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authorMITSUNARI Shigeo <[email protected]>2023-12-27 09:06:48 +0900
committerMITSUNARI Shigeo <[email protected]>2023-12-27 09:06:48 +0900
commit8c44467afb480d7d3639965bed79566cafa484ad (patch)
tree86ffe2ce50c21e50b4f56726fff857b9c034161f /sample
parent523cf1ed04bcf97794d8796fab8527e28b07e86f (diff)
downloadxbyak-8c44467afb480d7d3639965bed79566cafa484ad.tar.gz
xbyak-8c44467afb480d7d3639965bed79566cafa484ad.zip
add no_flags sample
Diffstat (limited to 'sample')
-rw-r--r--sample/Makefile6
-rw-r--r--sample/no_flags.cpp28
2 files changed, 33 insertions, 1 deletions
diff --git a/sample/Makefile b/sample/Makefile
index 2010f69..ff94b3a 100644
--- a/sample/Makefile
+++ b/sample/Makefile
@@ -30,7 +30,7 @@ else
endif
ifeq ($(BIT),64)
-TARGET += test64 bf64 memfunc64 test_util64 jmp_table64 zero_upper ccmp
+TARGET += test64 bf64 memfunc64 test_util64 jmp_table64 zero_upper ccmp no_flags
ifeq ($(BOOST_EXIST),1)
TARGET += calc64 #calc2_64
endif
@@ -111,6 +111,10 @@ ccmp: ccmp.cpp $(XBYAK_INC)
$(CXX) $(CFLAGS) ccmp.cpp -o $@
test_ccmp: ccmp
sde -future -- ./ccmp
+no_flags: no_flags.cpp $(XBYAK_INC)
+ $(CXX) $(CFLAGS) no_flags.cpp -o $@
+test_no_flags: no_flags
+ sde -future -- ./no_flags
clean:
rm -rf $(TARGET) profiler profiler-vtune
diff --git a/sample/no_flags.cpp b/sample/no_flags.cpp
new file mode 100644
index 0000000..8ab08df
--- /dev/null
+++ b/sample/no_flags.cpp
@@ -0,0 +1,28 @@
+#include <stdio.h>
+#include <xbyak/xbyak.h>
+
+struct Code : Xbyak::CodeGenerator {
+ Code(bool nf) {
+ if (nf) {
+ puts("no flags (with T_nf)");
+ } else {
+ puts("change flags (without T_nf)");
+ }
+ xor_(eax, eax); // CF = 0
+ mov(eax, -1);
+ if (nf) {
+ add(eax|T_nf, eax, 1); // does not change CF
+ } else {
+ add(eax, eax, 1); // CF = 1
+ }
+ adc(eax, 0); // eax = CF ? 1 : 0
+ ret();
+ }
+};
+
+int main() {
+ for (int i = 0; i < 2; i++) {
+ Code c(i);
+ printf("i=%d ret=%d\n", i, c.getCode<int(*)()>()());
+ }
+}