From b9fd2a2b9cfd2f1a84223adc9aa3dc20d74436b4 Mon Sep 17 00:00:00 2001
From: pommicket <pommicket@gmail.com>
Date: Sun, 13 Feb 2022 22:12:44 -0500
Subject: sprintf working! (but not snprintf ...)

---
 05/main.c | 52 ++++++----------------------------------------------
 1 file changed, 6 insertions(+), 46 deletions(-)

(limited to '05/main.c')

diff --git a/05/main.c b/05/main.c
index fc4b036..7503a10 100644
--- a/05/main.c
+++ b/05/main.c
@@ -1,50 +1,10 @@
-static unsigned char __syscall_data[] = {
-	// mov rax, [rsp+24]
-	0x48, 0x8b, 0x84, 0x24, 24, 0, 0, 0,
-	// mov rdi, rax
-	0x48, 0x89, 0xc7,
-	// mov rax, [rsp+32]
-	0x48, 0x8b, 0x84, 0x24, 32, 0, 0, 0,
-	// mov rsi, rax
-	0x48, 0x89, 0xc6,
-	// mov rax, [rsp+40]
-	0x48, 0x8b, 0x84, 0x24, 40, 0, 0, 0,
-	// mov rdx, rax
-	0x48, 0x89, 0xc2,
-	// mov rax, [rsp+48]
-	0x48, 0x8b, 0x84, 0x24, 48, 0, 0, 0,
-	// mov r10, rax
-	0x49, 0x89, 0xc2,
-	// mov rax, [rsp+56]
-	0x48, 0x8b, 0x84, 0x24, 56, 0, 0, 0,
-	// mov r8, rax
-	0x49, 0x89, 0xc0,
-	// mov rax, [rsp+64]
-	0x48, 0x8b, 0x84, 0x24, 64, 0, 0, 0,
-	// mov r9, rax
-	0x49, 0x89, 0xc1,
-	// mov rax, [rsp+16]
-	0x48, 0x8b, 0x84, 0x24, 16, 0, 0, 0,
-	// syscall
-	0x0f, 0x05,
-	// mov [rsp+8], rax
-	0x48, 0x89, 0x84, 0x24, 8, 0, 0, 0,
-	// ret
-	0xc3
-};
-
-#define __syscall(no, arg1, arg2, arg3, arg4, arg5, arg6)\
-	(((unsigned long (*)(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long))__syscall_data)\
-		(no, arg1, arg2, arg3, arg4, arg5, arg6))
-
-typedef unsigned long size_t;
-
-long write(int fd, void *buf, size_t count) {
-	__syscall(1, fd, buf, count, 0, 0, 0);
-}
+#include <stdio.h>
 
 int main(int argc, char **argv) {
-	write(1, "Hello, world!\n", 14);
-	return 0;
+	char buf[200] = {0};
+	sprintf(buf, "Hello, %d %.2f %g %s %p\n", 187, 77.3, 349e12, "Wow!", "yea");
+ //	snprintf(buf, 200, "Hello\n");  //<- NOT WORKING
+	write(1, buf, sizeof buf);
+	return *buf;
 }
 
-- 
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