diff options
-rw-r--r-- | arch/um/include/shared/os.h | 5 | ||||
-rw-r--r-- | arch/um/os-Linux/Makefile | 4 | ||||
-rw-r--r-- | arch/um/os-Linux/tls.c | 35 | ||||
-rw-r--r-- | arch/x86/um/os-Linux/tls.c | 34 | ||||
-rw-r--r-- | arch/x86/um/shared/sysdep/tls.h | 3 |
5 files changed, 38 insertions, 43 deletions
diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h index caa66619a9b4..89b686c1a3ea 100644 --- a/arch/um/include/shared/os.h +++ b/arch/um/include/shared/os.h | |||
@@ -10,7 +10,6 @@ | |||
10 | #include "irq_user.h" | 10 | #include "irq_user.h" |
11 | #include "longjmp.h" | 11 | #include "longjmp.h" |
12 | #include "mm_id.h" | 12 | #include "mm_id.h" |
13 | #include "sysdep/tls.h" | ||
14 | 13 | ||
15 | #define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR)) | 14 | #define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR)) |
16 | 15 | ||
@@ -212,10 +211,6 @@ extern int run_helper_thread(int (*proc)(void *), void *arg, | |||
212 | extern int helper_wait(int pid); | 211 | extern int helper_wait(int pid); |
213 | 212 | ||
214 | 213 | ||
215 | /* tls.c */ | ||
216 | extern int os_set_thread_area(user_desc_t *info, int pid); | ||
217 | extern int os_get_thread_area(user_desc_t *info, int pid); | ||
218 | |||
219 | /* umid.c */ | 214 | /* umid.c */ |
220 | extern int umid_file_name(char *name, char *buf, int len); | 215 | extern int umid_file_name(char *name, char *buf, int len); |
221 | extern int set_umid(char *name); | 216 | extern int set_umid(char *name); |
diff --git a/arch/um/os-Linux/Makefile b/arch/um/os-Linux/Makefile index 015d00057663..dd764101e488 100644 --- a/arch/um/os-Linux/Makefile +++ b/arch/um/os-Linux/Makefile | |||
@@ -5,13 +5,13 @@ | |||
5 | 5 | ||
6 | obj-y = aio.o execvp.o file.o helper.o irq.o main.o mem.o process.o \ | 6 | obj-y = aio.o execvp.o file.o helper.o irq.o main.o mem.o process.o \ |
7 | registers.o sigio.o signal.o start_up.o time.o tty.o \ | 7 | registers.o sigio.o signal.o start_up.o time.o tty.o \ |
8 | umid.o tls.o user_syms.o util.o drivers/ skas/ | 8 | umid.o user_syms.o util.o drivers/ skas/ |
9 | 9 | ||
10 | obj-$(CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA) += elf_aux.o | 10 | obj-$(CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA) += elf_aux.o |
11 | 11 | ||
12 | USER_OBJS := $(user-objs-y) aio.o elf_aux.o execvp.o file.o helper.o irq.o \ | 12 | USER_OBJS := $(user-objs-y) aio.o elf_aux.o execvp.o file.o helper.o irq.o \ |
13 | main.o mem.o process.o registers.o sigio.o signal.o start_up.o time.o \ | 13 | main.o mem.o process.o registers.o sigio.o signal.o start_up.o time.o \ |
14 | tty.o tls.o umid.o util.o | 14 | tty.o umid.o util.o |
15 | 15 | ||
16 | CFLAGS_user_syms.o += -DSUBARCH_$(SUBARCH) | 16 | CFLAGS_user_syms.o += -DSUBARCH_$(SUBARCH) |
17 | 17 | ||
diff --git a/arch/um/os-Linux/tls.c b/arch/um/os-Linux/tls.c deleted file mode 100644 index 73277801ef14..000000000000 --- a/arch/um/os-Linux/tls.c +++ /dev/null | |||
@@ -1,35 +0,0 @@ | |||
1 | #include <errno.h> | ||
2 | #include <sys/ptrace.h> | ||
3 | #include "sysdep/tls.h" | ||
4 | |||
5 | /* TLS support - we basically rely on the host's one.*/ | ||
6 | |||
7 | #ifndef PTRACE_GET_THREAD_AREA | ||
8 | #define PTRACE_GET_THREAD_AREA 25 | ||
9 | #endif | ||
10 | |||
11 | #ifndef PTRACE_SET_THREAD_AREA | ||
12 | #define PTRACE_SET_THREAD_AREA 26 | ||
13 | #endif | ||
14 | |||
15 | int os_set_thread_area(user_desc_t *info, int pid) | ||
16 | { | ||
17 | int ret; | ||
18 | |||
19 | ret = ptrace(PTRACE_SET_THREAD_AREA, pid, info->entry_number, | ||
20 | (unsigned long) info); | ||
21 | if (ret < 0) | ||
22 | ret = -errno; | ||
23 | return ret; | ||
24 | } | ||
25 | |||
26 | int os_get_thread_area(user_desc_t *info, int pid) | ||
27 | { | ||
28 | int ret; | ||
29 | |||
30 | ret = ptrace(PTRACE_GET_THREAD_AREA, pid, info->entry_number, | ||
31 | (unsigned long) info); | ||
32 | if (ret < 0) | ||
33 | ret = -errno; | ||
34 | return ret; | ||
35 | } | ||
diff --git a/arch/x86/um/os-Linux/tls.c b/arch/x86/um/os-Linux/tls.c index 281e83ecce3d..82276b6071af 100644 --- a/arch/x86/um/os-Linux/tls.c +++ b/arch/x86/um/os-Linux/tls.c | |||
@@ -1,15 +1,25 @@ | |||
1 | #include <errno.h> | 1 | #include <errno.h> |
2 | #include <linux/unistd.h> | 2 | #include <linux/unistd.h> |
3 | 3 | ||
4 | #include <sys/ptrace.h> | ||
4 | #include <sys/syscall.h> | 5 | #include <sys/syscall.h> |
5 | #include <unistd.h> | 6 | #include <unistd.h> |
6 | 7 | ||
7 | #include "sysdep/tls.h" | 8 | #include "sysdep/tls.h" |
8 | 9 | ||
10 | #ifndef PTRACE_GET_THREAD_AREA | ||
11 | #define PTRACE_GET_THREAD_AREA 25 | ||
12 | #endif | ||
13 | |||
14 | #ifndef PTRACE_SET_THREAD_AREA | ||
15 | #define PTRACE_SET_THREAD_AREA 26 | ||
16 | #endif | ||
17 | |||
9 | /* Checks whether host supports TLS, and sets *tls_min according to the value | 18 | /* Checks whether host supports TLS, and sets *tls_min according to the value |
10 | * valid on the host. | 19 | * valid on the host. |
11 | * i386 host have it == 6; x86_64 host have it == 12, for i386 emulation. */ | 20 | * i386 host have it == 6; x86_64 host have it == 12, for i386 emulation. */ |
12 | void check_host_supports_tls(int *supports_tls, int *tls_min) { | 21 | void check_host_supports_tls(int *supports_tls, int *tls_min) |
22 | { | ||
13 | /* Values for x86 and x86_64.*/ | 23 | /* Values for x86 and x86_64.*/ |
14 | int val[] = {GDT_ENTRY_TLS_MIN_I386, GDT_ENTRY_TLS_MIN_X86_64}; | 24 | int val[] = {GDT_ENTRY_TLS_MIN_I386, GDT_ENTRY_TLS_MIN_X86_64}; |
15 | int i; | 25 | int i; |
@@ -33,3 +43,25 @@ void check_host_supports_tls(int *supports_tls, int *tls_min) { | |||
33 | 43 | ||
34 | *supports_tls = 0; | 44 | *supports_tls = 0; |
35 | } | 45 | } |
46 | |||
47 | int os_set_thread_area(user_desc_t *info, int pid) | ||
48 | { | ||
49 | int ret; | ||
50 | |||
51 | ret = ptrace(PTRACE_SET_THREAD_AREA, pid, info->entry_number, | ||
52 | (unsigned long) info); | ||
53 | if (ret < 0) | ||
54 | ret = -errno; | ||
55 | return ret; | ||
56 | } | ||
57 | |||
58 | int os_get_thread_area(user_desc_t *info, int pid) | ||
59 | { | ||
60 | int ret; | ||
61 | |||
62 | ret = ptrace(PTRACE_GET_THREAD_AREA, pid, info->entry_number, | ||
63 | (unsigned long) info); | ||
64 | if (ret < 0) | ||
65 | ret = -errno; | ||
66 | return ret; | ||
67 | } | ||
diff --git a/arch/x86/um/shared/sysdep/tls.h b/arch/x86/um/shared/sysdep/tls.h index db2ae9c12e23..f2f30bd67b9b 100644 --- a/arch/x86/um/shared/sysdep/tls.h +++ b/arch/x86/um/shared/sysdep/tls.h | |||
@@ -29,6 +29,9 @@ typedef struct user_desc user_desc_t; | |||
29 | 29 | ||
30 | # endif /* __KERNEL__ */ | 30 | # endif /* __KERNEL__ */ |
31 | 31 | ||
32 | extern int os_set_thread_area(user_desc_t *info, int pid); | ||
33 | extern int os_get_thread_area(user_desc_t *info, int pid); | ||
34 | |||
32 | #ifdef __i386__ | 35 | #ifdef __i386__ |
33 | #define GDT_ENTRY_TLS_MIN_I386 6 | 36 | #define GDT_ENTRY_TLS_MIN_I386 6 |
34 | #define GDT_ENTRY_TLS_MIN_X86_64 12 | 37 | #define GDT_ENTRY_TLS_MIN_X86_64 12 |