Mercurial > repos > blastem

diff backend_x86.c @ 567:8e395210f50f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Refactor gen_x86 to use an interface more like gen_arm and to remove the need for the caller to decide whether an 8-bit or 32-bit displacement is needed in the rdisp functions. Update m68k_to_x86 to use the new version of the gen_x86 functions and do some minor refactoring there in the process
author Michael Pavone <pavone@retrodev.com>
date Sun, 02 Mar 2014 14:45:36 -0800
parents
children 2dde38c1744f
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/backend_x86.c	Sun Mar 02 14:45:36 2014 -0800
@@ -0,0 +1,29 @@
+#include "backend.h"
+#include "gen_x86.h"
+
+void cycles(cpu_options *opts, uint32_t num)
+{
+	add_ir(&opts->code, num, opts->cycles, SZ_D);
+}
+
+void check_cycles_int(cpu_options *opts, uint32_t address)
+{
+	code_info *code = &opts->code;
+	cmp_rr(code, opts->cycles, opts->limit, SZ_D);
+	code_ptr jmp_off = code->cur+1;
+	jcc(code, CC_NC, jmp_off+1);
+	mov_ir(code, address, opts->scratch1, SZ_D);
+	call(code, opts->handle_cycle_limit_int);
+	*jmp_off = code->cur - (jmp_off+1);
+}
+
+void check_cycles(cpu_options * opts)
+{
+	code_info *code = &opts->code;
+	cmp_rr(code, opts->cycles, opts->limit, SZ_D);
+	check_alloc_code(code, MAX_INST_LEN*2);
+	code_ptr jmp_off = code->cur+1;
+	jcc(code, CC_NC, jmp_off+1);
+	call(code, opts->handle_cycle_limit);
+	*jmp_off = code->cur - (jmp_off+1);
+}