Differential D30901 Diff 91353 sys/amd64/linux32/linux32_sysvec.c

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sys/amd64/linux32/linux32_sysvec.c

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static void linux_sendsig(sig_t catcher, ksiginfo_t ksi, sigset_t mask);		static void linux_sendsig(sig_t catcher, ksiginfo_t ksi, sigset_t mask);
static void linux_exec_setregs(struct thread *td,		static void linux_exec_setregs(struct thread *td,
struct image_params *imgp, uintptr_t stack);		struct image_params *imgp, uintptr_t stack);
static int linux_on_exec_vmspace(struct proc *p,		static int linux_on_exec_vmspace(struct proc *p,
struct image_params *imgp);		struct image_params *imgp);
static void linux_exec_sysvec_init(void *param);		static void linux_exec_sysvec_init(void *param);
static void linux32_fixlimit(struct rlimit *rl, int which);		static void linux32_fixlimit(struct rlimit *rl, int which);
static bool linux32_trans_osrel(const Elf_Note note, int32_t osrel);		static bool linux32_trans_osrel(const Elf_Note note, int32_t osrel);
static void linux_vdso_install(void *param);		static void linux_vdso_install(const void *param);
static void linux_vdso_deinstall(void *param);		static void linux_vdso_deinstall(const void *param);
static void linux_vdso_reloc(char *mapping, Elf_Addr offset);		static void linux_vdso_reloc(char *mapping, Elf_Addr offset);
static void linux32_set_syscall_retval(struct thread *td, int error);		static void linux32_set_syscall_retval(struct thread *td, int error);

#define LINUX_T_UNKNOWN 255		#define LINUX_T_UNKNOWN 255
static int _bsd_to_linux_trapcode[] = {		static int _bsd_to_linux_trapcode[] = {
LINUX_T_UNKNOWN, /* 0 */		LINUX_T_UNKNOWN, /* 0 */
6, /* 1 T_PRIVINFLT */		6, /* 1 T_PRIVINFLT */
LINUX_T_UNKNOWN, /* 2 */		LINUX_T_UNKNOWN, /* 2 */
▲ Show 20 Lines • Show All 848 Lines • ▼ Show 20 Lines	linux_exec_sysvec_init(void *param)
*ktsc_selector = linux_vdso_tsc_selector_idx();		*ktsc_selector = linux_vdso_tsc_selector_idx();
if (bootverbose)		if (bootverbose)
printf("Linux i386 vDSO tsc_selector: %u\n", *ktsc_selector);		printf("Linux i386 vDSO tsc_selector: %u\n", *ktsc_selector);
}		}
SYSINIT(elf_linux_exec_sysvec_init, SI_SUB_EXEC, SI_ORDER_ANY,		SYSINIT(elf_linux_exec_sysvec_init, SI_SUB_EXEC, SI_ORDER_ANY,
linux_exec_sysvec_init, &elf_linux_sysvec);		linux_exec_sysvec_init, &elf_linux_sysvec);

static void		static void
linux_vdso_install(void *param)		linux_vdso_install(const void *param)
{		{
char *vdso_start = &_binary_linux32_vdso_so_o_start;		char *vdso_start = &_binary_linux32_vdso_so_o_start;
char *vdso_end = &_binary_linux32_vdso_so_o_end;		char *vdso_end = &_binary_linux32_vdso_so_o_end;

linux_szsigcode = vdso_end - vdso_start;		linux_szsigcode = vdso_end - vdso_start;
MPASS(linux_szsigcode <= LINUX32_VDSOPAGE_SIZE);		MPASS(linux_szsigcode <= LINUX32_VDSOPAGE_SIZE);

linux_vdso_base = LINUX32_VDSOPAGE;		linux_vdso_base = LINUX32_VDSOPAGE;

__elfN(linux_vdso_fixup)(vdso_start, linux_vdso_base);		__elfN(linux_vdso_fixup)(vdso_start, linux_vdso_base);

linux_vdso_obj = __elfN(linux_shared_page_init)		linux_vdso_obj = __elfN(linux_shared_page_init)
(&linux_vdso_mapping, LINUX32_VDSOPAGE_SIZE);		(&linux_vdso_mapping, LINUX32_VDSOPAGE_SIZE);
bcopy(vdso_start, linux_vdso_mapping, linux_szsigcode);		bcopy(vdso_start, linux_vdso_mapping, linux_szsigcode);

linux_vdso_reloc(linux_vdso_mapping, linux_vdso_base);		linux_vdso_reloc(linux_vdso_mapping, linux_vdso_base);
}		}
SYSINIT(elf_linux_vdso_init, SI_SUB_EXEC, SI_ORDER_FIRST,		SYSINIT(elf_linux_vdso_init, SI_SUB_EXEC, SI_ORDER_FIRST,
linux_vdso_install, NULL);		linux_vdso_install, NULL);

static void		static void
linux_vdso_deinstall(void *param)		linux_vdso_deinstall(const void *param)
{		{

__elfN(linux_shared_page_fini)(linux_vdso_obj,		__elfN(linux_shared_page_fini)(linux_vdso_obj,
linux_vdso_mapping, LINUX32_VDSOPAGE_SIZE);		linux_vdso_mapping, LINUX32_VDSOPAGE_SIZE);
}		}
SYSUNINIT(elf_linux_vdso_uninit, SI_SUB_EXEC, SI_ORDER_FIRST,		SYSUNINIT(elf_linux_vdso_uninit, SI_SUB_EXEC, SI_ORDER_FIRST,
linux_vdso_deinstall, NULL);		linux_vdso_deinstall, NULL);

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