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+/* libunwind - a platform-independent unwind library
+ Copyright (C) 2006-2007 IBM
+ Contributed by
+ Corey Ashford <cjashfor@us.ibm.com>
+ Jose Flavio Aguilar Paulino <jflavio@br.ibm.com> <joseflavio@gmail.com>
+
+ Copied from libunwind-x86_64.h, modified slightly for building
+ frysk successfully on ppc64, by Wu Zhou <woodzltc@cn.ibm.com>
+ Will be replaced when libunwind is ready on ppc64 platform.
+
+This file is part of libunwind.
+
+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. */
+
+#ifndef LIBUNWIND_H
+#define LIBUNWIND_H
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+#include <inttypes.h>
+#include <ucontext.h>
+
+#define UNW_TARGET ppc64
+#define UNW_TARGET_PPC64 1
+
+#define _U_TDEP_QP_TRUE 0 /* see libunwind-dynamic.h */
+
+/*
+ * This needs to be big enough to accommodate "struct cursor", while
+ * leaving some slack for future expansion. Changing this value will
+ * require recompiling all users of this library. Stack allocation is
+ * relatively cheap and unwind-state copying is relatively rare, so we want
+ * to err on making it rather too big than too small.
+ *
+ * To simplify this whole process, we are at least initially taking the
+ * tack that UNW_PPC64_* map straight across to the .eh_frame column register
+ * numbers. These register numbers come from gcc's source in
+ * gcc/config/rs6000/rs6000.h
+ *
+ * UNW_TDEP_CURSOR_LEN is in terms of unw_word_t size. Since we have 115
+ * elements in the loc array, each sized 2 * unw_word_t, plus the rest of
+ * the cursor struct, this puts us at about 2 * 115 + 40 = 270. Let's
+ * round that up to 280.
+ */
+
+#define UNW_TDEP_CURSOR_LEN 280
+
+#if __WORDSIZE==32
+typedef uint32_t unw_word_t;
+typedef int32_t unw_sword_t;
+#else
+typedef uint64_t unw_word_t;
+typedef int64_t unw_sword_t;
+#endif
+
+typedef long double unw_tdep_fpreg_t;
+
+/*
+ * Vector register (in PowerPC64 used for AltiVec registers)
+ */
+typedef struct {
+ uint64_t halves[2];
+} unw_tdep_vreg_t;
+
+typedef enum
+ {
+ UNW_PPC64_R0,
+ UNW_PPC64_R1, /* called STACK_POINTER in gcc */
+ UNW_PPC64_R2,
+ UNW_PPC64_R3,
+ UNW_PPC64_R4,
+ UNW_PPC64_R5,
+ UNW_PPC64_R6,
+ UNW_PPC64_R7,
+ UNW_PPC64_R8,
+ UNW_PPC64_R9,
+ UNW_PPC64_R10,
+ UNW_PPC64_R11, /* called STATIC_CHAIN in gcc */
+ UNW_PPC64_R12,
+ UNW_PPC64_R13,
+ UNW_PPC64_R14,
+ UNW_PPC64_R15,
+ UNW_PPC64_R16,
+ UNW_PPC64_R17,
+ UNW_PPC64_R18,
+ UNW_PPC64_R19,
+ UNW_PPC64_R20,
+ UNW_PPC64_R21,
+ UNW_PPC64_R22,
+ UNW_PPC64_R23,
+ UNW_PPC64_R24,
+ UNW_PPC64_R25,
+ UNW_PPC64_R26,
+ UNW_PPC64_R27,
+ UNW_PPC64_R28,
+ UNW_PPC64_R29,
+ UNW_PPC64_R30,
+ UNW_PPC64_R31, /* called HARD_FRAME_POINTER in gcc */
+
+ UNW_PPC64_F0 = 32,
+ UNW_PPC64_F1,
+ UNW_PPC64_F2,
+ UNW_PPC64_F3,
+ UNW_PPC64_F4,
+ UNW_PPC64_F5,
+ UNW_PPC64_F6,
+ UNW_PPC64_F7,
+ UNW_PPC64_F8,
+ UNW_PPC64_F9,
+ UNW_PPC64_F10,
+ UNW_PPC64_F11,
+ UNW_PPC64_F12,
+ UNW_PPC64_F13,
+ UNW_PPC64_F14,
+ UNW_PPC64_F15,
+ UNW_PPC64_F16,
+ UNW_PPC64_F17,
+ UNW_PPC64_F18,
+ UNW_PPC64_F19,
+ UNW_PPC64_F20,
+ UNW_PPC64_F21,
+ UNW_PPC64_F22,
+ UNW_PPC64_F23,
+ UNW_PPC64_F24,
+ UNW_PPC64_F25,
+ UNW_PPC64_F26,
+ UNW_PPC64_F27,
+ UNW_PPC64_F28,
+ UNW_PPC64_F29,
+ UNW_PPC64_F30,
+ UNW_PPC64_F31,
+ /* Note that there doesn't appear to be an .eh_frame register column
+ for the FPSCR register. I don't know why this is. Since .eh_frame
+ info is what this implementation uses for unwinding, we have no way
+ to unwind this register, and so we will not expose an FPSCR register
+ number in the libunwind API.
+ */
+
+ UNW_PPC64_LR = 65,
+ UNW_PPC64_CTR = 66,
+ UNW_PPC64_ARG_POINTER = 67,
+
+ UNW_PPC64_CR0 = 68,
+ UNW_PPC64_CR1,
+ UNW_PPC64_CR2,
+ UNW_PPC64_CR3,
+ UNW_PPC64_CR4,
+ /* CR5 .. CR7 are currently unused */
+ UNW_PPC64_CR5,
+ UNW_PPC64_CR6,
+ UNW_PPC64_CR7,
+
+ UNW_PPC64_XER = 76,
+
+ UNW_PPC64_V0 = 77,
+ UNW_PPC64_V1,
+ UNW_PPC64_V2,
+ UNW_PPC64_V3,
+ UNW_PPC64_V4,
+ UNW_PPC64_V5,
+ UNW_PPC64_V6,
+ UNW_PPC64_V7,
+ UNW_PPC64_V8,
+ UNW_PPC64_V9,
+ UNW_PPC64_V10,
+ UNW_PPC64_V11,
+ UNW_PPC64_V12,
+ UNW_PPC64_V13,
+ UNW_PPC64_V14,
+ UNW_PPC64_V15,
+ UNW_PPC64_V16,
+ UNW_PPC64_V17,
+ UNW_PPC64_V18,
+ UNW_PPC64_V19,
+ UNW_PPC64_V20,
+ UNW_PPC64_V21,
+ UNW_PPC64_V22,
+ UNW_PPC64_V23,
+ UNW_PPC64_V24,
+ UNW_PPC64_V25,
+ UNW_PPC64_V26,
+ UNW_PPC64_V27,
+ UNW_PPC64_V28,
+ UNW_PPC64_V29,
+ UNW_PPC64_V30,
+ UNW_PPC64_V31,
+
+ UNW_PPC64_VRSAVE = 109,
+ UNW_PPC64_VSCR = 110,
+ UNW_PPC64_SPE_ACC = 111,
+ UNW_PPC64_SPEFSCR = 112,
+
+ /* frame info (read-only) */
+ UNW_PPC64_FRAME_POINTER,
+ UNW_PPC64_NIP,
+
+
+ UNW_TDEP_LAST_REG = UNW_PPC64_NIP,
+
+ UNW_TDEP_IP = UNW_PPC64_NIP,
+ UNW_TDEP_SP = UNW_PPC64_R1,
+ UNW_TDEP_EH = UNW_PPC64_R12
+ }
+ppc64_regnum_t;
+
+typedef enum
+ {
+ UNW_PPC64_ABI_ELFv1,
+ UNW_PPC64_ABI_ELFv2
+ }
+ppc64_abi_t;
+
+/*
+ * According to David Edelsohn, GNU gcc uses R3, R4, R5, and maybe R6 for
+ * passing parameters to exception handlers.
+ */
+
+#define UNW_TDEP_NUM_EH_REGS 4
+
+typedef struct unw_tdep_save_loc
+ {
+ /* Additional target-dependent info on a save location. */
+ }
+unw_tdep_save_loc_t;
+
+/* On ppc64, we can directly use ucontext_t as the unwind context. */
+typedef ucontext_t unw_tdep_context_t;
+
+/* XXX this is not ideal: an application should not be prevented from
+ using the "getcontext" name just because it's using libunwind. We
+ can't just use __getcontext() either, because that isn't exported
+ by glibc... */
+#define unw_tdep_getcontext(uc) (getcontext (uc), 0)
+
+#include "libunwind-dynamic.h"
+
+typedef struct
+ {
+ /* no ppc64-specific auxiliary proc-info */
+ }
+unw_tdep_proc_info_t;
+
+#include "libunwind-common.h"
+
+#define unw_tdep_is_fpreg UNW_ARCH_OBJ(is_fpreg)
+extern int unw_tdep_is_fpreg (int);
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}
+#endif
+
+#endif /* LIBUNWIND_H */
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