debuggerx/eden
1
0
Fork 0
mirror of https://git.eden-emu.dev/eden-emu/eden.git synced 2026-09-14 23:43:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

[dynarmic] fix sign extension logic on x64

Browse Source
This commit is contained in:
Exverge
2026-09-13 12:10:03 -04:00
committed by lizzie
parent 2b4184dd2b
commit 20dfdc1e64
1 changed files with 10 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.h
+10 -4
View File
@@ -85,8 +85,13 @@ template<>
code.mov(tmp, vaddr);
code.shr(tmp, int(page_table_const_bits));
code.shl(tmp, int(ctx.conf.page_table_log2_stride));
code.mov(page, qword[r14 + tmp.cvt64()]);
if (ctx.conf.page_table_log2_stride > 3) {
code.shl(tmp, int(ctx.conf.page_table_log2_stride));
code.mov(page, qword[r14 + tmp.cvt64()]);
} else {
code.mov(page, qword[r14 + tmp.cvt64() * int(ctx.conf.page_table_log2_stride)]);
}
// check for marked bit, use as unmapped if marked
if (ctx.conf.page_table_marked_bit) {
@@ -102,9 +107,10 @@ template<>
code.mov(tmp, ctx.conf.page_table_pointer_mask);
code.and_(page, tmp);
}
// check for sign bit, apply sign extension as needed
if (ctx.conf.page_table_sign_extension) {
code.shl(page, *ctx.conf.page_table_sign_extension);
code.sar(page, *ctx.conf.page_table_sign_extension);
code.shl(page, 63 - int(*ctx.conf.page_table_sign_extension));
code.sar(page, 63 - int(*ctx.conf.page_table_sign_extension));
}
code.jz(abort, code.T_NEAR);