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authorJeff Johnston <jjohnstn@redhat.com>2002-07-12 17:55:04 +0000
committerJeff Johnston <jjohnstn@redhat.com>2002-07-12 17:55:04 +0000
commitce823baba072bc727e8f94d269e917e35172eac2 (patch)
treec254b57f3e32ed0272540eeae0729fc77be0ef68 /libgloss/mips/cfe_prestart.S
parent451e452847554155d2bb9867dc00fb204a519f78 (diff)
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2002-07-12 Chris Demetriou <cgd@broadcom.com>
* mips/Makefile.in (GENOBJS2): New variable to name other commonly used objects. (DVEOBJS, JMR3904OBJS): Reference GENOBJS2. * mips/Makefile.in: Add support for Broadcom CFE firmware. * mips/configure.in: (mipsisa32*-*-*, *): Likewise. * mips/configure: Regenerate. * mips/cfe.c: New file. * mips/cfe.ld: New file. * mips/cfe_api.c: New file. * mips/cfe_api.h: New file. * mips/cfe_api_int.h: New file. * mips/cfe_error.h: New file. * mips/cfe_prestart.S: New file.
Diffstat (limited to 'libgloss/mips/cfe_prestart.S')
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diff --git a/libgloss/mips/cfe_prestart.S b/libgloss/mips/cfe_prestart.S
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+/*
+ * cfe_prestart.S -- startup file for MIPS running CFE.
+ * Derived from crt0.S.
+ *
+ * Copyright (c) 1995, 1996, 1997 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+#ifdef __mips16
+/* This file contains 32 bit assembly code. */
+ .set nomips16
+#endif
+
+#include "regs.S"
+
+/* This is for referencing addresses that are not in the .sdata or
+ .sbss section under embedded-pic, or before we've set up gp. */
+#ifdef __mips_embedded_pic
+# ifdef __mips64
+# define LA(t,x) la t,x-PICBASE ; daddu t,s0,t
+# else
+# define LA(t,x) la t,x-PICBASE ; addu t,s0,t
+# endif
+#else /* __mips_embedded_pic */
+# define LA(t,x) la t,x
+#endif /* __mips_embedded_pic */
+
+ .globl __cfe_handle
+ .globl __cfe_entrypt
+
+ .text
+ .align 2
+
+ .globl _prestart
+ .ent _prestart
+_prestart:
+ .set noreorder
+#ifdef __mips_embedded_pic
+ PICBASE = .+8
+ bal PICBASE
+ nop
+ move s0,$31
+#endif
+
+ /* These are actually pointers, but they're guaranteed to be
+ in compatibility space and it's just easier to store them
+ as words ("unsigned int") than worry about the actual
+ pointer size of the runtime we're building. */
+ LA (v0, __cfe_handle)
+ sw a0, 0(v0)
+ LA (v0, __cfe_entrypt)
+ sw a2, 0(v0)
+
+ LA (v0, _start)
+ jr v0
+ nop
+ .end _prestart