Mercurial > repos > blastem

diff zruntime.S @ 252:63b9a500a00b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
author Mike Pavone <pavone@retrodev.com>
date Mon, 29 Apr 2013 21:46:48 -0700
parents d94e6cd5a8a5
children 3b34deba4ca0
line wrap: on
line diff
--- a/zruntime.S	Mon Apr 29 01:14:24 2013 -0700
+++ b/zruntime.S	Mon Apr 29 21:46:48 2013 -0700
@@ -99,6 +99,15 @@
 z80_write_ram:
 	and $0x1FFF, %r13
 	mov %r14b, (%r11, %r13)
+	mov %r13d, %r14d
+	shr $7, %r14d
+	bt %r14d, 152(%rsi)
+	jnc not_code
+	call z80_save_context
+	mov %r13d, %edi
+	call z80_handle_code_write
+	mov %rax, %rsi
+not_code:
 	ret
 z80_write_bank:
 	and $0x7FFF, %r13
@@ -167,6 +176,17 @@
 	call z_inccycles
 	call z80_write_byte_noinc
 	ret
+	
+	.global z80_retrans_stub
+z80_retrans_stub:
+	call z80_save_context
+	mov %r13d, %edi
+	push %rsi
+	call z80_retranslate_inst
+	pop %rsi
+	mov %rax, %r13
+	call z80_load_context
+	jmp *%r13
 
 	.global z80_native_addr
 z80_native_addr: