1 /* libunwind - a platform-independent unwind library 2 Copyright (C) 2002-2004 Hewlett-Packard Co 3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com> 4 5 Modified for s390x by Michael Munday <mike.munday@ibm.com> 6 7 This file is part of libunwind. 8 9 Permission is hereby granted, free of charge, to any person obtaining 10 a copy of this software and associated documentation files (the 11 "Software"), to deal in the Software without restriction, including 12 without limitation the rights to use, copy, modify, merge, publish, 13 distribute, sublicense, and/or sell copies of the Software, and to 14 permit persons to whom the Software is furnished to do so, subject to 15 the following conditions: 16 17 The above copyright notice and this permission notice shall be 18 included in all copies or substantial portions of the Software. 19 20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 21 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 23 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 24 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 25 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 26 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ 27 28 #ifndef LIBUNWIND_H 29 #define LIBUNWIND_H 30 31 #if defined(__cplusplus) || defined(c_plusplus) 32 extern "C" { 33 #endif 34 35 #include <sys/types.h> 36 #include <inttypes.h> 37 #include <ucontext.h> 38 39 #define UNW_TARGET s390x 40 #define UNW_TARGET_S390X 1 41 42 #define _U_TDEP_QP_TRUE 0 /* see libunwind-dynamic.h */ 43 44 /* This needs to be big enough to accommodate "struct cursor", while 45 leaving some slack for future expansion. Changing this value will 46 require recompiling all users of this library. Stack allocation is 47 relatively cheap and unwind-state copying is relatively rare, so we 48 want to err on making it rather too big than too small. */ 49 #define UNW_TDEP_CURSOR_LEN 384 50 51 typedef uint64_t unw_word_t; 52 typedef int64_t unw_sword_t; 53 54 typedef double unw_tdep_fpreg_t; 55 56 typedef enum 57 { 58 /* general purpose registers */ 59 UNW_S390X_R0, 60 UNW_S390X_R1, 61 UNW_S390X_R2, 62 UNW_S390X_R3, 63 UNW_S390X_R4, 64 UNW_S390X_R5, 65 UNW_S390X_R6, 66 UNW_S390X_R7, 67 UNW_S390X_R8, 68 UNW_S390X_R9, 69 UNW_S390X_R10, 70 UNW_S390X_R11, 71 UNW_S390X_R12, 72 UNW_S390X_R13, 73 UNW_S390X_R14, 74 UNW_S390X_R15, 75 76 /* floating point registers */ 77 UNW_S390X_F0, 78 UNW_S390X_F1, 79 UNW_S390X_F2, 80 UNW_S390X_F3, 81 UNW_S390X_F4, 82 UNW_S390X_F5, 83 UNW_S390X_F6, 84 UNW_S390X_F7, 85 UNW_S390X_F8, 86 UNW_S390X_F9, 87 UNW_S390X_F10, 88 UNW_S390X_F11, 89 UNW_S390X_F12, 90 UNW_S390X_F13, 91 UNW_S390X_F14, 92 UNW_S390X_F15, 93 94 /* PSW */ 95 UNW_S390X_IP, 96 97 UNW_TDEP_LAST_REG = UNW_S390X_IP, 98 99 /* TODO: access, vector registers */ 100 101 /* frame info (read-only) */ 102 UNW_S390X_CFA, 103 104 UNW_TDEP_IP = UNW_S390X_IP, 105 UNW_TDEP_SP = UNW_S390X_R15, 106 107 /* TODO: placeholders */ 108 UNW_TDEP_EH = UNW_S390X_R0, 109 } 110 s390x_regnum_t; 111 112 #define UNW_TDEP_NUM_EH_REGS 2 /* XXX Not sure what this means */ 113 114 typedef struct unw_tdep_save_loc 115 { 116 /* Additional target-dependent info on a save location. */ 117 char unused; 118 } 119 unw_tdep_save_loc_t; 120 121 /* On s390x, we can directly use ucontext_t as the unwind context. */ 122 typedef ucontext_t unw_tdep_context_t; 123 124 typedef struct 125 { 126 /* no s390x-specific auxiliary proc-info */ 127 char unused; 128 } 129 unw_tdep_proc_info_t; 130 131 #include "libunwind-dynamic.h" 132 #include "libunwind-common.h" 133 134 #define unw_tdep_getcontext UNW_ARCH_OBJ(getcontext) 135 #define unw_tdep_is_fpreg UNW_ARCH_OBJ(is_fpreg) 136 137 extern int unw_tdep_getcontext (unw_tdep_context_t *); 138 extern int unw_tdep_is_fpreg (int); 139 140 #if defined(__cplusplus) || defined(c_plusplus) 141 } 142 #endif 143 144 #endif /* LIBUNWIND_H */ 145