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loader.wasm binary now includes compressed base

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This commit is contained in:
Dennis Ranke
2021-11-21 13:36:09 +01:00
parent 93b2bb60bd
commit 40d684ea9a
4 changed files with 79 additions and 21 deletions
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34
platform/loader.cwa
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@@ -1,16 +1,24 @@
import "env.memory" memory(9);
export fn load_uw8(module_start: i32, module_end: i32, base_start: i32, base_end: i32) -> i32 {
if ?module_start == 0 {
let lazy length = module_end - module_start;
copy(base_end, module_start, length);
return base_end + length;
global mut base_end: i32 = 0;
export fn load_uw8(module_size: i32) -> i32 {
let lazy version = ?0 - 1;
if version < 0 {
return module_size;
}
copy(base_end, base_start, 8);
base_start = base_start + 8;
let dest = base_end + 8;
let src = module_start + 1;
let module_end = 0x40000 + module_size;
if version & 1 {
module_end = uncompress(1, 0x40001);
} else {
copy(0x40000, 0, module_size);
}
copy(0, 0x84000, 8);
let base_start = 0x84008;
let dest = 8;
let src = 0x40001;
loop sections {
if src < module_end & (base_start >= base_end | ?src <= ?base_start) {
@@ -171,4 +179,12 @@ fn upkr_append_byte() {
upkr_src_ptr = upkr_src_ptr + 1;
upkr_low = (upkr_low & i64.extend_i32_u(-1)) << 8i64;
upkr_range = upkr_range << 8i64;
}
start fn unpack_base() {
base_end = uncompress(0, 0x84000);
}
data 0 {
file("../uw8-tool/base.upk")
}