ed/raddebugger
1
0
Fork 0
mirror of https://github.com/Ed94/raddebugger.git synced 2026-10-08 00:45:41 +00:00
Code Issues Packages Projects Releases Wiki Activity

generalize machine ops

Browse Source
This commit is contained in:
Nikita Smith
2025-12-16 10:40:48 -08:00
parent 782f87e512
commit 952afd49a7
7 changed files with 89 additions and 119 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/dwarf/dwarf_unwind.c
+16 -16
View File
@@ -236,14 +236,14 @@ dw_cfi_row_from_pc(Arena *arena, Arch arch, DW_CIE *cie, DW_FDE *fde, DW_DecodeP
return result;
}
internal DW_UnwindStatus
internal MachineOpResult
dw_compute_cfa(Arch arch,
DW_CFI_Row *row,
DW_MemRead *mem_read_func, void *mem_read_ud,
DW_RegRead *reg_read_func, void *reg_read_ud,
MachineOp_MemRead *mem_read_func, void *mem_read_ud,
MachineOp_RegRead *reg_read_func, void *reg_read_ud,
U64 *cfa_out)
{
DW_UnwindStatus unwind_status = DW_UnwindStatus_Fail;
MachineOpResult unwind_status = MachineOpResult_Fail;
switch (row->cfa.rule) {
case DW_CFA_Rule_Null: break;
@@ -253,7 +253,7 @@ dw_compute_cfa(Arch arch,
U64 reg_size = dw_reg_size_from_code(arch, row->cfa.reg);
AssertAlways(reg_size <= sizeof(cfa_reg_value));
unwind_status = reg_read_func(row->cfa.reg, &cfa_reg_value, reg_size, reg_read_ud);
if (unwind_status != DW_UnwindStatus_Ok) { break; }
if (unwind_status != MachineOpResult_Ok) { break; }
*cfa_out = cfa_reg_value + row->cfa.off;
} break;
case DW_CFA_Rule_Expression: {
@@ -265,16 +265,16 @@ dw_compute_cfa(Arch arch,
return unwind_status;
}
internal DW_UnwindStatus
internal MachineOpResult
dw_cfi_apply_register_rules(Arch arch,
U64 cfa,
DW_CFI_Row *row,
DW_MemRead *mem_read_func, void *mem_read_ud,
DW_RegRead *reg_read_func, void *reg_read_ud,
DW_RegWrite *reg_write_func, void *reg_write_ud)
MachineOp_MemRead *mem_read_func, void *mem_read_ud,
MachineOp_RegRead *reg_read_func, void *reg_read_ud,
MachineOp_RegWrite *reg_write_func, void *reg_write_ud)
{
Temp scratch = scratch_begin(0,0);
DW_UnwindStatus unwind_status = DW_UnwindStatus_Ok;
MachineOpResult unwind_status = MachineOpResult_Ok;
U64 max_reg_size = dw_reg_max_size_from_arch(arch);
void *reg_buffer = push_array(scratch.arena, U8, max_reg_size);
@@ -289,12 +289,12 @@ dw_cfi_apply_register_rules(Arch arch,
// read register value from memory
U64 addr = cfa + reg->n;
U64 reg_size = dw_reg_size_from_code(arch, reg_idx);
unwind_status = mem_read_func(addr, reg_size, reg_buffer, mem_read_ud);
if (unwind_status != DW_UnwindStatus_Ok) { goto exit; }
unwind_status = mem_read_func(addr, reg_buffer, reg_size, mem_read_ud);
if (unwind_status != MachineOpResult_Ok) { goto exit; }
// write register value to the thread context
unwind_status = reg_write_func(reg_idx, reg_buffer, reg_size, reg_write_ud);
if (unwind_status != DW_UnwindStatus_Ok) { goto exit; }
if (unwind_status != MachineOpResult_Ok) { goto exit; }
} break;
case DW_CFI_RegisterRule_ValOffset: {
// compute register value
@@ -303,17 +303,17 @@ dw_cfi_apply_register_rules(Arch arch,
// write register value to the thread context
U64 reg_size = dw_reg_size_from_code(arch, reg_idx);
unwind_status = reg_write_func(reg_idx, &reg_value, reg_size, reg_write_ud);
if (unwind_status != DW_UnwindStatus_Ok) { goto exit; }
if (unwind_status != MachineOpResult_Ok) { goto exit; }
} break;
case DW_CFI_RegisterRule_Register: {
// read register value from another register
U64 reg_size = dw_reg_size_from_code(arch, reg_idx);
unwind_status = reg_read_func(reg->n, reg_buffer, reg_size, reg_read_ud);
if (unwind_status != DW_UnwindStatus_Ok) { goto exit; }
if (unwind_status != MachineOpResult_Ok) { goto exit; }
// write register value to the thread context
unwind_status = reg_write_func(reg_idx, reg_buffer, reg_size, reg_write_ud);
if (unwind_status != DW_UnwindStatus_Ok) { goto exit; }
if (unwind_status != MachineOpResult_Ok) { goto exit; }
} break;
case DW_CFI_RegisterRule_Expression: {
// TODO: evaluate expression
src/dwarf/dwarf_unwind.h
+1 -1
View File
@@ -74,7 +74,7 @@ internal DW_CFI_Unwind * dw_cfi_unwind_init(Arena *arena, Arch arch, DW_CIE *cie
internal B32 dw_cfi_next_row(Arena *arena, DW_CFI_Unwind *uw);
internal DW_CFI_Row * dw_cfi_row_from_pc(Arena *arena, Arch arch, struct DW_CIE *cie, struct DW_FDE *fde, DW_DecodePtr *decode_ptr_func, void *decode_ptr_ctx, U64 pc);
internal DW_UnwindStatus dw_cfi_apply_register_rules(Arch arch, U64 cfa, DW_CFI_Row *row, DW_MemRead *mem_read_func, void *mem_read_ud, DW_RegRead *reg_read_func, void *reg_read_ud, DW_RegWrite *reg_write_func, void *reg_write_ud);
internal MachineOpResult dw_cfi_apply_register_rules(Arch arch, U64 cfa, DW_CFI_Row *row, MachineOp_MemRead *mem_read_func, void *mem_read_ud, MachineOp_RegRead *reg_read_func, void *reg_read_ud, MachineOp_RegWrite *reg_write_func, void *reg_write_ud);
#endif // DWARF_UNWIND_H