From e48cfddeb004f9355c915f0a416682a1f83ed717 Mon Sep 17 00:00:00 2001
From: Nikolai Nosov <nnosov@gmail.com>
Date: Sat, 25 Jan 2020 17:22:45 +0400
Subject: [PATCH] print_stack() raw implementation

---
 framework/common.cpp | 19 +++++++++++++++++++
 framework/common.h   |  1 +
 2 files changed, 20 insertions(+)

diff --git a/framework/common.cpp b/framework/common.cpp
index 3d12f34..64a6fdc 100644
--- a/framework/common.cpp
+++ b/framework/common.cpp
@@ -83,6 +83,25 @@ bool dwarf_value::get_generic(uint64_t& v)
     return true;
 }
 
+void __pst_context::print_stack(int max, uint64_t next_cfa)
+{
+    log(SEVERITY_DEBUG, "CFA = %#lX, NEXT_CFA = %#lX, SP = %#lX", cfa, next_cfa, sp);
+    buff[0] = 0; offset = 0;
+    int i = 0;
+    if(cfa > sp) {
+        print("Args: ");
+        for(; i < max && (cfa - i) > sp; ++i) {
+            print("#%d 0x%lX ", i, *(uint64_t*)(cfa - i));
+        }
+    }
+    if((cfa - i) > next_cfa) {
+        print("Vars: ");
+        for(; i < max && (cfa - i) > next_cfa; ++i) {
+            print("#%d 0x%lX ", i, *(uint64_t*)(cfa - i));
+        }
+    }
+}
+
 void __pst_context::print_registers(int from, int to)
 {
     buff[0] = 0; offset = 0;
diff --git a/framework/common.h b/framework/common.h
index 4f44715..2912baa 100644
--- a/framework/common.h
+++ b/framework/common.h
@@ -24,6 +24,7 @@ typedef struct __pst_context {
 	void log(SC_LogSeverity severity, const char*fmt, ...);
 	uint32_t print_expr_block(Dwarf_Op *exprs, int len, char* buff, uint32_t buff_size, Dwarf_Attribute* attr = 0);
 	void print_registers(int from, int to);
+	void print_stack(int max, uint64_t next_cfa);
 
 	ucontext_t*					hcontext;	// context of signal handler
 	unw_context_t				context;	// context of stack trace