From 91c7d606381f646649dfb1d39d422b7615172282 Mon Sep 17 00:00:00 2001
From: Jonathan Herrewijnen <j.herrewijnen@nfi.nl>
Date: Tue, 27 Aug 2024 20:18:39 +0200
Subject: [PATCH] Adding third (variable) debugger

---
 source/gupje_device/Makefile                      |  9 ++++++++-
 source/gupje_device/device.h                      |  8 ++++++++
 source/gupje_device/reloc_linkscript_0x2019e5c.ld | 14 ++++++++++++++
 source/gupje_device/reloc_symbols_0x2019e5c.txt   | 12 ++++++++++++
 4 files changed, 42 insertions(+), 1 deletion(-)
 create mode 100644 source/gupje_device/reloc_linkscript_0x2019e5c.ld
 create mode 100644 source/gupje_device/reloc_symbols_0x2019e5c.txt

diff --git a/source/gupje_device/Makefile b/source/gupje_device/Makefile
index 62d0aa5..c0063f6 100644
--- a/source/gupje_device/Makefile
+++ b/source/gupje_device/Makefile
@@ -8,7 +8,7 @@ OBJCOPY := $(ANDROID_NDK_ROOT)/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64
 LD := $(ANDROID_NDK_ROOT)/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-ld.bfd
 
 #==================Target Samsung S7 (8890)==================
-all: samsung_s7 samsung_s7_reloc
+all: samsung_s7 samsung_s7_reloc samsung_s7_reloc_0x2019e5c
 
 CFLAGS_SAMSUNGS7 = -Os -Idevices/samsung_s7/
 samsung_s7:
@@ -26,3 +26,10 @@ samsung_s7_reloc:
 	$(LD) -T devices/samsung_s7/reloc_linkscript.ld bin/samsung_s7/reloc_entry.o bin/samsung_s7/reloc_debugger.o -o bin/samsung_s7/reloc_debugger.elf --just-symbols=devices/samsung_s7/reloc_symbols.txt
 	$(OBJCOPY) -O binary bin/samsung_s7/reloc_debugger.elf bin/samsung_s7/reloc_debugger.bin
 
+CFLAGS_SAMSUNGS7_RELOC_0x2019e5c = -Os -DRELOC_DEBUGGER_2=1 -Idevices/samsung_s7/ 
+samsung_s7_reloc_0x2019e5c:
+	[ -d bin/samsung_s7 ] || mkdir -p bin/samsung_s7/
+	$(CC) arm64_stub.S -c -o bin/samsung_s7/reloc_entry_0x2019e5c.o $(CFLAGS_SAMSUNGS7_RELOC_0x2019e5c)
+	$(CC) debugger.c -c -o bin/samsung_s7/reloc_debugger_0x2019e5c.o $(CFLAGS_SAMSUNGS7_RELOC_0x2019e5c)
+	$(LD) -T devices/samsung_s7/reloc_linkscript_0x2019e5c.ld bin/samsung_s7/reloc_entry_0x2019e5c.o bin/samsung_s7/reloc_debugger_0x2019e5c.o -o bin/samsung_s7/reloc_debugger_0x2019e5c.elf --just-symbols=devices/samsung_s7/reloc_symbols_0x2019e5c.txt
+	$(OBJCOPY) -O binary bin/samsung_s7/reloc_debugger_0x2019e5c.elf bin/samsung_s7/reloc_debugger_0x2019e5c.bin
diff --git a/source/gupje_device/device.h b/source/gupje_device/device.h
index d255992..ac46c8f 100644
--- a/source/gupje_device/device.h
+++ b/source/gupje_device/device.h
@@ -29,6 +29,14 @@ int mystrlen(char *data) {
 #define data_received 0x206f100
 #endif
 
+#ifdef RELOC_DEBUGGER_2
+#define recv_buffer 0x14AC4200
+#define data_received 0x14AC4000
+#else
+#define recv_buffer 0x206f000 //0x02021800 + 0x3000
+#define data_received 0x206f100
+#endif
+
 void recv_data_cb(uint32_t endpoint, uint32_t len){
     char *dest_buf = (char *)recv_buffer;
     volatile void *dref = (void *)data_received;
diff --git a/source/gupje_device/reloc_linkscript_0x2019e5c.ld b/source/gupje_device/reloc_linkscript_0x2019e5c.ld
new file mode 100644
index 0000000..2f4f5ed
--- /dev/null
+++ b/source/gupje_device/reloc_linkscript_0x2019e5c.ld
@@ -0,0 +1,14 @@
+MEMORY {
+    ROM (rwx): ORIGIN = 0x14AC0000, LENGTH = 0x1000
+}
+
+SECTIONS
+{
+     . = 0x14AC0000;
+     .text . : {
+          *(.text*)
+          *(.data*)
+          *(.rodata*)
+     } >ROM
+
+}
\ No newline at end of file
diff --git a/source/gupje_device/reloc_symbols_0x2019e5c.txt b/source/gupje_device/reloc_symbols_0x2019e5c.txt
new file mode 100644
index 0000000..7d4de78
--- /dev/null
+++ b/source/gupje_device/reloc_symbols_0x2019e5c.txt
@@ -0,0 +1,12 @@
+debugger_storage = 0x14AC3000;
+debugger_stack = 0x14AC2000;
+debugger_entry = 0x14AC0000;
+
+maybe_usb_setup_read = 0x00006f88;
+dwc3_ep0_start_trans = 0x0000791c;
+usb_event_handler = 0x00007bac;
+get_endpoint_recv_buffer = 0x00007a7c;
+exynos_sleep = 0x000027c8;
+
+g_recv_buffer = 0x14AC4200;
+g_data_received = 0x14AC4000;
\ No newline at end of file