150 lines
4.2 KiB
C++
150 lines
4.2 KiB
C++
#include <stdafx.h>
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#include "ScriptAPI.h"
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#pragma warning(disable: 4702) // disable unreachable code warning
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static void GetRange(duk_context* ctx, duk_idx_t idx, uint32_t* start, uint32_t* end);
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void ScriptAPI::Define_AddressRange(duk_context* ctx)
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{
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const DukPropListEntry prototype[] = {
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{ "size", DukCFunction(js_AddressRange_size) },
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{ "includes", DukCFunction(js_AddressRange_includes) },
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{ "offset", DukCFunction(js_AddressRange_offset) },
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{ "address", DukCFunction(js_AddressRange_address) },
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{ nullptr }
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};
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DefineGlobalClass(ctx, "AddressRange", js_AddressRange__constructor, prototype);
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struct { const char* key; uint32_t start, end; } ranges[] = {
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{ "ADDR_ANY", 0x00000000, 0xFFFFFFFF },
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{ "ADDR_ANY_KUSEG", 0x00000000, 0x7FFFFFFF },
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{ "ADDR_ANY_KSEG0", 0x80000000, 0x9FFFFFFF },
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{ "ADDR_ANY_KSEG1", 0xA0000000, 0xBFFFFFFF },
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{ "ADDR_ANY_KSEG2", 0xC0000000, 0xFFFFFFFF },
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{ "ADDR_ANY_RDRAM", 0x80000000, 0x807FFFFF },
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{ "ADDR_ANY_RDRAM_UNC", 0xA0000000, 0xA07FFFFF },
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{ "ADDR_ANY_CART_ROM", 0x90000000, 0x95FFFFFF },
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{ "ADDR_ANY_CART_ROM_UNC", 0xB0000000, 0xB5FFFFFF },
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{ nullptr, 0, 0 }
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};
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duk_push_global_object(ctx);
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for(int i = 0; ranges[i].key != nullptr; i++)
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{
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duk_push_string(ctx, ranges[i].key);
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duk_get_global_string(ctx, "AddressRange");
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duk_push_uint(ctx, ranges[i].start);
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duk_push_uint(ctx, ranges[i].end);
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duk_new(ctx, 2);
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duk_def_prop(ctx, -3, DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_SET_ENUMERABLE);
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}
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duk_pop(ctx);
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}
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duk_ret_t ScriptAPI::js_AddressRange__constructor(duk_context* ctx)
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{
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CheckArgs(ctx, { Arg_Number, Arg_Number });
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duk_to_uint32(ctx, 0);
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duk_to_uint32(ctx, 1);
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duk_uint_t start = duk_get_uint(ctx, 0);
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duk_uint_t end = duk_get_uint(ctx, 1);
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if (end < start)
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{
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duk_push_error_object(ctx, DUK_ERR_RANGE_ERROR, "invalid range; end cannot be less than start");
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return duk_throw(ctx);
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}
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duk_push_this(ctx);
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duk_push_uint(ctx, start);
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duk_put_prop_string(ctx, -2, "start");
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duk_push_uint(ctx, end);
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duk_put_prop_string(ctx, -2, "end");
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duk_freeze(ctx, -1);
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duk_pop(ctx);
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return 0;
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}
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duk_ret_t ScriptAPI::js_AddressRange_size(duk_context* ctx)
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{
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CheckArgs(ctx, {});
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duk_uint_t start, end;
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duk_push_this(ctx);
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GetRange(ctx, -1, &start, &end);
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duk_push_uint(ctx, end - start + 1);
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return 1;
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}
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duk_ret_t ScriptAPI::js_AddressRange_includes(duk_context* ctx)
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{
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CheckArgs(ctx, { Arg_Number });
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duk_to_uint32(ctx, 0);
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duk_uint_t address = duk_get_uint(ctx, 0);
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duk_uint_t start, end;
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duk_push_this(ctx);
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GetRange(ctx, -1, &start, &end);
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duk_push_boolean(ctx, static_cast<duk_bool_t>(address >= start && address <= end));
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return 1;
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}
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duk_ret_t ScriptAPI::js_AddressRange_offset(duk_context* ctx)
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{
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CheckArgs(ctx, { Arg_Number });
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duk_to_uint32(ctx, 0);
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duk_uint_t address = duk_get_uint(ctx, 0);
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duk_uint_t start, end;
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duk_push_this(ctx);
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GetRange(ctx, -1, &start, &end);
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if (address < start || address > end) {
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duk_push_error_object(ctx, DUK_ERR_RANGE_ERROR, "address out of bounds");
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return duk_throw(ctx);
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}
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duk_push_uint(ctx, address - start);
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return 1;
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}
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duk_ret_t ScriptAPI::js_AddressRange_address(duk_context* ctx)
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{
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CheckArgs(ctx, { Arg_Number });
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duk_int_t offset = duk_get_int(ctx, 0);
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duk_uint_t start, end;
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duk_push_this(ctx);
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GetRange(ctx, -1, &start, &end);
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duk_uint_t address = start + offset;
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if (address < start || address > end) {
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duk_push_error_object(ctx, DUK_ERR_RANGE_ERROR, "offset out of bounds");
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return duk_throw(ctx);
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}
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duk_push_uint(ctx, address);
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return 1;
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}
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static void GetRange(duk_context* ctx, duk_idx_t idx, uint32_t* start, uint32_t* end)
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{
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idx = duk_normalize_index(ctx, idx);
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duk_get_prop_string(ctx, idx, "start");
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*start = duk_get_uint(ctx, -1);
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duk_get_prop_string(ctx, idx, "end");
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*end = duk_get_uint(ctx, -1);
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duk_pop_n(ctx, 2);
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}
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