diff options
Diffstat (limited to 'arch/x86/ia32')
| -rw-r--r-- | arch/x86/ia32/Makefile | 25 | ||||
| -rw-r--r-- | arch/x86/ia32/ia32_aout.c | 2 | ||||
| -rw-r--r-- | arch/x86/ia32/ia32_binfmt.c | 5 | ||||
| -rw-r--r-- | arch/x86/ia32/ptrace32.c | 10 |
4 files changed, 32 insertions, 10 deletions
diff --git a/arch/x86/ia32/Makefile b/arch/x86/ia32/Makefile index cdae364..e2edda2 100644 --- a/arch/x86/ia32/Makefile +++ b/arch/x86/ia32/Makefile @@ -18,18 +18,35 @@ $(obj)/syscall32_syscall.o: \ $(foreach F,sysenter syscall,$(obj)/vsyscall-$F.so) # Teach kbuild about targets -targets := $(foreach F,sysenter syscall,vsyscall-$F.o vsyscall-$F.so) +targets := $(foreach F,$(addprefix vsyscall-,sysenter syscall),\ + $F.o $F.so $F.so.dbg) # The DSO images are built using a special linker script quiet_cmd_syscall = SYSCALL $@ - cmd_syscall = $(CC) -m32 -nostdlib -shared -s \ + cmd_syscall = $(CC) -m32 -nostdlib -shared \ $(call ld-option, -Wl$(comma)--hash-style=sysv) \ -Wl,-soname=linux-gate.so.1 -o $@ \ -Wl,-T,$(filter-out FORCE,$^) -$(obj)/vsyscall-sysenter.so $(obj)/vsyscall-syscall.so: \ -$(obj)/vsyscall-%.so: $(src)/vsyscall.lds $(obj)/vsyscall-%.o FORCE +$(obj)/%.so: OBJCOPYFLAGS := -S +$(obj)/%.so: $(obj)/%.so.dbg FORCE + $(call if_changed,objcopy) + +$(obj)/vsyscall-sysenter.so.dbg $(obj)/vsyscall-syscall.so.dbg: \ +$(obj)/vsyscall-%.so.dbg: $(src)/vsyscall.lds $(obj)/vsyscall-%.o FORCE $(call if_changed,syscall) AFLAGS_vsyscall-sysenter.o = -m32 -Wa,-32 AFLAGS_vsyscall-syscall.o = -m32 -Wa,-32 + +vdsos := vdso32-sysenter.so vdso32-syscall.so + +quiet_cmd_vdso_install = INSTALL $@ + cmd_vdso_install = cp $(@:vdso32-%.so=$(obj)/vsyscall-%.so.dbg) \ + $(MODLIB)/vdso/$@ + +$(vdsos): + @mkdir -p $(MODLIB)/vdso + $(call cmd,vdso_install) + +vdso_install: $(vdsos) diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c index 7cf1c29..f82e1a9 100644 --- a/arch/x86/ia32/ia32_aout.c +++ b/arch/x86/ia32/ia32_aout.c @@ -420,6 +420,8 @@ beyond_if: (regs)->eflags = 0x200; (regs)->cs = __USER32_CS; (regs)->ss = __USER32_DS; + regs->r8 = regs->r9 = regs->r10 = regs->r11 = + regs->r12 = regs->r13 = regs->r14 = regs->r15 = 0; set_fs(USER_DS); if (unlikely(current->ptrace & PT_PTRACED)) { if (current->ptrace & PT_TRACE_EXEC) diff --git a/arch/x86/ia32/ia32_binfmt.c b/arch/x86/ia32/ia32_binfmt.c index d3c53e8..118b9f9 100644 --- a/arch/x86/ia32/ia32_binfmt.c +++ b/arch/x86/ia32/ia32_binfmt.c @@ -112,11 +112,8 @@ struct elf_prpsinfo char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ }; -#define __STR(x) #x -#define STR(x) __STR(x) - #define _GET_SEG(x) \ - ({ __u32 seg; asm("movl %%" STR(x) ",%0" : "=r"(seg)); seg; }) + ({ __u32 seg; asm("movl %%" __stringify(x) ",%0" : "=r"(seg)); seg; }) /* Assumes current==process to be dumped */ #define ELF_CORE_COPY_REGS(pr_reg, regs) \ diff --git a/arch/x86/ia32/ptrace32.c b/arch/x86/ia32/ptrace32.c index 4a233ad..f52770e 100644 --- a/arch/x86/ia32/ptrace32.c +++ b/arch/x86/ia32/ptrace32.c @@ -228,6 +228,8 @@ static long ptrace32_siginfo(unsigned request, u32 pid, u32 addr, u32 data) return ret; } +#define COMPAT_GDT_ENTRY_TLS_MIN 6 + asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data) { struct task_struct *child; @@ -246,8 +248,6 @@ asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data) case PTRACE_SYSCALL: case PTRACE_OLDSETOPTIONS: case PTRACE_SETOPTIONS: - case PTRACE_SET_THREAD_AREA: - case PTRACE_GET_THREAD_AREA: return sys_ptrace(request, pid, addr, data); default: @@ -271,6 +271,12 @@ asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data) case PTRACE_SETSIGINFO: case PTRACE_GETSIGINFO: return ptrace32_siginfo(request, pid, addr, data); + + case PTRACE_SET_THREAD_AREA: + case PTRACE_GET_THREAD_AREA: + return sys_ptrace(request, pid, + addr + GDT_ENTRY_TLS_MIN - COMPAT_GDT_ENTRY_TLS_MIN, + data); } child = ptrace_get_task_struct(pid); |
