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Add temporary stubs for libunwind

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Justine Tunney 2022-06-22 07:11:08 -07:00
parent 9545062175
commit 1235ad6006
2 changed files with 79 additions and 0 deletions
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37
test/libc/runtime/unwind.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "test/libc/runtime/unwind.h"
// temporary stubs for libunwind
uintptr_t _Unwind_GetCFA(struct _Unwind_Context *ctx) {
return 0;
}
uintptr_t _Unwind_GetIP(struct _Unwind_Context *ctx) {
return 0;
}
_Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn fn, void *arg) {
return _URC_NORMAL_STOP;
}
void *_Unwind_FindEnclosingFunction(void *arg) {
return NULL;
}

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test/libc/runtime/unwind.h Normal file
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#ifndef COSMOPOLITAN_TEST_LIBC_RUNTIME_UNWIND_H_
#define COSMOPOLITAN_TEST_LIBC_RUNTIME_UNWIND_H_
#define UNW_TDEP_CURSOR_LEN 127
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
typedef enum {
_URC_NO_REASON = 0,
_URC_FOREIGN_EXCEPTION_CAUGHT = 1,
_URC_FATAL_PHASE2_ERROR = 2,
_URC_FATAL_PHASE1_ERROR = 3,
_URC_NORMAL_STOP = 4,
_URC_END_OF_STACK = 5,
_URC_HANDLER_FOUND = 6,
_URC_INSTALL_CONTEXT = 7,
_URC_CONTINUE_UNWIND = 8
} _Unwind_Reason_Code;
typedef uint64_t unw_word_t;
typedef struct unw_cursor {
unw_word_t opaque[UNW_TDEP_CURSOR_LEN];
} unw_cursor_t;
struct _Unwind_Context {
unw_cursor_t cursor;
int end_of_stack;
};
typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn)(struct _Unwind_Context *,
void *);
uintptr_t _Unwind_GetCFA(struct _Unwind_Context *);
uintptr_t _Unwind_GetIP(struct _Unwind_Context *);
_Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn, void *);
void *_Unwind_FindEnclosingFunction(void *);
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_TEST_LIBC_RUNTIME_UNWIND_H_ */