Mercurial > repos > blastem

comparison zruntime.S @ 390:561fe3ea3fc8

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Use a call instruction to figure out the original native address when retranslating so that it does not get lost when the byte transforms from a instruction word to extension word
author Mike Pavone <pavone@retrodev.com>
date Sat, 08 Jun 2013 11:31:52 -0700
parents 134ffb72d7a1
children 30c250a41629
comparison
equal deleted inserted replaced
389:3815ad1e684e 390:561fe3ea3fc8
245 /* genesis Z80 has no IO port hardware and writes have no effect */ 245 /* genesis Z80 has no IO port hardware and writes have no effect */
246 ret 246 ret
247 247
248 .global z80_retrans_stub 248 .global z80_retrans_stub
249 z80_retrans_stub: 249 z80_retrans_stub:
250 call z80_save_context 250 pop %r14
251 call z80_save_context
252 /* adjust for mov and call instructions */
253 sub $10, %r14
251 mov %r13d, %edi 254 mov %r13d, %edi
255 mov %r14, %rdx
252 push %rsi 256 push %rsi
253 call z80_retranslate_inst 257 call z80_retranslate_inst
254 pop %rsi 258 pop %rsi
255 mov %rax, %r13 259 mov %rax, %r13
256 call z80_load_context 260 call z80_load_context