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switch eval memory reads -> more generalized space reads; apply to register reads as well

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This commit is contained in:
Ryan Fleury
2024-08-15 11:55:22 -07:00
parent 59c01a73af
commit b98a75e056
10 changed files with 80 additions and 37 deletions
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src/eval/eval_interpret.c
+29 -5
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@@ -16,6 +16,34 @@ e_select_interpret_ctx(E_InterpretCtx *ctx)
e_interpret_ctx = ctx;
}
////////////////////////////////
//~ rjf: Space Reading Helpers
internal B32
e_space_read(E_Space space, void *out, Rng1U64 range)
{
B32 result = 0;
switch(space)
{
case E_Space_FIXED_COUNT:
case E_Space_Null:{}break;
case E_Space_Regs:
{
Rng1U64 legal_range = r1u64(0, e_interpret_ctx->reg_size);
Rng1U64 read_range = intersect_1u64(legal_range, range);
U64 read_size = dim_1u64(read_range);
MemoryCopy(out, (U8 *)e_interpret_ctx->reg_data + read_range.min, read_size);
result = (read_size == dim_1u64(range));
}break;
default:
if(e_interpret_ctx->space_read != 0)
{
result = e_interpret_ctx->space_read(e_interpret_ctx->space_read_user_data, space, out, range);
}break;
}
return result;
}
////////////////////////////////
//~ rjf: Interpretation Functions
@@ -126,11 +154,7 @@ e_interpret(String8 bytecode)
{
U64 addr = svals[0].u64;
U64 size = imm;
B32 good_read = 0;
if(e_interpret_ctx->memory_read != 0 && e_interpret_ctx->memory_read(e_interpret_ctx->memory_read_user_data, selected_space, &nval, r1u64(addr, addr+size)))
{
good_read = 1;
}
B32 good_read = e_space_read(selected_space, &nval, r1u64(addr, addr+size));
if(!good_read)
{
result.code = E_InterpretationCode_BadMemRead;