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Diffstat (limited to 'src/main.go')
-rw-r--r--src/main.go179
1 files changed, 96 insertions, 83 deletions
diff --git a/src/main.go b/src/main.go
index 724a5b3..a427a6b 100644
--- a/src/main.go
+++ b/src/main.go
@@ -252,6 +252,92 @@ done:
func mapX86_64linux(op Operation) string{
buf := ""
switch op.name {
+ case "boilerPlateStart":
+ buf += "section .text\n"
+ buf += "global _start\n"
+ buf += "_start:\n"
+
+ case "boilerPlateExit":
+ buf += "mov rdi, 0\n"
+ buf += "mov rax, 60\n"
+ buf += "syscall\n"
+
+ case "dumpFunc":
+ buf += ".dump:\n"
+ buf += "\tpush rbp\n"
+ buf += "\tmov rbp, rsp\n"
+ buf += "\tsub rsp, 48\n"
+ buf += "\tmov DWORD [rbp-36], edi\n"
+ buf += "\tmov QWORD [rbp-32], 0\n"
+ buf += "\tmov QWORD [rbp-24], 0\n"
+ buf += "\tmov DWORD [rbp-16], 0\n"
+ buf += "\tmov BYTE [rbp-13], 10\n"
+ buf += "\tmov DWORD [rbp-4], 18\n"
+ buf += "\tmov DWORD [rbp-8], 0\n"
+ buf += "\tcmp DWORD [rbp-36], 0\n"
+ buf += "\tjns .L3\n"
+ buf += "\tneg DWORD [rbp-36]\n"
+ buf += "\tmov DWORD [rbp-8], 1\n"
+ buf += ".L3:\n"
+ buf += "\tmov edx, DWORD [rbp-36]\n"
+ buf += "\tmovsx rax, edx\n"
+ buf += "\timul rax, rax, 1717986919\n"
+ buf += "\tshr rax, 32\n"
+ buf += "\tmov ecx, eax\n"
+ buf += "\tsar ecx, 2\n"
+ buf += "\tmov eax, edx\n"
+ buf += "\tsar eax, 31\n"
+ buf += "\tsub ecx, eax\n"
+ buf += "\tmov eax, ecx\n"
+ buf += "\tsal eax, 2\n"
+ buf += "\tadd eax, ecx\n"
+ buf += "\tadd eax, eax\n"
+ buf += "\tsub edx, eax\n"
+ buf += "\tmov DWORD [rbp-12], edx\n"
+ buf += "\tmov eax, DWORD [rbp-12]\n"
+ buf += "\tadd eax, 48\n"
+ buf += "\tmov edx, eax\n"
+ buf += "\tmov eax, DWORD [rbp-4]\n"
+ buf += "\tcdqe\n"
+ buf += "\tmov BYTE [rbp-32+rax], dl\n"
+ buf += "\tmov eax, DWORD [rbp-12]\n"
+ buf += "\tsub DWORD [rbp-36], eax\n"
+ buf += "\tmov eax, DWORD [rbp-36]\n"
+ buf += "\tmovsx rdx, eax\n"
+ buf += "\timul rdx, rdx, 1717986919\n"
+ buf += "\tshr rdx, 32\n"
+ buf += "\tmov ecx, edx\n"
+ buf += "\tsar ecx, 2\n"
+ buf += "\tcdq\n"
+ buf += "\tmov eax, ecx\n"
+ buf += "\tsub eax, edx\n"
+ buf += "\tmov DWORD [rbp-36], eax\n"
+ buf += "\tsub DWORD [rbp-4], 1\n"
+ buf += "\tcmp DWORD [rbp-36], 0\n"
+ buf += "\tjne .L3\n"
+ buf += "\tcmp DWORD [rbp-8], 0\n"
+ buf += "\tje .L4\n"
+ buf += "\tmov eax, DWORD [rbp-4]\n"
+ buf += "\tcdqe\n"
+ buf += "\tmov BYTE [rbp-32+rax], 45\n"
+ buf += "\tsub DWORD [rbp-4], 1\n"
+ buf += ".L4:\n"
+ buf += "\tmov eax, 20\n"
+ buf += "\tsub eax, DWORD [rbp-4]\n"
+ buf += "\tcdqe\n"
+ buf += "\tmov edx, DWORD [rbp-4]\n"
+ buf += "\tmovsx rdx, edx\n"
+ buf += "\tlea rcx, [rbp-32]\n"
+ buf += "\tadd rcx, rdx\n"
+ buf += "\tmov rdx, rax\n"
+ buf += "\tmov rsi, rcx\n"
+ buf += "\tmov edi, 1\n"
+ buf += "\tmov rax, 1\n"
+ buf += "\tsyscall\n"
+ buf += "\tnop\n"
+ buf += "\tleave\n"
+ buf += "\tret\n"
+
case "plus":
buf += "\tpop rsi\n"
buf += "\tpop rax\n"
@@ -401,97 +487,24 @@ func mapX86_64linux(op Operation) string{
func compile(ops[] Operation) {
comment_str := ";;"
var strings[][2] string
- print("section .text")
- print("global _start")
- print("_start:")
+ printDumpFunc := false
+ fmt.Printf(mapX86_64linux(Operation{name: "boilerPlateStart"}))
for i := 0; i < len(ops); i++ {
fmt.Printf("\t%s %s\n", comment_str, ops[i].name)
fmt.Printf(mapX86_64linux(ops[i]))
- if (ops[i].name == "string") {
+ switch ops[i].name {
+ case "string":
strings = append(strings, [2]string{ops[i].strData, ops[i].label})
+ case "dump":
+ printDumpFunc = true
}
}
- print(" ;; EXIT")
- print(" mov rdi, 0")
- print(" mov rax, 60")
- print(" syscall")
-
- print(".dump:");
- print(" push rbp")
- print(" mov rbp, rsp")
- print(" sub rsp, 48")
- print(" mov DWORD [rbp-36], edi")
- print(" mov QWORD [rbp-32], 0")
- print(" mov QWORD [rbp-24], 0")
- print(" mov DWORD [rbp-16], 0")
- print(" mov BYTE [rbp-13], 10")
- print(" mov DWORD [rbp-4], 18")
- print(" mov DWORD [rbp-8], 0")
- print(" cmp DWORD [rbp-36], 0")
- print(" jns .L3")
- print(" neg DWORD [rbp-36]")
- print(" mov DWORD [rbp-8], 1")
- print(".L3:")
- print(" mov edx, DWORD [rbp-36]")
- print(" movsx rax, edx")
- print(" imul rax, rax, 1717986919")
- print(" shr rax, 32")
- print(" mov ecx, eax")
- print(" sar ecx, 2")
- print(" mov eax, edx")
- print(" sar eax, 31")
- print(" sub ecx, eax")
- print(" mov eax, ecx")
- print(" sal eax, 2")
- print(" add eax, ecx")
- print(" add eax, eax")
- print(" sub edx, eax")
- print(" mov DWORD [rbp-12], edx")
- print(" mov eax, DWORD [rbp-12]")
- print(" add eax, 48")
- print(" mov edx, eax")
- print(" mov eax, DWORD [rbp-4]")
- print(" cdqe")
- print(" mov BYTE [rbp-32+rax], dl")
- print(" mov eax, DWORD [rbp-12]")
- print(" sub DWORD [rbp-36], eax")
- print(" mov eax, DWORD [rbp-36]")
- print(" movsx rdx, eax")
- print(" imul rdx, rdx, 1717986919")
- print(" shr rdx, 32")
- print(" mov ecx, edx")
- print(" sar ecx, 2")
- print(" cdq")
- print(" mov eax, ecx")
- print(" sub eax, edx")
- print(" mov DWORD [rbp-36], eax")
- print(" sub DWORD [rbp-4], 1")
- print(" cmp DWORD [rbp-36], 0")
- print(" jne .L3")
- print(" cmp DWORD [rbp-8], 0")
- print(" je .L4")
- print(" mov eax, DWORD [rbp-4]")
- print(" cdqe")
- print(" mov BYTE [rbp-32+rax], 45")
- print(" sub DWORD [rbp-4], 1")
- print(".L4:")
- print(" mov eax, 20")
- print(" sub eax, DWORD [rbp-4]")
- print(" cdqe")
- print(" mov edx, DWORD [rbp-4]")
- print(" movsx rdx, edx")
- print(" lea rcx, [rbp-32]")
- print(" add rcx, rdx")
- print(" mov rdx, rax")
- print(" mov rsi, rcx")
- print(" mov edi, 1")
- print(" mov rax, 1")
- print(" syscall")
- print(" nop")
- print(" leave")
- print(" ret")
+ fmt.Printf(mapX86_64linux(Operation{name: "boilerPlateExit"}))
+ if printDumpFunc {
+ fmt.Printf(mapX86_64linux(Operation{name: "dumpFunc"}))
+ }
print("section .data")
for i := 0; i < len(strings); i++ {
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-01 15:13:07 +0000