Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

external/android-libunwind/include/libunwind-ppc32.h

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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		ppc32
+#define UNW_TARGET_PPC32	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_PPC32_* 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;
+
+typedef enum
+  {
+    UNW_PPC32_R0,
+    UNW_PPC32_R1, /* called STACK_POINTER in gcc */
+    UNW_PPC32_R2,
+    UNW_PPC32_R3,
+    UNW_PPC32_R4,
+    UNW_PPC32_R5,
+    UNW_PPC32_R6,
+    UNW_PPC32_R7,
+    UNW_PPC32_R8,
+    UNW_PPC32_R9,
+    UNW_PPC32_R10,
+    UNW_PPC32_R11, /* called STATIC_CHAIN in gcc */
+    UNW_PPC32_R12,
+    UNW_PPC32_R13,
+    UNW_PPC32_R14,
+    UNW_PPC32_R15,
+    UNW_PPC32_R16,
+    UNW_PPC32_R17,
+    UNW_PPC32_R18,
+    UNW_PPC32_R19,
+    UNW_PPC32_R20,
+    UNW_PPC32_R21,
+    UNW_PPC32_R22,
+    UNW_PPC32_R23,
+    UNW_PPC32_R24,
+    UNW_PPC32_R25,
+    UNW_PPC32_R26,
+    UNW_PPC32_R27,
+    UNW_PPC32_R28,
+    UNW_PPC32_R29,
+    UNW_PPC32_R30,
+    UNW_PPC32_R31, /* called HARD_FRAME_POINTER in gcc */
+
+    /* Count Register */
+    UNW_PPC32_CTR = 32,
+    /* Fixed-Point Status and Control Register */
+    UNW_PPC32_XER = 33,
+    /* Condition Register */
+    UNW_PPC32_CCR = 34,
+    /* Machine State Register */
+    //UNW_PPC32_MSR = 35,
+    /* MQ or SPR0, not part of generic Power, part of MPC601 */
+    //UNW_PPC32_MQ = 36,
+    /* Link Register */
+    UNW_PPC32_LR = 36,
+    /* Floating Pointer Status and Control Register */
+    UNW_PPC32_FPSCR = 37,
+
+    UNW_PPC32_F0 = 48,
+    UNW_PPC32_F1,
+    UNW_PPC32_F2,
+    UNW_PPC32_F3,
+    UNW_PPC32_F4,
+    UNW_PPC32_F5,
+    UNW_PPC32_F6,
+    UNW_PPC32_F7,
+    UNW_PPC32_F8,
+    UNW_PPC32_F9,
+    UNW_PPC32_F10,
+    UNW_PPC32_F11,
+    UNW_PPC32_F12,
+    UNW_PPC32_F13,
+    UNW_PPC32_F14,
+    UNW_PPC32_F15,
+    UNW_PPC32_F16,
+    UNW_PPC32_F17,
+    UNW_PPC32_F18,
+    UNW_PPC32_F19,
+    UNW_PPC32_F20,
+    UNW_PPC32_F21,
+    UNW_PPC32_F22,
+    UNW_PPC32_F23,
+    UNW_PPC32_F24,
+    UNW_PPC32_F25,
+    UNW_PPC32_F26,
+    UNW_PPC32_F27,
+    UNW_PPC32_F28,
+    UNW_PPC32_F29,
+    UNW_PPC32_F30,
+    UNW_PPC32_F31,
+
+    UNW_TDEP_LAST_REG = UNW_PPC32_F31,
+
+    UNW_TDEP_IP = UNW_PPC32_LR,
+    UNW_TDEP_SP = UNW_PPC32_R1,
+    UNW_TDEP_EH = UNW_PPC32_R12
+  }
+ppc32_regnum_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.  */
+    /* ANDROID support update. */
+    char __reserved;
+    /* End of ANDROID update. */
+  }
+unw_tdep_save_loc_t;
+
+/* On ppc, 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 ppc32-specific auxiliary proc-info */
+    /* ANDROID support update. */
+    char __reserved;
+    /* End of ANDROID update. */
+  }
+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 */