20000317 sourceware import

1 files changed, 146 insertions, 0 deletions

diff --git a/libgloss/sparc/erc32.ld b/libgloss/sparc/erc32.ld
new file mode 100644
index 000000000..179dcc07c
--- /dev/null
+++ b/libgloss/sparc/erc32.ld
@@ -0,0 +1,146 @@
+/*
+ *uncomment this if you want the linker to output srecords.
+OUTPUT_FORMAT(srec)
+ *
+ */
+STARTUP(traps.o)
+INPUT(sim-crt0.o)
+OUTPUT_ARCH(sparc)
+SEARCH_DIR(.)
+__DYNAMIC  =  0;
+GROUP(-lc -lsim -lgcc)
+
+/*
+ * The memory map looks like this:
+ * +--------------------+ <- low memory
+ * | .text              |
+ * |        _stext       |
+ * |        _etext      |
+ * |        ctor list   | the ctor and dtor lists are for
+ * |        dtor list   | C++ support
+ * |        _end_text   |
+ * +--------------------+
+ * | .data              | initialized data goes here
+ * |        _sdata      |
+ * |        _edata      |
+ * +--------------------+
+ * | .bss               |
+ * |        __bss_start | start of bss, cleared by crt0
+ * |        _end        | start of heap, used by sbrk()
+ * +--------------------+
+ * |    heap space      |
+ * |        _ENDHEAP    |
+ * |    stack space     | 
+ * |        __stack     | top of stack
+ * +--------------------+ <- high memory
+ */
+
+/*
+ * User modifiable values:
+ *
+ * _CLOCK_SPEED               in Mhz (used to program the counter/timers)
+ *
+ * _PROM_SIZE                 size of PROM (permissible values are 4K, 8K, 16K
+ *                               32K, 64K, 128K, 256K, and 512K)
+ * _RAM_SIZE                  size of RAM (permissible values are 256K, 512K,
+ *                               1MB, 2Mb, 4Mb, 8Mb, 16Mb, and 32Mb)
+ *
+ * These symbols are only used in assembler code, so they only need to
+ * be listed once. They should always be refered to without SYM().
+ */
+
+_CLOCK_SPEED = 10;
+
+_PROM_SIZE = 4M;
+_RAM_SIZE = 2M;
+
+_RAM_START = 0x02020000;
+_RAM_END = _RAM_START + _RAM_SIZE;
+_STACK_SIZE = (16 * 1024);
+_PROM_START = 0x00000000;
+_PROM_END = _PROM_START + _PROM_SIZE;
+
+
+/*
+ *  Base address of the on-CPU peripherals
+ */
+
+_ERC32_MEC = 0x01f80000;
+
+/*
+ * Setup the memory map for the SIS simulator.
+ * stack grows up towards low memory. 
+ */
+/*
+MEMORY
+{
+  rom       : ORIGIN = 0x00000000, LENGTH = 4M
+  ram (rwx) : ORIGIN = 0x02000000, LENGTH = 2M
+}
+*/
+
+__stack = _RAM_START + _RAM_SIZE - 4 * 16;
+__trap_stack = (_RAM_START + _RAM_SIZE - 4 * 16) - _STACK_SIZE;
+
+/*
+ * All the symbols that might be accessed from C code need to be
+ * listed twice, once with an additional underscore. aout format needs
+ * and extra underscore, whereas coff & elf doesn't. This is to work
+ * with both.
+ */
+SECTIONS
+{
+  .text 0x02000000 :  {
+    stext = .;
+    _stext = .;
+    *(.text)
+     _etext  =  .;
+    __CTOR_LIST__ = .;
+    LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)
+    *(.ctors)
+    LONG(0)
+    __CTOR_END__ = .;
+    __DTOR_LIST__ = .;
+    LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2)
+    *(.dtors)
+    LONG(0)
+    __DTOR_END__ = .;
+    *(.lit)
+    *(.shdata)
+    _endtext = .;
+  }  > ram
+  .shbss SIZEOF(.text) + ADDR(.text) :	{
+    *(.shbss)
+  } 
+  .talias :	 { }  > ram
+  .data : {
+    sdata  =  .;
+    _sdata  =  .;
+    *(.data)
+    edata  =  .;
+    _edata  =  .;
+  } > ram
+  .bss SIZEOF(.data) + ADDR(.data) :
+  {
+   sbss = . ;
+   _sbss = . ;
+   __bss_start = ALIGN(0x8);
+   *(.bss)
+   *(COMMON)
+   end = ALIGN(0x8);
+   _end = ALIGN(0x8);
+   __end = ALIGN(0x8);
+   ebss = .;
+   _ebss = .;
+  }
+  .mstack  : { }  > ram
+  .rstack  : { }  > ram
+  .stab  0 (NOLOAD) : 
+  {
+    [ .stab ]
+  }
+  .stabstr  0 (NOLOAD) :
+  {
+    [ .stabstr ]
+  }
+}