Add assembly section 1 material.

Author: kohler

asms1/.gitignore

@@ -0,0 +1,2 @@
+fun[0-9][0-9]
+fun0[1-6].s

asms1/GNUmakefile

@@ -0,0 +1,32 @@
+PROGRAMS = $(sort $(patsubst fun%.cc,fun%,$(wildcard fun[0-9][0-9].cc)) $(patsubst fun%.s,fun%,$(wildcard fun[0-9][0-9].s)))
+ALLPROGRAMS = $(PROGRAMS)
+FULLSOURCES = $(patsubst fun%.cc,fun%.s,$(sort $(wildcard fun[0-9][0-9].cc)))
+
+all: $(PROGRAMS) $(FULLSOURCES)
+
+O = s
+include ../common/rules.mk
+LDFLAGS := $(if $(ISLINUX),-no-pie,)
+
+%.o: %.cc $(BUILDSTAMP)
+	$(CXX) $(CPPFLAGS) $(filter-out -g,$(CXXFLAGS)) $(O) $(DEPCFLAGS) -o $@ -c $<
+
+%.s: %.cc $(BUILDSTAMP)
+	$(CXX) $(CPPFLAGS) $(filter-out -g,$(CXXFLAGS)) $(O) $(DEPCFLAGS) -o $@ -S $<
+	$(call cleanasm,$@)
+
+fundriver.o: fundriver.cc $(BUILDSTAMP)
+	$(CXX) $(CPPFLAGS) $(CXXFLAGS) $(O) $(DEPCFLAGS) -o $@ -c $<
+
+%.o: %.s $(BUILDSTAMP)
+	$(call run,$(CXX) -o $@ -c,ASSEMBLE,$<)
+
+fun%: fun%.o fundriver.o
+	$(CXX) $(CXXFLAGS) $(O) -o $@ $^ $(LDFLAGS)
+
+
+clean:
+	rm -rf $(DEPSDIR)
+	rm -f $(ALLPROGRAMS) *.o $(FULLSOURCES)
+
+.PHONY: all clean

asms1/README.md

@@ -0,0 +1,79 @@
+set arch i386:x86-64
+
+init-if-undefined $fun_continue = 0
+init-if-undefined $fun_file = ""
+init-if-undefined $fun_file_set = 0
+init-if-undefined $fun_argc = 0
+init-if-undefined $fun_arg0 = ""
+init-if-undefined $fun_arg1 = ""
+init-if-undefined $fun_arg2 = ""
+init-if-undefined $fun_arg3 = ""
+
+define fun-file
+  if $argc != 1
+    expected_exactly_one_argument
+  else
+    file $arg0
+    set $fun_file = $arg0
+    set $fun_file_set = 1
+    p $fun_file
+  end
+end
+
+document fun-file
+  Set the fun-file to run.
+end
+
+alias -a ff = fun-file
+
+define run-fun
+  if $fun_file_set == 0
+    please_run_fun_file_first
+  else
+    if $argc > 0
+      set $fun_argc = $argc
+      set $fun_arg0 = $arg0
+    end
+    if $argc > 1
+      set $fun_arg1 = $arg1
+    end
+    if $argc > 2
+      set $fun_arg2 = $arg2
+    end
+    if $argc > 3
+      set $fun_arg3 = $arg3
+    end
+    if $argc > 4
+      too_many_arguments
+    end
+    if $_thread != 0
+      kill
+    end
+    shell killall qemu-x86_64 >/dev/null 2>&1
+    if $fun_argc == 0
+      eval "shell qemu-x86_64 -g 12948 \"%s\" & sleep 0.2", $fun_file
+    end
+    if $fun_argc == 1
+      eval "shell qemu-x86_64 -g 12948 \"%s\" \"%s\" & sleep 0.2", $fun_file, $fun_arg0
+    end
+    if $fun_argc == 2
+      eval "shell qemu-x86_64 -g 12948 \"%s\" \"%s\" \"%s\" & sleep 0.2", $fun_file, $fun_arg0, $fun_arg1
+    end
+    if $fun_argc == 3
+      eval "shell qemu-x86_64 -g 12948 \"%s\" \"%s\" \"%s\" \"%s\" & sleep 0.2", $fun_file, $fun_arg0, $fun_arg1, $fun_arg2
+    end
+    if $fun_argc == 4
+      eval "shell qemu-x86_64 -g 12948 \"%s\" \"%s\" \"%s\" \"%s\" \"%s\" & sleep 0.2", $fun_file, $fun_arg0, $fun_arg1, $fun_arg2, $fun_arg3
+    end
+    target remote localhost:12948
+    if $fun_continue != 0
+      continue
+    end
+  end
+end
+
+document run-fun
+  Restart the current fun-file.
+end
+
+alias -a rf = run-fun

asms1/fun.gdb

@@ -0,0 +1,9 @@
+#include <cstring>
+
+int fun(const char* s) {
+    if (strchr(s, '!') != nullptr) {
+        return 0; /* fun */
+    } else {
+        return -1; /* no fun */
+    }
+}

asms1/fun01.cc

@@ -0,0 +1,6 @@
+#include <cstring>
+#include <cstdlib>
+
+int fun(const char* s) {
+    return strtol(s, nullptr, 0) + 1;
+}

asms1/fun02.cc

@@ -0,0 +1,7 @@
+int fun(const char* s) {
+    if (s[0] != 0) {
+        return s[1];
+    } else {
+        return -1;
+    }
+}

asms1/fun03.cc

@@ -0,0 +1,9 @@
+int fun(const char* s) {
+    if (s[0] != 0
+        && s[0] == s[1]
+        && s[1] != 0) {
+        return s[2];
+    } else {
+        return -1;
+    }
+}

asms1/fun04.cc

@@ -0,0 +1,11 @@
+int fun(const char* s) {
+    if (s[0] == 0) {
+        return -1;
+    }
+    while (true) {
+        if (s[0] != s[1]) {
+            return s[1];
+        }
+        ++s;
+    }
+}

asms1/fun05.cc

@@ -0,0 +1,8 @@
+#include <cstring>
+
+int fun(const char* s) {
+    unsigned len;
+    for (len = 0; s[len]; ++len) {
+    }
+    return len % 4;
+}