diff options
Diffstat (limited to 'arch/um/sys-x86_64')
| -rw-r--r-- | arch/um/sys-x86_64/bugs.c | 104 | ||||
| -rw-r--r-- | arch/um/sys-x86_64/fault.c | 30 | ||||
| -rw-r--r-- | arch/um/sys-x86_64/signal.c | 32 | ||||
| -rw-r--r-- | arch/um/sys-x86_64/user-offsets.c | 6 |
4 files changed, 54 insertions, 118 deletions
diff --git a/arch/um/sys-x86_64/bugs.c b/arch/um/sys-x86_64/bugs.c index fdce7ea98ca..09547889037 100644 --- a/arch/um/sys-x86_64/bugs.c +++ b/arch/um/sys-x86_64/bugs.c @@ -4,12 +4,7 @@ * Licensed under the GPL */ -#include "linux/sched.h" -#include "linux/errno.h" -#include "asm/system.h" -#include "asm/pda.h" #include "sysdep/ptrace.h" -#include "os.h" void arch_init_thread(void) { @@ -21,102 +16,5 @@ void arch_check_bugs(void) int arch_handle_signal(int sig, union uml_pt_regs *regs) { - return(0); + return 0; } - -#define MAXTOKEN 64 - -/* Set during early boot */ -int host_has_cmov = 1; -int host_has_xmm = 0; - -static char token(int fd, char *buf, int len, char stop) -{ - int n; - char *ptr, *end, c; - - ptr = buf; - end = &buf[len]; - do { - n = os_read_file(fd, ptr, sizeof(*ptr)); - c = *ptr++; - if(n != sizeof(*ptr)){ - if(n == 0) return(0); - printk("Reading /proc/cpuinfo failed, err = %d\n", -n); - if(n < 0) - return(n); - else - return(-EIO); - } - } while((c != '\n') && (c != stop) && (ptr < end)); - - if(ptr == end){ - printk("Failed to find '%c' in /proc/cpuinfo\n", stop); - return(-1); - } - *(ptr - 1) = '\0'; - return(c); -} - -static int find_cpuinfo_line(int fd, char *key, char *scratch, int len) -{ - int n; - char c; - - scratch[len - 1] = '\0'; - while(1){ - c = token(fd, scratch, len - 1, ':'); - if(c <= 0) - return(0); - else if(c != ':'){ - printk("Failed to find ':' in /proc/cpuinfo\n"); - return(0); - } - - if(!strncmp(scratch, key, strlen(key))) - return(1); - - do { - n = os_read_file(fd, &c, sizeof(c)); - if(n != sizeof(c)){ - printk("Failed to find newline in " - "/proc/cpuinfo, err = %d\n", -n); - return(0); - } - } while(c != '\n'); - } - return(0); -} - -int cpu_feature(char *what, char *buf, int len) -{ - int fd, ret = 0; - - fd = os_open_file("/proc/cpuinfo", of_read(OPENFLAGS()), 0); - if(fd < 0){ - printk("Couldn't open /proc/cpuinfo, err = %d\n", -fd); - return(0); - } - - if(!find_cpuinfo_line(fd, what, buf, len)){ - printk("Couldn't find '%s' line in /proc/cpuinfo\n", what); - goto out_close; - } - - token(fd, buf, len, '\n'); - ret = 1; - - out_close: - os_close_file(fd); - return(ret); -} - -/* 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: - */ diff --git a/arch/um/sys-x86_64/fault.c b/arch/um/sys-x86_64/fault.c index cee1513c5c3..4636b1465b6 100644 --- a/arch/um/sys-x86_64/fault.c +++ b/arch/um/sys-x86_64/fault.c @@ -4,20 +4,24 @@ * Licensed under the GPL */ -#include "user.h" +#include "sysdep/ptrace.h" -int arch_fixup(unsigned long address, void *sc_ptr) +/* These two are from asm-um/uaccess.h and linux/module.h, check them. */ +struct exception_table_entry { - /* XXX search_exception_tables() */ + unsigned long insn; + unsigned long fixup; +}; + +const struct exception_table_entry *search_exception_tables(unsigned long add); +int arch_fixup(unsigned long address, union uml_pt_regs *regs) +{ + const struct exception_table_entry *fixup; + + fixup = search_exception_tables(address); + if(fixup != 0){ + UPT_IP(regs) = fixup->fixup; + return(1); + } 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: - */ diff --git a/arch/um/sys-x86_64/signal.c b/arch/um/sys-x86_64/signal.c index af2f017617b..fe8ec04d35b 100644 --- a/arch/um/sys-x86_64/signal.c +++ b/arch/um/sys-x86_64/signal.c @@ -20,6 +20,36 @@ #include "skas.h" +void copy_sc(union uml_pt_regs *regs, void *from) +{ + struct sigcontext *sc = from; + +#define GETREG(regs, regno, sc, regname) \ + (regs)->skas.regs[(regno) / sizeof(unsigned long)] = (sc)->regname + + GETREG(regs, R8, sc, r8); + GETREG(regs, R9, sc, r9); + GETREG(regs, R10, sc, r10); + GETREG(regs, R11, sc, r11); + GETREG(regs, R12, sc, r12); + GETREG(regs, R13, sc, r13); + GETREG(regs, R14, sc, r14); + GETREG(regs, R15, sc, r15); + GETREG(regs, RDI, sc, rdi); + GETREG(regs, RSI, sc, rsi); + GETREG(regs, RBP, sc, rbp); + GETREG(regs, RBX, sc, rbx); + GETREG(regs, RDX, sc, rdx); + GETREG(regs, RAX, sc, rax); + GETREG(regs, RCX, sc, rcx); + GETREG(regs, RSP, sc, rsp); + GETREG(regs, RIP, sc, rip); + GETREG(regs, EFLAGS, sc, eflags); + GETREG(regs, CS, sc, cs); + +#undef GETREG +} + static int copy_sc_from_user_skas(struct pt_regs *regs, struct sigcontext __user *from) { @@ -51,7 +81,7 @@ static int copy_sc_from_user_skas(struct pt_regs *regs, #undef GETREG - return(err); + return err; } int copy_sc_to_user_skas(struct sigcontext __user *to, diff --git a/arch/um/sys-x86_64/user-offsets.c b/arch/um/sys-x86_64/user-offsets.c index 899cebb57c3..0d5fd764c21 100644 --- a/arch/um/sys-x86_64/user-offsets.c +++ b/arch/um/sys-x86_64/user-offsets.c @@ -2,6 +2,7 @@ #include <stddef.h> #include <signal.h> #include <sys/poll.h> +#include <sys/mman.h> #define __FRAME_OFFSETS #include <asm/ptrace.h> #include <asm/types.h> @@ -57,7 +58,6 @@ void foo(void) OFFSET(HOST_SC_SS, sigcontext, ss); #endif - DEFINE_LONGS(HOST_FRAME_SIZE, FRAME_SIZE); DEFINE(HOST_FP_SIZE, sizeof(struct _fpstate) / sizeof(unsigned long)); DEFINE(HOST_XFP_SIZE, 0); DEFINE_LONGS(HOST_RBX, RBX); @@ -94,4 +94,8 @@ void foo(void) DEFINE(UM_POLLIN, POLLIN); DEFINE(UM_POLLPRI, POLLPRI); DEFINE(UM_POLLOUT, POLLOUT); + + DEFINE(UM_PROT_READ, PROT_READ); + DEFINE(UM_PROT_WRITE, PROT_WRITE); + DEFINE(UM_PROT_EXEC, PROT_EXEC); } |