diff options
Diffstat (limited to 'arch/alpha')
| -rw-r--r-- | arch/alpha/Makefile | 83 | ||||
| -rw-r--r-- | arch/alpha/kernel/entry.S | 9 | ||||
| -rw-r--r-- | arch/alpha/kernel/ptrace.c | 46 | ||||
| -rw-r--r-- | arch/alpha/kernel/vmlinux.lds.S | 260 | ||||
| -rw-r--r-- | arch/alpha/mm/fault.c | 2 |
5 files changed, 157 insertions, 243 deletions
diff --git a/arch/alpha/Makefile b/arch/alpha/Makefile index 2f283b2fb164..63104ebd1806 100644 --- a/arch/alpha/Makefile +++ b/arch/alpha/Makefile @@ -12,73 +12,22 @@ NM := $(NM) -B LDFLAGS_vmlinux := -static -N #-relax CHECKFLAGS += -D__alpha__ -m64 -cflags-y := -pipe -mno-fp-regs -ffixed-8 - -# Determine if we can use the BWX instructions with GAS. -old_gas := $(shell if $(AS) --version 2>&1 | grep 'version 2.7' > /dev/null; then echo y; else echo n; fi) - -ifeq ($(old_gas),y) -$(error The assembler '$(AS)' does not support the BWX instruction) -endif - -# Determine if GCC understands the -mcpu= option. -have_mcpu := $(call cc-option-yn, -mcpu=ev5) -have_mcpu_pca56 := $(call cc-option-yn, -mcpu=pca56) -have_mcpu_ev6 := $(call cc-option-yn, -mcpu=ev6) -have_mcpu_ev67 := $(call cc-option-yn, -mcpu=ev67) -have_msmall_data := $(call cc-option-yn, -msmall-data) - -cflags-$(have_msmall_data) += -msmall-data - -# Turn on the proper cpu optimizations. -ifeq ($(have_mcpu),y) - mcpu_done := n - # If GENERIC, make sure to turn off any instruction set extensions that - # the host compiler might have on by default. Given that EV4 and EV5 - # have the same instruction set, prefer EV5 because an EV5 schedule is - # more likely to keep an EV4 processor busy than vice-versa. - ifeq ($(CONFIG_ALPHA_GENERIC),y) - mcpu := ev5 - mcpu_done := y - endif - ifeq ($(mcpu_done)$(CONFIG_ALPHA_SX164)$(have_mcpu_pca56),nyy) - mcpu := pca56 - mcpu_done := y - endif - ifeq ($(mcpu_done)$(CONFIG_ALPHA_POLARIS)$(have_mcpu_pca56),nyy) - mcpu := pca56 - mcpu_done := y - endif - ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV4),ny) - mcpu := ev4 - mcpu_done := y - endif - ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV56),ny) - mcpu := ev56 - mcpu_done := y - endif - ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV5),ny) - mcpu := ev5 - mcpu_done := y - endif - ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV67)$(have_mcpu_ev67),nyy) - mcpu := ev67 - mcpu_done := y - endif - ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV6),ny) - ifeq ($(have_mcpu_ev6),y) - mcpu := ev6 - else - ifeq ($(have_mcpu_pca56),y) - mcpu := pca56 - else - mcpu=ev56 - endif - endif - mcpu_done := y - endif - cflags-$(mcpu_done) += -mcpu=$(mcpu) -endif +cflags-y := -pipe -mno-fp-regs -ffixed-8 -msmall-data + +cpuflags-$(CONFIG_ALPHA_EV67) := -mcpu=ev67 +cpuflags-$(CONFIG_ALPHA_EV6) := -mcpu=ev6 +cpuflags-$(CONFIG_ALPHA_POLARIS) := -mcpu=pca56 +cpuflags-$(CONFIG_ALPHA_SX164) := -mcpu=pca56 +cpuflags-$(CONFIG_ALPHA_EV56) := -mcpu=ev56 +cpuflags-$(CONFIG_ALPHA_EV5) := -mcpu=ev5 +cpuflags-$(CONFIG_ALPHA_EV4) := -mcpu=ev4 +# If GENERIC, make sure to turn off any instruction set extensions that +# the host compiler might have on by default. Given that EV4 and EV5 +# have the same instruction set, prefer EV5 because an EV5 schedule is +# more likely to keep an EV4 processor busy than vice-versa. +cpuflags-$(CONFIG_ALPHA_GENERIC) := -mcpu=ev5 + +cflags-y += $(cpuflags-y) # For TSUNAMI, we must have the assembler not emulate our instructions. diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S index debc8f03886c..5fc61e281ac7 100644 --- a/arch/alpha/kernel/entry.S +++ b/arch/alpha/kernel/entry.S @@ -917,15 +917,6 @@ sys_pipe: .end sys_pipe .align 4 - .globl sys_ptrace - .ent sys_ptrace -sys_ptrace: - .prologue 0 - mov $sp, $20 - jmp $31, do_sys_ptrace -.end sys_ptrace - - .align 4 .globl sys_execve .ent sys_execve sys_execve: diff --git a/arch/alpha/kernel/ptrace.c b/arch/alpha/kernel/ptrace.c index 83a781842266..1e9ad52c460e 100644 --- a/arch/alpha/kernel/ptrace.c +++ b/arch/alpha/kernel/ptrace.c @@ -260,38 +260,12 @@ void ptrace_disable(struct task_struct *child) ptrace_cancel_bpt(child); } -asmlinkage long -do_sys_ptrace(long request, long pid, long addr, long data, - struct pt_regs *regs) +long arch_ptrace(struct task_struct *child, long request, long addr, long data) { - struct task_struct *child; unsigned long tmp; size_t copied; long ret; - lock_kernel(); - DBG(DBG_MEM, ("request=%ld pid=%ld addr=0x%lx data=0x%lx\n", - request, pid, addr, data)); - if (request == PTRACE_TRACEME) { - ret = ptrace_traceme(); - goto out_notsk; - } - - child = ptrace_get_task_struct(pid); - if (IS_ERR(child)) { - ret = PTR_ERR(child); - goto out_notsk; - } - - if (request == PTRACE_ATTACH) { - ret = ptrace_attach(child); - goto out; - } - - ret = ptrace_check_attach(child, request == PTRACE_KILL); - if (ret < 0) - goto out; - switch (request) { /* When I and D space are separate, these will need to be fixed. */ case PTRACE_PEEKTEXT: /* read word at location addr. */ @@ -301,13 +275,13 @@ do_sys_ptrace(long request, long pid, long addr, long data, if (copied != sizeof(tmp)) break; - regs->r0 = 0; /* special return: no errors */ + force_successful_syscall_return(); ret = tmp; break; /* Read register number ADDR. */ case PTRACE_PEEKUSR: - regs->r0 = 0; /* special return: no errors */ + force_successful_syscall_return(); ret = get_reg(child, addr); DBG(DBG_MEM, ("peek $%ld->%#lx\n", addr, ret)); break; @@ -353,7 +327,7 @@ do_sys_ptrace(long request, long pid, long addr, long data, /* make sure single-step breakpoint is gone. */ ptrace_cancel_bpt(child); wake_up_process(child); - goto out; + break; case PTRACE_SINGLESTEP: /* execute single instruction. */ ret = -EIO; @@ -366,20 +340,12 @@ do_sys_ptrace(long request, long pid, long addr, long data, wake_up_process(child); /* give it a chance to run. */ ret = 0; - goto out; - - case PTRACE_DETACH: /* detach a process that was attached. */ - ret = ptrace_detach(child, data); - goto out; + break; default: ret = ptrace_request(child, request, addr, data); - goto out; + break; } - out: - put_task_struct(child); - out_notsk: - unlock_kernel(); return ret; } diff --git a/arch/alpha/kernel/vmlinux.lds.S b/arch/alpha/kernel/vmlinux.lds.S index 7af07d3ad5f0..55c05b511f4c 100644 --- a/arch/alpha/kernel/vmlinux.lds.S +++ b/arch/alpha/kernel/vmlinux.lds.S @@ -1,4 +1,5 @@ #include <asm-generic/vmlinux.lds.h> +#include <asm/page.h> OUTPUT_FORMAT("elf64-alpha") OUTPUT_ARCH(alpha) @@ -8,138 +9,145 @@ jiffies = jiffies_64; SECTIONS { #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS - . = 0xfffffc0000310000; + . = 0xfffffc0000310000; #else - . = 0xfffffc0001010000; + . = 0xfffffc0001010000; #endif - _text = .; /* Text and read-only data */ - .text : { + _text = .; /* Text and read-only data */ + .text : { *(.text.head) - TEXT_TEXT - SCHED_TEXT - LOCK_TEXT - *(.fixup) - *(.gnu.warning) - } :kernel - _etext = .; /* End of text section */ - - . = ALIGN(16); - __start___ex_table = .; /* Exception table */ - __ex_table : { *(__ex_table) } - __stop___ex_table = .; - - NOTES :kernel :note - .dummy : { *(.dummy) } :kernel - - RODATA - - /* Will be freed after init */ - . = ALIGN(8192); /* Init code and data */ - __init_begin = .; - .init.text : { - _sinittext = .; - *(.init.text) - _einittext = .; - } - .init.data : { *(.init.data) } - - . = ALIGN(16); - __setup_start = .; - .init.setup : { *(.init.setup) } - __setup_end = .; - - . = ALIGN(8); - __initcall_start = .; - .initcall.init : { - INITCALLS - } - __initcall_end = .; + TEXT_TEXT + SCHED_TEXT + LOCK_TEXT + *(.fixup) + *(.gnu.warning) + } :kernel + _etext = .; /* End of text section */ + + /* Exception table */ + . = ALIGN(16); + __ex_table : { + __start___ex_table = .; + *(__ex_table) + __stop___ex_table = .; + } + + NOTES :kernel :note + .dummy : { + *(.dummy) + } :kernel + + RODATA + + /* Will be freed after init */ + . = ALIGN(PAGE_SIZE); + /* Init code and data */ + __init_begin = .; + .init.text : { + _sinittext = .; + *(.init.text) + _einittext = .; + } + .init.data : { + *(.init.data) + } + + . = ALIGN(16); + .init.setup : { + __setup_start = .; + *(.init.setup) + __setup_end = .; + } + + . = ALIGN(8); + .initcall.init : { + __initcall_start = .; + INITCALLS + __initcall_end = .; + } #ifdef CONFIG_BLK_DEV_INITRD - . = ALIGN(8192); - __initramfs_start = .; - .init.ramfs : { *(.init.ramfs) } - __initramfs_end = .; + . = ALIGN(PAGE_SIZE); + .init.ramfs : { + __initramfs_start = .; + *(.init.ramfs) + __initramfs_end = .; + } #endif - . = ALIGN(8); - .con_initcall.init : { - __con_initcall_start = .; - *(.con_initcall.init) - __con_initcall_end = .; - } - - . = ALIGN(8); - SECURITY_INIT - - PERCPU(8192) - - . = ALIGN(2*8192); - __init_end = .; - /* Freed after init ends here */ - - /* Note 2 page alignment above. */ - .data.init_thread : { *(.data.init_thread) } - - . = ALIGN(8192); - .data.page_aligned : { *(.data.page_aligned) } - - . = ALIGN(64); - .data.cacheline_aligned : { *(.data.cacheline_aligned) } - - _data = .; - .data : { /* Data */ - DATA_DATA - CONSTRUCTORS - } - - .got : { *(.got) } - .sdata : { *(.sdata) } - - _edata = .; /* End of data section */ - - __bss_start = .; - .sbss : { *(.sbss) *(.scommon) } - .bss : { *(.bss) *(COMMON) } - __bss_stop = .; - - _end = .; - - /* Sections to be discarded */ - /DISCARD/ : { *(.exit.text) *(.exit.data) *(.exitcall.exit) } - - .mdebug 0 : { *(.mdebug) } - .note 0 : { *(.note) } - .comment 0 : { *(.comment) } - - /* Stabs debugging sections */ - .stab 0 : { *(.stab) } - .stabstr 0 : { *(.stabstr) } - .stab.excl 0 : { *(.stab.excl) } - .stab.exclstr 0 : { *(.stab.exclstr) } - .stab.index 0 : { *(.stab.index) } - .stab.indexstr 0 : { *(.stab.indexstr) } - /* DWARF 1 */ - .debug 0 : { *(.debug) } - .line 0 : { *(.line) } - /* GNU DWARF 1 extensions */ - .debug_srcinfo 0 : { *(.debug_srcinfo) } - .debug_sfnames 0 : { *(.debug_sfnames) } - /* DWARF 1.1 and DWARF 2 */ - .debug_aranges 0 : { *(.debug_aranges) } - .debug_pubnames 0 : { *(.debug_pubnames) } - /* DWARF 2 */ - .debug_info 0 : { *(.debug_info) } - .debug_abbrev 0 : { *(.debug_abbrev) } - .debug_line 0 : { *(.debug_line) } - .debug_frame 0 : { *(.debug_frame) } - .debug_str 0 : { *(.debug_str) } - .debug_loc 0 : { *(.debug_loc) } - .debug_macinfo 0 : { *(.debug_macinfo) } - /* SGI/MIPS DWARF 2 extensions */ - .debug_weaknames 0 : { *(.debug_weaknames) } - .debug_funcnames 0 : { *(.debug_funcnames) } - .debug_typenames 0 : { *(.debug_typenames) } - .debug_varnames 0 : { *(.debug_varnames) } + . = ALIGN(8); + .con_initcall.init : { + __con_initcall_start = .; + *(.con_initcall.init) + __con_initcall_end = .; + } + + . = ALIGN(8); + SECURITY_INIT + + PERCPU(PAGE_SIZE) + + . = ALIGN(2 * PAGE_SIZE); + __init_end = .; + /* Freed after init ends here */ + + /* Note 2 page alignment above. */ + .data.init_thread : { + *(.data.init_thread) + } + + . = ALIGN(PAGE_SIZE); + .data.page_aligned : { + *(.data.page_aligned) + } + + . = ALIGN(64); + .data.cacheline_aligned : { + *(.data.cacheline_aligned) + } + + _data = .; + /* Data */ + .data : { + DATA_DATA + CONSTRUCTORS + } + + .got : { + *(.got) + } + .sdata : { + *(.sdata) + } + _edata = .; /* End of data section */ + + __bss_start = .; + .sbss : { + *(.sbss) + *(.scommon) + } + .bss : { + *(.bss) + *(COMMON) + } + __bss_stop = .; + _end = .; + + /* Sections to be discarded */ + /DISCARD/ : { + *(.exit.text) + *(.exit.data) + *(.exitcall.exit) + } + + .mdebug 0 : { + *(.mdebug) + } + .note 0 : { + *(.note) + } + + STABS_DEBUG + DWARF_DEBUG } diff --git a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c index a0e18da594d9..25154df3055a 100644 --- a/arch/alpha/mm/fault.c +++ b/arch/alpha/mm/fault.c @@ -197,7 +197,7 @@ do_page_fault(unsigned long address, unsigned long mmcsr, current->comm, current->pid); if (!user_mode(regs)) goto no_context; - do_exit(SIGKILL); + do_group_exit(SIGKILL); do_sigbus: /* Send a sigbus, regardless of whether we were in kernel |