Pulled in a number of other fixes which were needed to bring the

build up to date.

arch/um/Kconfig

@@ -30,8 +30,18 @@ config RWSEM_GENERIC_SPINLOCK
 	bool
 	default y
 
+menu "Code maturity level options"
+
+config EXPERIMENTAL
+	bool "Prompt for development and/or incomplete code/drivers"
+
+endmenu
+
+
+menu "General Setup"
+
 config MODE_TT
-	bool
+	bool "Tracing thread support"
 	default y
 	help
 	This option controls whether tracing thread support is compiled
@@ -40,7 +50,7 @@ config MODE_TT
 	then it is OK to say N here.
 
 config STATIC_LINK
-	bool
+	bool "Force a static link"
 	default n
 	depends on !MODE_TT
 	help
@@ -52,24 +62,15 @@ config STATIC_LINK
 	here.
 
 config MODE_SKAS
-	bool
+	bool "Separate Kernel Address Space support"
 	default y
+	help
 	This option controls whether skas (separate kernel address space)
 	support is compiled in.  If you have applied the skas patch to the
 	host, then you certainly want to say Y here (and consider saying N
 	to CONFIG_MODE_TT).  Otherwise, it is safe to say Y.  Disabling this
 	option will shrink the UML binary slightly.
 
-menu "Code maturity level options"
-
-config EXPERIMENTAL
-	bool "Prompt for development and/or incomplete code/drivers"
-
-endmenu
-
-
-menu "General Setup"
-
 config NET
 	bool "Networking support"
 
@@ -254,6 +255,10 @@ config DEBUGSYM
         If you're truly short on disk space or don't expect to report any
         bugs back to the UML developers, say N, otherwise say Y.
 
+config FRAME_POINTER
+	bool
+	default y if DEBUGSYM
+
 config PT_PROXY
 	bool "Enable ptrace proxy"
 	depends on XTERM_CHAN && DEBUGSYM

arch/um/Makefile-skas

@@ -12,7 +12,7 @@ LINK-$(CONFIG_GPROF) += $(PROFILE)
 MODE_INCLUDE += -I$(TOPDIR)/$(ARCH_DIR)/kernel/skas/include
 
 LINK_SKAS = -Wl,-rpath,/lib 
-LD_SCRIPT_SKAS = dyn_link.ld
+LD_SCRIPT_SKAS = dyn.lds.s
 
 GEN_HEADERS += $(ARCH_DIR)/kernel/skas/include/skas_ptregs.h
 

arch/um/drivers/line.c

@@ -452,11 +452,19 @@ void line_register_devfs(struct lines *set, struct line_driver *line_driver,
 
 void lines_init(struct line *lines, int nlines)
 {
+	struct line *line;
 	int i;
 
 	for(i = 0; i < nlines; i++){
-		INIT_LIST_HEAD(&lines[i].chan_list);
-		sema_init(&lines[i].sem, 1);
+		line = &lines[i];
+		INIT_LIST_HEAD(&line->chan_list);
+		sema_init(&line->sem, 1);
+		if(line->init_str != NULL){
+			line->init_str = uml_strdup(line->init_str);
+			if(line->init_str == NULL)
+				printk("lines_init - uml_strdup returned "
+				       "NULL\n");
+		}
 	}
 }
 

arch/um/dyn.lds.S

+OUTPUT_FORMAT(ELF_FORMAT)
+OUTPUT_ARCH(ELF_ARCH)
+ENTRY(_start)
+jiffies = jiffies_64;
+
+SEARCH_DIR("/usr/local/i686-pc-linux-gnu/lib"); SEARCH_DIR("/usr/local/lib"); SEARCH_DIR("/lib"); SEARCH_DIR("/usr/lib");
+/* Do we need any of these for elf?
+   __DYNAMIC = 0;    */
+SECTIONS
+{
+  . = START + SIZEOF_HEADERS;
+  .interp         : { *(.interp) }
+  . = ALIGN(4096);
+  __binary_start = .;
+  . = ALIGN(4096);		/* Init code and data */
+  _stext = .;
+  __init_begin = .;
+  .text.init : { *(.text.init) }
+
+  . = ALIGN(4096);
+
+  /* Read-only sections, merged into text segment: */
+  .hash           : { *(.hash) }
+  .dynsym         : { *(.dynsym) }
+  .dynstr         : { *(.dynstr) }
+  .gnu.version    : { *(.gnu.version) }
+  .gnu.version_d  : { *(.gnu.version_d) }
+  .gnu.version_r  : { *(.gnu.version_r) }
+  .rel.init       : { *(.rel.init) }
+  .rela.init      : { *(.rela.init) }
+  .rel.text       : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) }
+  .rela.text      : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }
+  .rel.fini       : { *(.rel.fini) }
+  .rela.fini      : { *(.rela.fini) }
+  .rel.rodata     : { *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) }
+  .rela.rodata    : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) }
+  .rel.data       : { *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) }
+  .rela.data      : { *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) }
+  .rel.tdata	  : { *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) }
+  .rela.tdata	  : { *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) }
+  .rel.tbss	  : { *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) }
+  .rela.tbss	  : { *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) }
+  .rel.ctors      : { *(.rel.ctors) }
+  .rela.ctors     : { *(.rela.ctors) }
+  .rel.dtors      : { *(.rel.dtors) }
+  .rela.dtors     : { *(.rela.dtors) }
+  .rel.got        : { *(.rel.got) }
+  .rela.got       : { *(.rela.got) }
+  .rel.bss        : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
+  .rela.bss       : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
+  .rel.plt        : { *(.rel.plt) }
+  .rela.plt       : { *(.rela.plt) }
+  .init           : {
+    KEEP (*(.init))
+  } =0x90909090
+  .plt            : { *(.plt) }
+  .text           : {
+    *(.text .stub .text.* .gnu.linkonce.t.*)
+    /* .gnu.warning sections are handled specially by elf32.em.  */
+    *(.gnu.warning)
+  } =0x90909090
+  .fini           : {
+    KEEP (*(.fini))
+  } =0x90909090
+
+  .kstrtab : { *(.kstrtab) }
+
+  . = ALIGN(16);		/* Exception table */
+  __start___ex_table = .;
+  __ex_table : { *(__ex_table) }
+  __stop___ex_table = .;
+
+  __start___ksymtab = .;	/* Kernel symbol table */
+  __ksymtab : { *(__ksymtab) }
+  __stop___ksymtab = .;
+
+  PROVIDE (__etext = .);
+  PROVIDE (_etext = .);
+  PROVIDE (etext = .);
+  .rodata         : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
+  .rodata1        : { *(.rodata1) }
+  .eh_frame_hdr : { *(.eh_frame_hdr) }
+
+
+  . = ALIGN(4096);
+  PROVIDE (_sdata = .);
+
+  .unprotected : { *(.unprotected) }
+  . = ALIGN(4096);
+  PROVIDE (_unprotected_end = .);
+
+  . = ALIGN(4096);
+  __uml_setup_start = .;
+  .uml.setup.init : { *(.uml.setup.init) }
+  __uml_setup_end = .;
+
+  __uml_help_start = .;
+  .uml.help.init : { *(.uml.help.init) }
+  __uml_help_end = .;
+
+  __uml_postsetup_start = .;
+  .uml.postsetup.init : { *(.uml.postsetup.init) }
+  __uml_postsetup_end = .;
+
+  __setup_start = .;
+  .setup.init : { *(.init.setup) }
+  __setup_end = .;
+
+  __start___param = .;
+  __param : { *(__param) }
+  __stop___param = .;
+
+  __per_cpu_start = . ; 
+  .data.percpu : { *(.data.percpu) }
+  __per_cpu_end = . ;
+	
+  __initcall_start = .;
+  .initcall.init : {
+	*(.initcall1.init) 
+	*(.initcall2.init) 
+	*(.initcall3.init) 
+	*(.initcall4.init) 
+	*(.initcall5.init) 
+	*(.initcall6.init) 
+	*(.initcall7.init)
+  }
+  __initcall_end = .;
+  __uml_initcall_start = .;
+  .uml.initcall.init : { *(.uml.initcall.init) }
+  __uml_initcall_end = .;
+  __init_end = .;
+  __exitcall_begin = .;
+  .exitcall : { *(.exitcall.exit) }
+  __exitcall_end = .;
+  __uml_exitcall_begin = .;
+  .uml.exitcall : { *(.uml.exitcall.exit) }
+  __uml_exitcall_end = .;
+
+   . = ALIGN(4096);
+   __initramfs_start = .;
+   .init.ramfs : { *(.init.ramfs) }
+   __initramfs_end = .;
+ 
+  .data.init : { *(.data.init) }
+
+  /* Ensure the __preinit_array_start label is properly aligned.  We
+     could instead move the label definition inside the section, but
+     the linker would then create the section even if it turns out to
+     be empty, which isn't pretty.  */
+  . = ALIGN(32 / 8);
+  .preinit_array     : { *(.preinit_array) }
+  .init_array     : { *(.init_array) }
+  .fini_array     : { *(.fini_array) }
+  .data           : {
+    . = ALIGN(KERNEL_STACK_SIZE);		/* init_task */
+    *(.data.init_task)
+    *(.data .data.* .gnu.linkonce.d.*)
+    SORT(CONSTRUCTORS)
+  }
+  .data1          : { *(.data1) }
+  .tdata	  : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
+  .tbss		  : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
+  .eh_frame       : { KEEP (*(.eh_frame)) }
+  .gcc_except_table   : { *(.gcc_except_table) }
+  .dynamic        : { *(.dynamic) }
+  .ctors          : {
+    /* gcc uses crtbegin.o to find the start of
+       the constructors, so we make sure it is
+       first.  Because this is a wildcard, it
+       doesn't matter if the user does not
+       actually link against crtbegin.o; the
+       linker won't look for a file to match a
+       wildcard.  The wildcard also means that it
+       doesn't matter which directory crtbegin.o
+       is in.  */
+    KEEP (*crtbegin.o(.ctors))
+    /* We don't want to include the .ctor section from
+       from the crtend.o file until after the sorted ctors.
+       The .ctor section from the crtend file contains the
+       end of ctors marker and it must be last */
+    KEEP (*(EXCLUDE_FILE (*crtend.o ) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+  }
+  .dtors          : {
+    KEEP (*crtbegin.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+  }
+  .jcr            : { KEEP (*(.jcr)) }
+  .got            : { *(.got.plt) *(.got) }
+  _edata = .;
+  PROVIDE (edata = .);
+  __bss_start = .;
+  .bss            : {
+   *(.dynbss)
+   *(.bss .bss.* .gnu.linkonce.b.*)
+   *(COMMON)
+   /* Align here to ensure that the .bss section occupies space up to
+      _end.  Align after .bss to ensure correct alignment even if the
+      .bss section disappears because there are no input sections.  */
+   . = ALIGN(32 / 8);
+  . = ALIGN(32 / 8);
+  }
+  _end = .;
+  PROVIDE (end = .);
+   /* Stabs debugging sections.  */
+  .stab          0 : { *(.stab) }
+  .stabstr       0 : { *(.stabstr) }
+  .stab.excl     0 : { *(.stab.excl) }
+  .stab.exclstr  0 : { *(.stab.exclstr) }
+  .stab.index    0 : { *(.stab.index) }
+  .stab.indexstr 0 : { *(.stab.indexstr) }
+  .comment       0 : { *(.comment) }
+  /* DWARF debug sections.
+     Symbols in the DWARF debugging sections are relative to the beginning
+     of the section so we begin them at 0.  */
+  /* DWARF 1 */
+  .debug          0 : { *(.debug) }
+  .line           0 : { *(.line) }
+  /* GNU DWARF 1 extensions */
+  .debug_srcinfo  0 : { *(.debug_srcinfo) }
+  .debug_sfnames  0 : { *(.debug_sfnames) }
+  /* DWARF 1.1 and DWARF 2 */
+  .debug_aranges  0 : { *(.debug_aranges) }
+  .debug_pubnames 0 : { *(.debug_pubnames) }
+  /* DWARF 2 */
+  .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
+  .debug_abbrev   0 : { *(.debug_abbrev) }
+  .debug_line     0 : { *(.debug_line) }
+  .debug_frame    0 : { *(.debug_frame) }
+  .debug_str      0 : { *(.debug_str) }
+  .debug_loc      0 : { *(.debug_loc) }
+  .debug_macinfo  0 : { *(.debug_macinfo) }
+  /* SGI/MIPS DWARF 2 extensions */
+  .debug_weaknames 0 : { *(.debug_weaknames) }
+  .debug_funcnames 0 : { *(.debug_funcnames) }
+  .debug_typenames 0 : { *(.debug_typenames) }
+  .debug_varnames  0 : { *(.debug_varnames) }
+}

arch/um/include/sysdep-i386/ptrace.h

@@ -7,8 +7,15 @@
 #define __SYSDEP_I386_PTRACE_H
 
 #include "uml-config.h"
+
+#ifdef CONFIG_MODE_TT
 #include "ptrace-tt.h"
+#endif
+
+#ifdef CONFIG_MODE_SKAS
 #include "ptrace-skas.h"
+#endif
+
 #include "choose-mode.h"
 
 struct uml_pt_regs {

arch/um/include/user_util.h

@@ -61,7 +61,6 @@ extern int start_fork_tramp(void *arg, unsigned long temp_stack,
 			    int clone_flags, int (*tramp)(void *));
 extern int clone_and_wait(int (*fn)(void *), void *arg, void *sp, int flags);
 extern int linux_main(int argc, char **argv);
-extern void remap_data(void *segment_start, void *segment_end, int w);
 extern void set_cmdline(char *cmd);
 extern void input_cb(void (*proc)(void *), void *arg, int arg_len);
 extern int get_pty(void);

arch/um/kernel/Makefile

@@ -3,8 +3,6 @@
 # Licensed under the GPL
 #
 
-EXTRA_TARGETS	:= unmap_fin.o
-
 obj-y = checksum.o config.o exec_kern.o exitcode.o frame_kern.o frame.o \
 	helper.o init_task.o irq.o irq_user.o ksyms.o mem.o mem_user.o \
 	process.o process_kern.o ptrace.o reboot.o resource.o sigio_user.o \
@@ -30,9 +28,6 @@ USER_OBJS := $(filter %_user.o,$(obj-y))  $(user-objs-y) config.o helper.o \
 	process.o tempfile.o time.o tty_log.o umid.o user_util.o user_syms.o
 USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file))
 
-UNMAP_CFLAGS := $(patsubst -pg -DPROFILING,,$(USER_CFLAGS))
-UNMAP_CFLAGS := $(patsubst -fprofile-arcs -ftest-coverage,,$(UNMAP_CFLAGS))
-
 DMODULES-$(CONFIG_MODULES) = -D__CONFIG_MODULES__
 DMODVERSIONS-$(CONFIG_MODVERSIONS) = -D__CONFIG_MODVERSIONS__
 
@@ -49,12 +44,6 @@ CFLAGS_frame.o := $(patsubst -fomit-frame-pointer,,$(USER_CFLAGS))
 $(USER_OBJS) : %.o: %.c
 	$(CC) $(CFLAGS_$@) $(USER_CFLAGS) -c -o $@ $<
 
-$(obj)/unmap.o: $(src)/unmap.c
-	$(CC) $(UNMAP_CFLAGS) -c -o $@ $<
-
-$(obj)/unmap_fin.o : $(src)/unmap.o
-	ld -r -o $@ $< -lc -L/usr/lib
-
 # This has to be separate because it needs be compiled with frame pointers
 # regardless of how the rest of the kernel is built.
 

arch/um/kernel/ptrace.c

@@ -9,7 +9,9 @@
 #include "linux/smp_lock.h"
 #include "linux/security.h"
 #include "linux/ptrace.h"
+#ifdef CONFIG_PROC_MM
 #include "linux/proc_mm.h"
+#endif
 #include "asm/ptrace.h"
 #include "asm/uaccess.h"
 #include "kern_util.h"

arch/um/kernel/skas/include/mode_kern.h

@@ -21,6 +21,8 @@ extern void release_thread_skas(struct task_struct *task);
 extern void exit_thread_skas(void);
 extern void initial_thread_cb_skas(void (*proc)(void *), void *arg);
 extern void init_idle_skas(void);
+extern void flush_tlb_kernel_range_skas(unsigned long start, 
+					unsigned long end);
 extern void flush_tlb_kernel_vm_skas(void);
 extern void __flush_tlb_one_skas(unsigned long addr);
 extern void flush_tlb_range_skas(struct vm_area_struct *vma, 

arch/um/kernel/skas/tlb.c

@@ -67,7 +67,7 @@ static void fix_range(struct mm_struct *mm, unsigned long start_addr,
 	}
 }
 
-static void flush_kernel_vm_range(unsigned long start, unsigned long end)
+void flush_tlb_kernel_range_skas(unsigned long start, unsigned long end)
 {
 	struct mm_struct *mm;
 	pgd_t *pgd;
@@ -116,19 +116,19 @@ static void flush_kernel_vm_range(unsigned long start, unsigned long end)
 
 void flush_tlb_kernel_vm_skas(void)
 {
-	flush_kernel_vm_range(start_vm, end_vm);
+	flush_tlb_kernel_range_skas(start_vm, end_vm);
 }
 
 void __flush_tlb_one_skas(unsigned long addr)
 {
-	flush_kernel_vm_range(addr, addr + PAGE_SIZE);
+	flush_tlb_kernel_range_skas(addr, addr + PAGE_SIZE);
 }
 
 void flush_tlb_range_skas(struct vm_area_struct *vma, unsigned long start, 
 		     unsigned long end)
 {
 	if(vma->vm_mm == NULL)
-		flush_kernel_vm_range(start, end);
+		flush_tlb_kernel_range_skas(start, end);
 	else fix_range(vma->vm_mm, start, end, 0);
 }
 

arch/um/kernel/tlb.c

@@ -21,6 +21,12 @@ void flush_tlb_all(void)
 	flush_tlb_mm(current->mm);
 }
   
+void flush_tlb_kernel_range(unsigned long start, unsigned long end)
+{
+	CHOOSE_MODE_PROC(flush_tlb_kernel_range_tt, 
+			 flush_tlb_kernel_range_skas, start, end);
+}
+
 void flush_tlb_kernel_vm(void)
 {
 	CHOOSE_MODE(flush_tlb_kernel_vm_tt(), flush_tlb_kernel_vm_skas());

arch/um/kernel/tt/Makefile

@@ -3,18 +3,31 @@
 # Licensed under the GPL
 #
 
-obj-y = exec_kern.o exec_user.o gdb.o gdb_kern.o ksyms.o mem.o process_kern.o \
+EXTRA_TARGETS := unmap_fin.o
+
+obj-y = exec_kern.o exec_user.o gdb.o ksyms.o mem.o mem_user.o process_kern.o \
 	syscall_kern.o syscall_user.o time.o tlb.o tracer.o trap_user.o \
 	uaccess_user.o sys-$(SUBARCH)/
 
-obj-$(CONFIG_PT_PROXY) += ptproxy/
+obj-$(CONFIG_PT_PROXY) += gdb_kern.o ptproxy/
 
 export-objs = ksyms.o
 
 USER_OBJS := $(filter %_user.o,$(obj-y)) gdb.o time.o tracer.o
 USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file))
 
+UNMAP_CFLAGS := $(patsubst -pg -DPROFILING,,$(USER_CFLAGS))
+UNMAP_CFLAGS := $(patsubst -fprofile-arcs -ftest-coverage,,$(UNMAP_CFLAGS))
+
 $(USER_OBJS) : %.o: %.c
 	$(CC) $(CFLAGS_$(notdir $@)) $(USER_CFLAGS) -c -o $@ $<
 
+$(O_TARGET) : $(obj)/unmap_fin.o
+
+$(obj)/unmap.o: $(src)/unmap.c
+	$(CC) $(UNMAP_CFLAGS) -c -o $@ $<
+
+$(obj)/unmap_fin.o : $(src)/unmap.o
+	ld -r -o $@ $< -lc -L/usr/lib
+
 clean :

arch/um/kernel/tt/include/mode_kern.h

@@ -22,6 +22,7 @@ extern void release_thread_tt(struct task_struct *task);
 extern void exit_thread_tt(void);
 extern void initial_thread_cb_tt(void (*proc)(void *), void *arg);
 extern void init_idle_tt(void);
+extern void flush_tlb_kernel_range_tt(unsigned long start, unsigned long end);
 extern void flush_tlb_kernel_vm_tt(void);
 extern void __flush_tlb_one_tt(unsigned long addr);
 extern void flush_tlb_range_tt(struct vm_area_struct *vma, 

arch/um/kernel/tt/tlb.c

@@ -132,7 +132,7 @@ static void flush_kernel_vm_range(unsigned long start, unsigned long end,
 	if(updated && update_seq) atomic_inc(&vmchange_seq);
 }
 
-void flush_tlb_kernel_range(unsigned long start, unsigned long end)
+void flush_tlb_kernel_range_tt(unsigned long start, unsigned long end)
 {
         flush_kernel_vm_range(start, end, 1);
 }

arch/um/kernel/user_util.c

@@ -46,31 +46,6 @@ void add_arg(char *cmd_line, char *arg)
 	strcat(cmd_line, arg);
 }
 
-void remap_data(void *segment_start, void *segment_end, int w)
-{
-	void *addr;
-	unsigned long size;
-	int data, prot;
-
-	if(w) prot = PROT_WRITE;
-	else prot = 0;
-	prot |= PROT_READ | PROT_EXEC;
-	size = (unsigned long) segment_end - 
-		(unsigned long) segment_start;
-	data = create_mem_file(size);
-	if((addr = mmap(NULL, size, PROT_WRITE | PROT_READ, 
-			MAP_SHARED, data, 0)) < 0){
-		perror("mapping new data segment");
-		exit(1);
-	}
-	memcpy(addr, segment_start, size);
-	if(switcheroo(data, prot, addr, segment_start, 
-		      size) < 0){
-		printf("switcheroo failed\n");
-		exit(1);
-	}
-}
-
 void stop(void)
 {
 	while(1) sleep(1000000);

arch/um/sys-i386/util/mk_thread_kern.c

+#include "linux/config.h"
 #include "linux/stddef.h"
 #include "linux/sched.h"
 
@@ -12,7 +13,9 @@ int main(int argc, char **argv)
 {
   print_head();
   print_constant_ptr("TASK_DEBUGREGS", THREAD_OFFSET(arch.debugregs));
+#ifdef CONFIG_MODE_TT
   print_constant("TASK_EXTERN_PID", "int", THREAD_OFFSET(mode.tt.extern_pid));
+#endif
   print_tail();
   return(0);
 }

arch/um/uml.lds.S

@@ -9,15 +9,17 @@ SECTIONS
 
   . = ALIGN(4096);
   __binary_start = .;
+#ifdef MODE_TT
   .thread_private : {
     __start_thread_private = .;
     errno = .;
     . += 4;
-    arch/um/kernel/unmap_fin.o (.data)
+    arch/um/kernel/tt/unmap_fin.o (.data)
     __end_thread_private = .;
   }
   . = ALIGN(4096);
-  .remap : { arch/um/kernel/unmap_fin.o (.text) }
+  .remap : { arch/um/kernel/tt/unmap_fin.o (.text) }
+#endif
 
   . = ALIGN(4096);		/* Init code and data */
   _stext = .;