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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/um/sys-x86_64/ptrace.c | |
download | op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/um/sys-x86_64/ptrace.c')
-rw-r--r-- | arch/um/sys-x86_64/ptrace.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c new file mode 100644 index 0000000..8c146b2 --- /dev/null +++ b/arch/um/sys-x86_64/ptrace.c @@ -0,0 +1,138 @@ +/* + * Copyright 2003 PathScale, Inc. + * + * Licensed under the GPL + */ + +#define __FRAME_OFFSETS +#include "asm/ptrace.h" +#include "linux/sched.h" +#include "linux/errno.h" +#include "asm/elf.h" + +/* XXX x86_64 */ +unsigned long not_ss; +unsigned long not_ds; +unsigned long not_es; + +#define SC_SS(r) (not_ss) +#define SC_DS(r) (not_ds) +#define SC_ES(r) (not_es) + +/* determines which flags the user has access to. */ +/* 1 = access 0 = no access */ +#define FLAG_MASK 0x44dd5UL + +int putreg(struct task_struct *child, int regno, unsigned long value) +{ + unsigned long tmp; + +#ifdef TIF_IA32 + /* Some code in the 64bit emulation may not be 64bit clean. + Don't take any chances. */ + if (test_tsk_thread_flag(child, TIF_IA32)) + value &= 0xffffffff; +#endif + switch (regno){ + case FS: + case GS: + case DS: + case ES: + case SS: + case CS: + if (value && (value & 3) != 3) + return -EIO; + value &= 0xffff; + break; + + case FS_BASE: + case GS_BASE: + if (!((value >> 48) == 0 || (value >> 48) == 0xffff)) + return -EIO; + break; + + case EFLAGS: + value &= FLAG_MASK; + tmp = PT_REGS_EFLAGS(&child->thread.regs) & ~FLAG_MASK; + value |= tmp; + break; + } + + PT_REGS_SET(&child->thread.regs, regno, value); + return 0; +} + +unsigned long getreg(struct task_struct *child, int regno) +{ + unsigned long retval = ~0UL; + switch (regno) { + case FS: + case GS: + case DS: + case ES: + case SS: + case CS: + retval = 0xffff; + /* fall through */ + default: + retval &= PT_REG(&child->thread.regs, regno); +#ifdef TIF_IA32 + if (test_tsk_thread_flag(child, TIF_IA32)) + retval &= 0xffffffff; +#endif + } + return retval; +} + +void arch_switch(void) +{ +/* XXX + printk("arch_switch\n"); +*/ +} + +int is_syscall(unsigned long addr) +{ + panic("is_syscall"); +} + +int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu ) +{ + panic("dump_fpu"); + return(1); +} + +int get_fpregs(unsigned long buf, struct task_struct *child) +{ + panic("get_fpregs"); + return(0); +} + +int set_fpregs(unsigned long buf, struct task_struct *child) +{ + panic("set_fpregs"); + return(0); +} + +int get_fpxregs(unsigned long buf, struct task_struct *tsk) +{ + panic("get_fpxregs"); + return(0); +} + +int set_fpxregs(unsigned long buf, struct task_struct *tsk) +{ + panic("set_fxpregs"); + return(0); +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ |