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kohlerkohler
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Add assembly section 1 material.
1 parent 6f19f70 commit b68fc53

20 files changed

+902
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lines changed

‎asms1/.gitignore

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fun[0-9][0-9]
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fun0[1-6].s

‎asms1/GNUmakefile

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

‎asms1/README.md

+389
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‎asms1/fun.gdb

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

‎asms1/fun01.cc

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

‎asms1/fun02.cc

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

‎asms1/fun03.cc

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

‎asms1/fun04.cc

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

‎asms1/fun05.cc

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

‎asms1/fun06.cc

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

‎asms1/fun07.s

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.file "fun07.cc"
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.text
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.globl _Z3funPKc
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.type _Z3funPKc, @function
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_Z3funPKc:
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endbr64
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pushq %rcx
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xorl %edx, %edx
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xorl %esi, %esi
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call strtol@PLT
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movl $2, %edx
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movl %eax, %esi
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.L2:
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cmpl %esi, %edx
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jge .L5
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movl %edx, %ecx
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imull %edx, %ecx
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.L6:
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cmpl %esi, %ecx
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jge .L10
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addl %edx, %ecx
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jmp .L6
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.L10:
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je .L7
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incl %edx
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jmp .L2
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.L5:
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decl %eax
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setle %al
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movzbl %al, %eax
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jmp .L1
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.L7:
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movl $1, %eax
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.L1:
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popq %rdx
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ret
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.size _Z3funPKc, .-_Z3funPKc
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.ident "GCC: (Ubuntu 11.2.0-17ubuntu1) 11.2.0"
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.section .note.GNU-stack,"",@progbits

‎asms1/fun08.s

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.file "fun08.cc"
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.text
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.section .rodata.str1.1,"aMS",@progbits,1
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.LC0:
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.string "%d %d %d"
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.text
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.globl _Z3funPKc
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.type _Z3funPKc, @function
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_Z3funPKc:
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endbr64
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subq $40, %rsp
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leaq .LC0(%rip), %rsi
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movq %fs:40, %rax
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movq %rax, 24(%rsp)
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xorl %eax, %eax
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leaq 20(%rsp), %r8
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leaq 16(%rsp), %rcx
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leaq 12(%rsp), %rdx
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call __isoc99_sscanf@PLT
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movl %eax, %r8d
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orl $-1, %eax
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cmpl $3, %r8d
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jne .L1
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movl 16(%rsp), %eax
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addl 12(%rsp), %eax
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subl 20(%rsp), %eax
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.L1:
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movq 24(%rsp), %rdx
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subq %fs:40, %rdx
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je .L3
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call __stack_chk_fail@PLT
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.L3:
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addq $40, %rsp
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ret
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.size _Z3funPKc, .-_Z3funPKc
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.ident "GCC: (Ubuntu 11.2.0-17ubuntu1) 11.2.0"
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.section .note.GNU-stack,"",@progbits

‎asms1/fun09.s

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.file "fun09.cc"
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.text
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.section .rodata.str1.1,"aMS",@progbits,1
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.LC0:
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.string "r"
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.text
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.globl _Z3funPKc
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.type _Z3funPKc, @function
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_Z3funPKc:
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endbr64
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pushq %rcx
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leaq .LC0(%rip), %rsi
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call fopen@PLT
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movq %rax, %rdi
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orl $-1, %eax
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testq %rdi, %rdi
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je .L1
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call fclose@PLT
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xorl %eax, %eax
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.L1:
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popq %rdx
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ret
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.size _Z3funPKc, .-_Z3funPKc
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.ident "GCC: (Ubuntu 11.2.0-17ubuntu1) 11.2.0"
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.section .note.GNU-stack,"",@progbits

‎asms1/fun10.s

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.file "fun10.cc"
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.text
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.globl _Z3funPKc
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.type _Z3funPKc, @function
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_Z3funPKc:
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endbr64
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pushq %rcx
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xorl %edx, %edx
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xorl %esi, %esi
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call strtol@PLT
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movb $1, %dl
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movl %eax, %ecx
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shrl $8, %ecx
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je .L2
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leal -1(%rax), %edx
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testl %eax, %edx
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setne %dl
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.L2:
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movzbl %dl, %eax
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popq %rdx
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ret
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.size _Z3funPKc, .-_Z3funPKc
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.ident "GCC: (Ubuntu 11.2.0-17ubuntu1) 11.2.0"
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.section .note.GNU-stack,"",@progbits

‎asms1/fun11.s

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.file "fun11.cc"
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.text
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.globl _Z3funPKc
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.type _Z3funPKc, @function
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_Z3funPKc:
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endbr64
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xorl %eax, %eax
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.L2:
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movb (%rdi,%rax), %dl
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movl %eax, %ecx
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incq %rax
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leal -65(%rdx), %esi
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cmpb $25, %sil
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jbe .L2
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cmpl $5, %ecx
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setle %al
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testb %dl, %dl
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setne %dl
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orl %edx, %eax
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movzbl %al, %eax
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ret
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.size _Z3funPKc, .-_Z3funPKc
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.ident "GCC: (Ubuntu 11.2.0-17ubuntu1) 11.2.0"
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.section .note.GNU-stack,"",@progbits

‎asms1/fun12.s

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.file "fun12.cc"
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.text
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.globl _Z3funPKc
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.type _Z3funPKc, @function
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_Z3funPKc:
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endbr64
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pushq %rbx
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movq %rdi, %rbx
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call strlen@PLT
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xorl %edx, %edx
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movq %rax, %rcx
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cltq
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addq %rbx, %rax
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.L3:
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movb (%rbx,%rdx), %sil
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movl %edx, %edi
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testb %sil, %sil
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je .L4
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leaq 1(%rdx), %r8
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notq %rdx
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cmpb (%rax,%rdx), %sil
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jne .L4
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movq %r8, %rdx
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jmp .L3
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.L4:
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cmpl $4, %ecx
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popq %rbx
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setle %al
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cmpl %ecx, %edi
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setne %dl
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orl %edx, %eax
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movzbl %al, %eax
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ret
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.size _Z3funPKc, .-_Z3funPKc
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.ident "GCC: (Ubuntu 11.2.0-17ubuntu1) 11.2.0"
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.section .note.GNU-stack,"",@progbits

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