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WIP DW_OP_piece

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This commit is contained in:
Nikita Smith
2025-12-17 17:32:03 -08:00
parent 43cb8b7b1a
commit ce4d09d431
4 changed files with 128 additions and 34 deletions
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src/torture/torture.c
+35
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@@ -5163,6 +5163,40 @@ t_plus_uconst(void)
return result;
}
internal T_Result
t_reg_split_spill(void)
{
Temp scratch = scratch_begin(0, 0);
T_Result result = T_Result_Fail;
// setup register context
REGS_RegBlockX64 regs = {0};
{
REGS_RegCode reg_code = reg_code_from_dw_reg(Arch_x64, DW_ExprOp_BReg3 - DW_ExprOp_BReg0);
Rng1U64 reg_range = regs_range_from_code(Arch_x64, 0, reg_code);
U64 value = 0xaaaa;
MemoryCopy((U8 *)&regs + reg_range.min, &value, sizeof(value));
}
{
REGS_RegCode reg_code = reg_code_from_dw_reg(Arch_x64, DW_ExprOp_BReg10 - DW_ExprOp_BReg0);
Rng1U64 reg_range = regs_range_from_code(Arch_x64, 0, reg_code);
U64 value = 0xbbbb;
MemoryCopy((U8 *)&regs + reg_range.min, &value, sizeof(value));
}
DW_ExprEnc expr_encs[] = { DW_ExprEnc_Op(Reg3), DW_ExprEnc_Op(Piece), DW_ExprEnc_ULEB128(4), DW_ExprEnc_Op(Reg10), DW_ExprEnc_Op(Piece), DW_ExprEnc_ULEB128(2) };
String8 expr_data = dw_encode_expr(scratch.arena, Arch_x64, DW_Format_64Bit, expr_encs, ArrayCount(expr_encs));
DW_Expr expr = dw_expr_from_data(scratch.arena, DW_Format_64Bit, byte_size_from_arch(Arch_x64), expr_data);
DW_ExprValue expr_value;
DW_ExprEvalResult expr_eval = dw_eval_expr(scratch.arena, Arch_x64, DW_Format_64Bit, 0, 0, 0, max_U64, expr, regs_read_dwarf_x64, &regs, 0, 0, &expr_value);
result = T_Result_Pass;
exit:;
scratch_end(scratch);
return result;
}
////////////////////////////////////////////////////////////////
internal void
@@ -5251,6 +5285,7 @@ entry_point(CmdLine *cmdline)
T(frame_relative_variable),
T(call_by_reference),
T(plus_uconst),
//T(reg_split_spill),
#undef T
};