Jonas Devlieghere
59d60d0960
On WebAssembly clang only wires a 0- or 2-argument main to the program entry point: EmitMainVoidAlias emits the __main_void alias for a no-argument main, and the 2-argument form is mangled to __main_argc_argv. A 3-argument main(argc, argv, envp) matches neither, so main is never connected to the entry point and is left as an undefined-weak stub whose body is `unreachable`. The affected inferiors trap with "Exception: unreachable" before reaching main (even when run outside the debugger) so any test using them fails on wasm. Drop the unused third parameter, and where the environment is actually iterated read it from `environ` instead. The inferiors now run on WebAssembly and behave identically on other platforms.
43 lines
1.5 KiB
C++
43 lines
1.5 KiB
C++
#include <stdio.h>
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#include <stdint.h>
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struct RegisterContext
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{
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uintptr_t r0;
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uintptr_t r1;
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uintptr_t r2;
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uintptr_t r3;
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uintptr_t r4;
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uintptr_t pc;
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uintptr_t fp;
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uintptr_t sp;
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};
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struct ThreadInfo {
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uint32_t tid;
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const char *name;
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RegisterContext regs;
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ThreadInfo *next;
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};
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int main(int argc, char const *argv[]);
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ThreadInfo g_thread2 = { 0x2222, "thread2", { 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, (uintptr_t)&main, 0x2006, 0x2007 }, NULL };
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ThreadInfo g_thread1 = { 0x1111, "thread1", { 0x1000, 0x1001, 0x1002, 0x1003, 0x1004, (uintptr_t)&main, 0x1006, 0x1007 }, &g_thread2 };
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ThreadInfo *g_thread_list_ptr = &g_thread1;
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int main(int argc, char const *argv[]) {
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// clang-format off
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printf ("g_thread_list is %p\n", g_thread_list_ptr);
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return 0; //% v = self.dbg.GetSelectedTarget().FindFirstGlobalVariable('g_thread_list_ptr')
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//% self.assertTrue(v.AddressOf().IsValid())
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//% self.assertFalse(v.AddressOf().AddressOf().IsValid())
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//% v_gla = v.GetChildMemberWithName('regs').GetLoadAddress()
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//% v_aof = v.GetChildMemberWithName('regs').AddressOf().GetValueAsUnsigned(lldb.LLDB_INVALID_ADDRESS)
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//% expr = '(%s)0x%x' % (v.GetType().GetName(), v.GetValueAsUnsigned(0))
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//% e = v.CreateValueFromExpression('e', expr)
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//% e_gla = e.GetChildMemberWithName('regs').GetLoadAddress()
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//% e_aof = e.GetChildMemberWithName('regs').AddressOf().GetValueAsUnsigned(lldb.LLDB_INVALID_ADDRESS)
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//% self.assertTrue(v_gla == e_gla, "GetLoadAddress() differs")
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//% self.assertTrue(v_aof == e_aof, "AddressOf() differs")
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}
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