From 653fdc8cdc1040cc5647a7cebfd274bf49bd8a21 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juan=20Manuel=20Tom=C3=A1s?= <jtomas1815@gmail.com>
Date: Mon, 4 Jul 2022 03:44:29 -0300
Subject: Initial Commit

---
 main.py | 90 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 main.py

(limited to 'main.py')

diff --git a/main.py b/main.py
new file mode 100644
index 0000000..b2fd03e
--- /dev/null
+++ b/main.py
@@ -0,0 +1,90 @@
+parameter_registers = ['rdi', 'rsi', 'rdx', 'rcx', 'r8', 'r9']
+return_registers = ['rax', 'rdx']
+
+syscall_registers = ['rdi', 'rsi', 'rdx', 'r10', 'r8', 'r9']
+static_chain_pointer = 'r10'
+
+fparameter_registers = ['xmm0', 'xmm1', 'xmm2', 'xmm3', 'xmm4', 'xmm5', 'xmm6', 'xmm7']
+freturn_registers = ['xmm0', 'xmm1']
+
+callee_must_clean = ['rbx', 'rsp', 'rbp', 'r12', 'r13', 'r14', 'r15']
+
+code = []
+
+code.append('format elf64 executable 3')
+code.append('entry start')
+code.append('print:')
+code.append('mov [rsp - 8], rbx')
+code.append('mov rax, [rsp + 8]')
+code.append('mov rdi, 10')
+code.append('xor rcx, rcx')
+code.append('print_loop0:')
+code.append('mov [int_buffer + rcx], 48')
+code.append('inc rcx')
+code.append('cmp rcx, 20')
+code.append('jl print_loop0')
+code.append('xor rbx, rbx')
+code.append('xor rdx, rdx')
+code.append('print_loop1:')
+code.append('div rdi')
+code.append('dec rcx')
+code.append('inc rbx')
+code.append('add [int_buffer + rcx], dl')
+code.append('xor rdx, rdx')
+code.append('cmp rax, 0')
+code.append('jg print_loop1')
+code.append('mov rax, 1')
+code.append('mov rdi, 1')
+code.append('lea rsi, [int_buffer + rcx]')
+code.append('mov rdx, rbx')
+code.append('syscall')
+code.append('mov [int_buffer], 10')
+code.append('mov rax, 1')
+code.append('mov rdi, 1')
+code.append('mov rsi, int_buffer')
+code.append('mov rdx, 1')
+code.append('syscall')
+code.append('mov rbx, [rsp - 8]')
+code.append('ret')
+
+code.append('start:')
+with open('input.stk', 'r') as f:
+    text = f.read()
+    words = text.replace('\n', ' ').strip().split(' ')
+    for word in words:
+        if word.isdecimal():
+            code.append('push ' + word)
+        elif word == '+':
+            code.append('pop rax')
+            code.append('pop rdi')
+            code.append('add rax, rdi')
+            code.append('push rax')
+        elif word == '-':
+            code.append('pop rax')
+            code.append('pop rdi')
+            code.append('sub rax, rdi')
+            code.append('push rax')
+        elif word == '*':
+            code.append('pop rax')
+            code.append('pop rdi')
+            code.append('mul rdi')
+            code.append('push rax')
+        elif word == 'pop':
+            code.append('pop rax')
+        elif word == 'dup':
+            code.append('pop rax')
+            code.append('push rax')
+            code.append('push rax')
+        elif word == 'print':
+            code.append('call print')
+        else:
+            print('Unknown word:', word)
+
+code.append('mov rax, 60')
+code.append('mov rdi, 0')
+code.append('syscall')
+code.append('segment writable')
+code.append('int_buffer rb 20')
+
+for line in code:
+    print(line)
-- 
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