Imported gcc-4.4.3

[msp430-gcc.git] / gcc / config / mips / irix-crti.asm

diff --git a/gcc/config/mips/irix-crti.asm b/gcc/config/mips/irix-crti.asm
new file mode 100644 (file)
index 0000000..992f8b6
--- /dev/null
+++ b/gcc/config/mips/irix-crti.asm
@@ -0,0 +1,58 @@
+       .abicalls
+       .set    noreorder
+       .set    nomacro
+
+/* The GNU and SGI linkers differ in their implementation of -init and -fini.
+   With the GNU linker, there can only be a single -init option, and the
+   linker simply sets DT_INIT to that value.  gcc's initialization and
+   finalization code can go directly in .init, with the prologue and
+   epilogue of the main initialization routine being provided by external
+   object files (*crti.o and *crtn.o in this case).
+
+   The SGI linker instead accepts several -init options.  It will set DT_INIT
+   to a linker-created function (placed in .init) that calls each of the -init
+   functions in turn.  If there is any user code in .init, this linker-created
+   function will be placed after it.  Note that such user code is not treated
+   specially; it will only be called if the -init options arrange for it to
+   be called.
+
+   In theory, the SGI model should allow the crti, crtn and intermediate code
+   to go in .init, just like it can with the GNU linker.  However, doing this
+   seems to confuse the linker and triggers an internal error:
+
+      ld32: FATAL   2  : Internal: at ../../ld/mips_code.c mips_code_fixup()
+        text section overflow!
+
+   (seen with MIPSpro 7.30).  We therefore put everything in a special
+   .gcc_init section instead.  */
+
+       .section .gcc_init,"ax",@progbits
+       .globl  __gcc_init
+__gcc_init:
+#if _MIPS_SIM == _ABIO32
+       addiu   $sp,$sp,-16
+       sw      $31,0($sp)
+#else
+       daddiu  $sp,$sp,-16
+       sd      $31,0($sp)
+       sd      $28,8($sp)
+#endif
+
+       .section .gcc_fini,"ax",@progbits
+       .globl  __gcc_fini
+__gcc_fini:
+#if _MIPS_SIM == _ABIO32
+       addiu   $sp,$sp,-16
+       sw      $31,0($sp)
+#else
+       daddiu  $sp,$sp,-16
+       sd      $31,0($sp)
+       sd      $28,8($sp)
+#endif
+
+/* This object will typically be included in the final link for both
+   shared libraries and executable, and we need to hide the symbols to
+   prevent possible symbol preemption warnings from the SGI linker.  */
+.hidden __gcc_init
+.hidden __gcc_fini
+