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fix incorrect commits in new pe/x64 unwinder; fix bad unwind termination conditions

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Ryan Fleury committed 2026-06-09 10:38:08 -07:00
1 parent 9955c8c1a7
commit ec4fd23e15
3 files changed
+18 -9
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src/pe/x64/unwind/pe_x64_unwind.c
+6 -6
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@@ -361,7 +361,7 @@ pe_x64_uwnd_step(Arch arch, MemoryMap *memory_map, UWND_ModuleInfo *module_info,
PE_UnwindGprRegX64 gpr_reg = (inst_byte - 0x58) + (rex & 1)*8;
X64_RegCode reg_code = pe_x64_uwnd_reg_code_from_pe_gpr_reg(gpr_reg);
Rng1U16 reg_rng = x64_reg_code_rng_table[reg_code];
U64 *reg_ptr = (U64 *)((U8 *)&regs + reg_rng.min);
U64 *reg_ptr = (U64 *)((U8 *)&new_regs + reg_rng.min);
reg_ptr[0] = value;
new_regs->rsp = sp + 8;
}
@@ -430,7 +430,7 @@ pe_x64_uwnd_step(Arch arch, MemoryMap *memory_map, UWND_ModuleInfo *module_info,
PE_UnwindGprRegX64 gpr_reg = (modrm & 7) + (rex & 1)*8;
X64_RegCode reg_code = pe_x64_uwnd_reg_code_from_pe_gpr_reg(gpr_reg);
Rng1U16 reg_rng = x64_reg_code_rng_table[reg_code];
U64 *reg_ptr = (U64 *)((U8 *)&regs + reg_rng.min);
U64 *reg_ptr = (U64 *)((U8 *)&new_regs + reg_rng.min);
U64 reg_value = reg_ptr[0];
// rjf: read immediate
@@ -608,7 +608,7 @@ pe_x64_uwnd_step(Arch arch, MemoryMap *memory_map, UWND_ModuleInfo *module_info,
if(frame_reg_code != X64_RegCode_nil)
{
Rng1U16 frame_reg_rng = x64_reg_code_rng_table[frame_reg_code];
U64 raw_frame_base = *(U64 *)((U8 *)regs + frame_reg_rng.min);
U64 raw_frame_base = *(U64 *)((U8 *)new_regs + frame_reg_rng.min);
U64 adjusted_frame_base = raw_frame_base - frame_off*16;
frame_base = adjusted_frame_base;
}
@@ -661,7 +661,7 @@ pe_x64_uwnd_step(Arch arch, MemoryMap *memory_map, UWND_ModuleInfo *module_info,
{
X64_RegCode reg_code = pe_x64_uwnd_reg_code_from_pe_gpr_reg(op_info);
Rng1U16 reg_rng = x64_reg_code_rng_table[reg_code];
*(U64 *)((U8 *)regs + reg_rng.min) = value;
*(U64 *)((U8 *)new_regs + reg_rng.min) = value;
new_regs->rsp = rsp + 8;
}
}break;
@@ -720,7 +720,7 @@ pe_x64_uwnd_step(Arch arch, MemoryMap *memory_map, UWND_ModuleInfo *module_info,
{
X64_RegCode reg_code = pe_x64_uwnd_reg_code_from_pe_gpr_reg(op_info);
Rng1U16 reg_rng = x64_reg_code_rng_table[reg_code];
*(U64 *)((U8 *)regs + reg_rng.min) = value;
*(U64 *)((U8 *)new_regs + reg_rng.min) = value;
}
}break;
@@ -742,7 +742,7 @@ pe_x64_uwnd_step(Arch arch, MemoryMap *memory_map, UWND_ModuleInfo *module_info,
{
X64_RegCode reg_code = pe_x64_uwnd_reg_code_from_pe_gpr_reg(op_info);
Rng1U16 reg_rng = x64_reg_code_rng_table[reg_code];
*(U64 *)((U8 *)regs + reg_rng.min) = value;
*(U64 *)((U8 *)new_regs + reg_rng.min) = value;
}
}break;