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-rw-r--r--lib/nxt.ld167
-rw-r--r--lib/sscanf.c49
2 files changed, 216 insertions, 0 deletions
diff --git a/lib/nxt.ld b/lib/nxt.ld
new file mode 100644
index 0000000..e54bc5d
--- /dev/null
+++ b/lib/nxt.ld
@@ -0,0 +1,167 @@
+
+MEMORY
+{
+ CODE (rx) : ORIGIN = 0x00100000, LENGTH = 256k
+ DATA (rwx) : ORIGIN = 0x00200000, LENGTH = 64k
+}
+
+__FIRST_IN_RAM = ORIGIN(DATA);
+__TOP_STACK = ORIGIN(DATA) + LENGTH(DATA);
+
+/* Section Definitions */
+
+SECTIONS
+{
+ /* first section is .text which is used for code */
+ . = ORIGIN(CODE);
+
+ .text :
+ {
+ KEEP(*(.vectorg))
+ . = ALIGN(4);
+ KEEP(*(.init))
+ *(.text .text.*) /* remaining code */
+ *(.gnu.linkonce.t.*)
+ *(.glue_7)
+ *(.glue_7t)
+ *(.gcc_except_table)
+ *(.rodata) /* read-only data (constants) */
+ *(.rodata.*)
+ *(.gnu.linkonce.r.*)
+ . = ALIGN(4);
+ } >CODE
+
+ . = ALIGN(4);
+
+ /* .ctors .dtors are used for c++ constructors/destructors */
+
+ .ctors :
+ {
+ PROVIDE(__ctors_start__ = .);
+ KEEP(*(SORT(.ctors.*)))
+ KEEP(*(.ctors))
+ PROVIDE(__ctors_end__ = .);
+ } >CODE
+
+ .dtors :
+ {
+ PROVIDE(__dtors_start__ = .);
+ KEEP(*(SORT(.dtors.*)))
+ KEEP(*(.dtors))
+ PROVIDE(__dtors_end__ = .);
+ } >CODE
+
+ __exidx_start = . ;
+ .ARM.exidx :
+ {
+ *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+ } >CODE
+ __exidx_end = . ;
+
+ . = ALIGN(4);
+
+ _etext = . ;
+ PROVIDE (etext = .);
+
+ /* .data section which is used for initialized data */
+ .data : AT (_etext)
+ {
+ _data = . ;
+ KEEP(*(.vectmapped))
+ . = ALIGN(4);
+ *(.fastrun .fastrun.*)
+ . = ALIGN(4);
+ SORT(CONSTRUCTORS)
+ . = ALIGN(4);
+ *(.data)
+ *(.data.*)
+ *(.gnu.linkonce.d.*)
+ . = ALIGN(4);
+ } >DATA
+
+ . = ALIGN(4);
+
+ _edata = . ;
+ PROVIDE (edata = .);
+
+ __STARTOFUSERFLASH_FROM_LINKER =
+ ALIGN (LOADADDR (.data) + SIZEOF (.data), 0x100);
+
+ /*
+ * The various debugger stacks.
+ */
+ .stack : ALIGN(8) {
+ /* abort stack */
+ __abort_stack_bottom__ = . ;
+ KEEP(*(.stack.abort))
+ __abort_stack__ = . ;
+ __abort_stack_top__ = . ;
+
+ /* debugger state */
+ __debugger_stack_bottom__ = . ;
+ KEEP(*(.stack.debugger))
+ __debugger_stack__ = . ;
+ __debugger_stack_top__ = . ;
+
+ /* breakpoints */
+ __breakpoints_start__ = . ;
+ KEEP(*(.breakpoints))
+ __breakpoints_end__ = . ;
+ } > DATA
+
+ __breakpoints_num__ = (__breakpoints_end__ - __breakpoints_start__) / 8;
+
+ /* .bss section which is used for uninitialized data */
+ .bss (NOLOAD) :
+ {
+ __bss_start = . ;
+ __bss_start__ = . ;
+ *(.bss)
+ *(.bss.*)
+ *(.gnu.linkonce.b.*)
+ *(COMMON)
+ . = ALIGN(4);
+ } >DATA
+
+ . = ALIGN(4);
+
+ __bss_end__ = . ;
+
+ _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) }
+
+}
diff --git a/lib/sscanf.c b/lib/sscanf.c
new file mode 100644
index 0000000..a4f5e64
--- /dev/null
+++ b/lib/sscanf.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2010 Nicolas Schodet
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+/* NXT source code is using sscanf to parse a float. Newlib sscanf will pull
+ * too many code, so here is a stub which implement just what is used. */
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+int
+sscanf (const char *str, const char *fmt, ...)
+{
+ va_list ap;
+ float *f;
+ char *tailptr;
+ /* Only support use in NXT source code. */
+ if (fmt[0] != '%' || fmt[1] != 'f' || fmt[2] != '\0')
+ return 0;
+ /* Retrieve float pointer. */
+ va_start (ap, fmt);
+ f = va_arg (ap, float *);
+ va_end (ap);
+ /* Parse using the nice strtod. */
+ *f = strtod (str, &tailptr);
+ if (str == tailptr)
+ return 0;
+ else
+ return 1;
+}
+