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diff --git a/libguile/lightning/lightening/ppc.h b/libguile/lightning/lightening/ppc.h
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+/*
+ * Copyright (C) 2012-2017 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU lightning.
+ *
+ * GNU lightning is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU lightning is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+ * License for more details.
+ *
+ * Authors:
+ * Paulo Cesar Pereira de Andrade
+ */
+
+#ifndef _jit_ppc_h
+#define _jit_ppc_h
+
+#define JIT_HASH_CONSTS 1
+#define JIT_NUM_OPERANDS 3
+
+#if __powerpc__
+# if _CALL_ELF == 2
+/* __BYTE_ORDER == __LITTLE_ENDIAN */
+# define ABI_ELFv2 1
+# endif
+#endif
+
+/*
+ * Types
+ */
+typedef enum {
+#if __ppc__
+# define jit_r(i) (_R11 + (i))
+#else
+# define jit_r(i) (_R28 + (i))
+#endif
+#define jit_r_num() 3
+#if __ppc__
+# define jit_v(i) (_R30 - (i))
+# define jit_v_num() 17
+#else
+# define jit_v(i) (_R27 - (i))
+# define jit_v_num() 14
+#endif
+#define jit_f(i) (_F14 + (i))
+#define jit_f_num() 8
+ _R0,
+#if __ppc__
+# define JIT_R0 _R11
+# define JIT_R1 _R12
+# define JIT_R2 _R13
+#else
+# define JIT_R0 _R28
+# define JIT_R1 _R29
+# define JIT_R2 _R30
+#endif
+ _R11, _R12, _R13, _R2,
+#define JIT_V0 jit_v(0)
+#define JIT_V1 jit_v(1)
+#define JIT_V2 jit_v(2)
+#define JIT_V3 jit_v(3)
+#define JIT_V4 jit_v(4)
+#define JIT_V5 jit_v(5)
+#define JIT_V6 jit_v(6)
+#define JIT_V7 jit_v(7)
+#define JIT_V8 jit_v(8)
+#define JIT_V9 jit_v(9)
+#define JIT_V10 jit_v(10)
+#define JIT_V11 jit_v(11)
+#define JIT_V12 jit_v(12)
+#define JIT_V13 jit_v(13)
+#if __ppc__
+# define JIT_V14 jit_v(14)
+# define JIT_V15 jit_v(15)
+# define JIT_V16 jit_v(16)
+#endif
+ _R14, _R15, _R16, _R17, _R18, _R19, _R20, _R21,
+ _R22, _R23, _R24, _R25, _R26, _R27, _R28, _R29,
+ _R30,
+ _R1,
+#define JIT_FP _R31
+ _R31,
+ _R10, _R9, _R8, _R7, _R6, _R5, _R4, _R3,
+ _F0,
+ _F14, _F15, _F16, _F17, _F18, _F19, _F20, _F21,
+#define JIT_F0 _F14
+#define JIT_F1 _F15
+#define JIT_F2 _F16
+#define JIT_F3 _F17
+#define JIT_F4 _F18
+#define JIT_F5 _F19
+#define JIT_F6 _F20
+#define JIT_F7 _F21
+ /* FIXME _F20-_F31 not (easily) accessible and only _F14-_F21
+ * saved/restored (if used) */
+ _F22, _F23, _F24, _F25, _F26, _F27, _F28, _F29,
+ _F30, _F31,
+ _F13, _F12, _F11, _F10, _F9, _F8, _F7, _F6,
+ _F5, _F4, _F3, _F2, _F1,
+ _NOREG,
+#define JIT_NOREG _NOREG
+} jit_reg_t;
+
+#endif /* _jit_ppc_h */