Ghidra Decompiler Error: Could not finish collapsing block structure #203
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It's related to relocs patching. It currently "works" with |
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Indeed, I retried with the latest Rizin/Rz-Ghidra: And then it prints a lot of endless garbage like that: // WARNING: Control flow encountered bad instruction data
undefined [16] sym.owWrite(int64_t arg1, int64_t arg2, int64_t arg3, int64_t arg4, int64_t arg5, int64_t arg6)
{
char cVar1;
code *pcVar2;
int32_t iVar3;
pcVar2 = reloc..text.231 + *(int32_t *)(reloc..text.231 + (uint64_t)(uint8_t)((*(uint8_t *)arg3 & 0x7f) - 4) * 4);
iVar3 = (int32_t)arg1;
cVar1 = (char)pcVar2;
// switch table (116 cases) at 0x8001dd4
switch(*(uint8_t *)arg3 & 0x7f) {
case 4:
case 6:
case 8:
case 10:
case 0xc:
case 0x18:
case 0x1a:
case 0x1d:
case 0x21:
case 0x23:
if (0 < iVar3) goto code_r0x08023298;
if (iVar3 != 0) goto code_r0x08000268;
goto code_r0x080232a0;
default:
code_r0x08000268:
return ZEXT816((uint64_t)arg4) << 0x40 & (undefined [16])0xffffffffffffffff;
case 9:
case 0xb:
case 0xf:
case 0x12:
case 0x13:
break;
case 0x14:
if (0 < iVar3) goto code_r0x080232b0;
if (iVar3 != 0) goto code_r0x08000268;
goto code_r0x08023288;
case 0x33:
*pcVar2 = (code)((char)*pcVar2 + cVar1);
*pcVar2 = (code)((char)*pcVar2 + cVar1);
*pcVar2 = (code)((char)*pcVar2 + cVar1);
*pcVar2 = (code)((char)*pcVar2 + cVar1);
break;
case 0x37:
case 0x77:
if (iVar3 < 1) {
if (iVar3 != 0) goto code_r0x08000268;
goto code_r0x08023290;
}
goto code_r0x080232a8;
}
*pcVar2 = (code)((char)*pcVar2 + cVar1);
*pcVar2 = (code)((char)*pcVar2 + cVar1);
*pcVar2 = (code)((char)*pcVar2 + cVar1);
*pcVar2 = (code)((char)*pcVar2 + cVar1);
code_r0x08023288:
*pcVar2 = (code)((char)*pcVar2 + cVar1);
*pcVar2 = (code)((char)*pcVar2 + cVar1);
*pcVar2 = (code)((char)*pcVar2 + cVar1);
*pcVar2 = (code)((char)*pcVar2 + cVar1);
.... (thousands of lines like that)
*pcVar2 = (code)((char)*pcVar2 + cVar1);
*pcVar2 = (code)((char)*pcVar2 + cVar1);
*pcVar2 = (code)((char)*pcVar2 + cVar1);
*pcVar2 = (code)((char)*pcVar2 + cVar1);
// WARNING: Bad instruction - Truncating control flow here
halt_baddata();Attaching the full output here: |
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Despite all fixes in relocations it is still happening. |
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Since the binary is the unlinked object file, be sure to use rizinorg/rizin#799 for the Rizin
And it stuck for a loooooooong time, after that returning the following error message:
rawmem.c-gcc-x64-O3.o.zip
Ghidra 10.0 output:
Ghidra 10.0 disassembly:
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