[hle] support passing arguments to homebrew applications (#4013)

Homebrew (.NRO) program args support

Adds a 'program_args' setting and delivers it to NRO homebrews via libnx's homebrew ABI. NROs previously had no way to receive CLI flags (e.g. NZ:P's -noglsl).

Setting: program_args, Category::System, startup-only.
Surfaced in Qt + Android Debug sections.

NRO loader: builds a 4-entry 'ConfigEntry' table + argv at the data segment tail; prepends 'homebrew ' so user args land at argv[1]; scans for 'svc #7' to use as LR. Drops the stale NSO-style argdata append.

KProcess: stores loader-provided guest addresses; 'Run' switches to the homebrew entry (x0=config_ptr, x1=-1, lr=svc7) and patches the real MainThreadHandle into the ConfigEntry slot. Legacy NSO path unchanged.

Tested on NZP — args reach 'argv' correctly.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4013
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/core/hle/kernel/k_process.h b/src/core/hle/kernel/k_process.h
index b3922444cc..2413e5bfd9 100644
--- a/src/core/hle/kernel/k_process.h
+++ b/src/core/hle/kernel/k_process.h
@@ -84,6 +84,9 @@ private:
     Core::Memory::Memory m_memory;
     KCapabilities m_capabilities{};
     KProcessAddress m_code_address{};
+    KProcessAddress m_arg_pointer{};
+    KProcessAddress m_arg_return_address{};
+    KProcessAddress m_main_thread_handle_addr{};
     KHandleTable m_handle_table;
     KProcessAddress m_plr_address{};
     ThreadList m_thread_list{};
@@ -219,6 +222,16 @@ public:
         return m_code_address;
     }
 
+    void SetArgPointer(KProcessAddress addr) {
+        m_arg_pointer = addr;
+    }
+    void SetArgReturnAddress(KProcessAddress addr) {
+        m_arg_return_address = addr;
+    }
+    void SetMainThreadHandleAddr(KProcessAddress addr) {
+        m_main_thread_handle_addr = addr;
+    }
+
     size_t GetMainStackSize() const {
         return m_main_thread_stack_size;
     }