Matyukevich <sergey.matyukevich@synopsys.com> # for arc changes Acked-by: Stafford Horne <shorne@gmail.com> # [openrisc, asm-generic] Acked-by: Dinh Nguyen <dinguyen@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
61 lines
1022 B
ArmAsm
61 lines
1022 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/sys.h>
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#include <linux/init.h>
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#include <asm/unistd.h>
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#include <asm/setup.h>
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#include <asm/linkage.h>
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#include <asm/asm-offsets.h>
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#include <asm/thread_info.h>
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#include <asm/errno.h>
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#if defined(CONFIG_CPU_H8300H)
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.h8300h
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#define SYSCR 0xfee012
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#define IRAMTOP 0xffff20
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#endif
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#if defined(CONFIG_CPU_H8S)
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.h8300s
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#define INTCR 0xffff31
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#define IRAMTOP 0xffc000
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#endif
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__HEAD
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.global _start
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_start:
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mov.l #IRAMTOP,sp
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/* .bss clear */
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mov.l #_sbss,er5
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mov.l #_ebss,er4
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sub.l er5,er4
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shlr er4
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shlr er4
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sub.l er2,er2
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1:
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mov.l er2,@er5
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adds #4,er5
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dec.l #1,er4
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bne 1b
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jsr @h8300_fdt_init
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/* linux kernel start */
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#if defined(CONFIG_CPU_H8300H)
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ldc #0xd0,ccr /* running kernel */
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mov.l #SYSCR,er0
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bclr #3,@er0
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#endif
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#if defined(CONFIG_CPU_H8S)
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ldc #0x07,exr
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bclr #4,@INTCR:8
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bset #5,@INTCR:8 /* Interrupt mode 2 */
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ldc #0x90,ccr /* running kernel */
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#endif
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mov.l #init_thread_union,sp
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add.l #0x2000,sp
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jsr @start_kernel
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1:
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bra 1b
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.end
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