Added stack tracer

idk why

2 files changed, 15 insertions, 0 deletions

diff --git a/libc/inc/print.h b/libc/inc/print.h
index 90a715c..110ba4c 100644
--- a/libc/inc/print.h
+++ b/libc/inc/print.h
@@ -20,6 +20,7 @@ int err(int code, const char *format, ...);
 #else
 #include <proc.h>
 int print_app(enum stream_defaults id, const char *proc_name, const char *str);
+void print_trace(u32 count);
 #endif
 
 #endif
diff --git a/libc/print.c b/libc/print.c
index 91ecf8f..ca2ab98 100644
--- a/libc/print.c
+++ b/libc/print.c
@@ -214,6 +214,20 @@ int print(const char *str)
 	return strlen(str);
 }
 
+void print_trace(u32 count)
+{
+	struct frame {
+		struct frame *ebp;
+		u32 eip;
+	} * stk;
+	__asm__ volatile("movl %%ebp, %0;" : "=r"(stk));
+	print("EBP\tEIP\n");
+	for (u32 i = 0; stk && i < count; i++) {
+		printf("0x%x\t0x%x\n", stk->ebp, stk->eip);
+		stk = stk->ebp;
+	}
+}
+
 #endif
 
 void panic(const char *format, ...)