TCF Agent: PowerPC disassembler: added pretty printing facilities

Borrowed from ARM disassembler with minimal changes.

Signed-off-by: Stanislav Yakovlev <stas.yakovlev@gmail.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/agent/machine/powerpc/tcf/disassembler-powerpc.c b/agent/machine/powerpc/tcf/disassembler-powerpc.c
index bbd5f9a8..35ec6db0 100644
--- a/agent/machine/powerpc/tcf/disassembler-powerpc.c
+++ b/agent/machine/powerpc/tcf/disassembler-powerpc.c
@@ -18,6 +18,38 @@
 #include <machine/powerpc/tcf/disassembler-powerpc.h>
 
 static char buf[128];
+static size_t buf_pos = 0;
+
+static void add_char(char ch) {
+    if (buf_pos >= sizeof(buf) - 1) return;
+    buf[buf_pos++] = ch;
+    if (ch == ' ') while (buf_pos < 8) buf[buf_pos++] = ch;
+}
+
+static void add_str(const char * s) {
+    while (*s) add_char(*s++);
+}
+
+static void add_dec_uint8(uint8_t n) {
+    char buf[32];
+
+    snprintf(buf, sizeof(buf), "%u", (unsigned int)n);
+    add_str(buf);
+}
+
+static void add_dec_int16(int16_t n) {
+    char buf[32];
+
+    snprintf(buf, sizeof(buf), "%d", (int)n);
+    add_str(buf);
+}
+
+static void add_hex_uint16(uint16_t n) {
+    char buf[32];
+
+    snprintf(buf, sizeof(buf), "0x%.4x", (unsigned int)n);
+    add_str(buf);
+}
 
 DisassemblyResult * disassemble_powerpc(uint8_t * code,
         ContextAddress addr, ContextAddress size, DisassemblerParams * params) {
@@ -27,6 +59,7 @@ DisassemblyResult * disassemble_powerpc(uint8_t * code,
     if (size < 4) return NULL;
     memset(&dr, 0, sizeof(dr));
     dr.size = 4;
+    buf_pos = 0;
 
     instr = code[0];
     instr <<= 8;