Add Nintendo Switch port.

Contributed by Swyter and vdweller84.

6 files changed, 179 insertions, 4 deletions

diff --git a/src/lib_io.c b/src/lib_io.c
index 7f218e49..c22faa24 100644
--- a/src/lib_io.c
+++ b/src/lib_io.c
@@ -439,7 +439,7 @@ LJLIB_CF(io_popen)
 LJLIB_CF(io_tmpfile)
 {
   IOFileUD *iof = io_file_new(L);
-#if LJ_TARGET_PS3 || LJ_TARGET_PS4 || LJ_TARGET_PS5 || LJ_TARGET_PSVITA
+#if LJ_TARGET_PS3 || LJ_TARGET_PS4 || LJ_TARGET_PS5 || LJ_TARGET_PSVITA || LJ_TARGET_NX
   iof->fp = NULL; errno = ENOSYS;
 #else
   iof->fp = tmpfile();
diff --git a/src/lib_os.c b/src/lib_os.c
index eb8704cf..6bcd0147 100644
--- a/src/lib_os.c
+++ b/src/lib_os.c
@@ -76,7 +76,7 @@ LJLIB_CF(os_rename)
 
 LJLIB_CF(os_tmpname)
 {
-#if LJ_TARGET_PS3 || LJ_TARGET_PS4 || LJ_TARGET_PS5 || LJ_TARGET_PSVITA
+#if LJ_TARGET_PS3 || LJ_TARGET_PS4 || LJ_TARGET_PS5 || LJ_TARGET_PSVITA || LJ_TARGET_NX
   lj_err_caller(L, LJ_ERR_OSUNIQF);
   return 0;
 #else
diff --git a/src/lj_arch.h b/src/lj_arch.h
index 1852c497..882c99cb 100644
--- a/src/lj_arch.h
+++ b/src/lj_arch.h
@@ -162,6 +162,13 @@
 #define LJ_TARGET_GC64          1
 #endif
 
+#ifdef __NX__
+#define LJ_TARGET_NX            1
+#define LJ_TARGET_CONSOLE       1
+#undef NULL
+#define NULL ((void*)0)
+#endif
+
 #ifdef _UWP
 #define LJ_TARGET_UWP           1
 #if LUAJIT_TARGET == LUAJIT_ARCH_X64
diff --git a/src/lj_dispatch.h b/src/lj_dispatch.h
index 0594af51..52762eea 100644
--- a/src/lj_dispatch.h
+++ b/src/lj_dispatch.h
@@ -89,7 +89,7 @@ typedef uint16_t HotCount;
 typedef struct GG_State {
   lua_State L;                          /* Main thread. */
   global_State g;                       /* Global state. */
-#if LJ_TARGET_ARM
+#if LJ_TARGET_ARM && !LJ_TARGET_NX
   /* Make g reachable via K12 encoded DISPATCH-relative addressing. */
   uint8_t align1[(16-sizeof(global_State))&15];
 #endif
@@ -99,7 +99,7 @@ typedef struct GG_State {
 #if LJ_HASJIT
   jit_State J;                          /* JIT state. */
   HotCount hotcount[HOTCOUNT_SIZE];     /* Hot counters. */
-#if LJ_TARGET_ARM
+#if LJ_TARGET_ARM && !LJ_TARGET_NX
   /* Ditto for J. */
   uint8_t align2[(16-sizeof(jit_State)-sizeof(HotCount)*HOTCOUNT_SIZE)&15];
 #endif
diff --git a/src/lj_prng.c b/src/lj_prng.c
index fd8219de..9e57505e 100644
--- a/src/lj_prng.c
+++ b/src/lj_prng.c
@@ -87,6 +87,10 @@ extern int sys_get_random_number(void *buf, uint64_t len);
 
 extern int sceRandomGetRandomNumber(void *buf, size_t len);
 
+#elif LJ_TARGET_NX
+
+#include <unistd.h>
+
 #elif LJ_TARGET_WINDOWS || LJ_TARGET_XBOXONE
 
 #define WIN32_LEAN_AND_MEAN
@@ -176,6 +180,11 @@ int LJ_FASTCALL lj_prng_seed_secure(PRNGState *rs)
   if (sceRandomGetRandomNumber(rs->u, sizeof(rs->u)) == 0)
     goto ok;
 
+#elif LJ_TARGET_NX
+
+  if (getentropy(rs->u, sizeof(rs->u)) == 0)
+    goto ok;
+
 #elif LJ_TARGET_UWP || LJ_TARGET_XBOXONE
 
   if (BCryptGenRandom(NULL, (PUCHAR)(rs->u), (ULONG)sizeof(rs->u),
diff --git a/src/nxbuild.bat b/src/nxbuild.bat
new file mode 100644
index 00000000..c4a21f05
--- /dev/null
+++ b/src/nxbuild.bat
@@ -0,0 +1,159 @@
+@rem Script to build LuaJIT with NintendoSDK + NX Addon.

+@rem Donated to the public domain by Swyter.

+@rem

+@rem To run this script you must open a "Native Tools Command Prompt for VS".

+@rem

+@rem Either the x86 version for NX32, or x64 for the NX64 target.

+@rem This is because the pointer size of the LuaJIT host tools (buildvm.exe)

+@rem must match the cross-compiled target (32 or 64 bits).

+@rem

+@rem Then cd to this directory and run this script.

+@rem

+@rem Recommended invocation:

+@rem

+@rem nxbuild            # release build, amalgamated

+@rem nxbuild debug      # debug build, amalgamated

+@rem

+@rem Additional command-line options (not generally recommended):

+@rem

+@rem noamalg            # (after debug) non-amalgamated build

+

+@if not defined INCLUDE goto :FAIL

+@if not defined NINTENDO_SDK_ROOT goto :FAIL

+@if not defined PLATFORM goto :FAIL

+

+@if "%platform%" == "x86" goto :DO_NX32

+@if "%platform%" == "x64" goto :DO_NX64

+

+@echo Error: Current host platform is %platform%!

+@echo.

+@goto :FAIL

+

+@setlocal

+

+:DO_NX32

+@set DASC=vm_arm.dasc

+@set DASMFLAGS= -D HFABI -D FPU

+@set DASMTARGET= -D LUAJIT_TARGET=LUAJIT_ARCH_ARM

+@set HOST_PTR_SIZE=4

+goto :BEGIN

+

+:DO_NX64

+@set DASC=vm_arm64.dasc

+@set DASMFLAGS= -D ENDIAN_LE

+@set DASMTARGET= -D LUAJIT_TARGET=LUAJIT_ARCH_ARM64

+@set HOST_PTR_SIZE=8

+

+:BEGIN

+@rem ---- Host compiler ----

+@set LJCOMPILE=cl /nologo /c /MD /O2 /W3 /wo4146 /wo4244 /D_CRT_SECURE_NO_DEPRECATE

+@set LJLINK=link /nologo

+@set LJMT=mt /nologo

+@set DASMDIR=..\dynasm

+@set DASM=%DASMDIR%\dynasm.lua

+@set ALL_LIB=lib_base.c lib_math.c lib_bit.c lib_string.c lib_table.c lib_io.c lib_os.c lib_package.c lib_debug.c lib_jit.c lib_ffi.c lib_buffer.c

+

+%LJCOMPILE% host\minilua.c

+@if errorlevel 1 goto :BAD

+%LJLINK% /out:minilua.exe minilua.obj

+@if errorlevel 1 goto :BAD

+if exist minilua.exe.manifest^

+  %LJMT% -manifest minilua.exe.manifest -outputresource:minilua.exe

+

+@rem Check that we have the right 32/64 bit host compiler to generate the right virtual machine files.

+@minilua

+@if "%ERRORLEVEL%" == "%HOST_PTR_SIZE%" goto :PASSED_PTR_CHECK

+

+@echo The pointer size of the host in bytes (%HOST_PTR_SIZE%) does not match the expected value (%errorlevel%).

+@echo Check that the script is being ran under the correct x86/x64 VS prompt.

+@goto :BAD

+

+:PASSED_PTR_CHECK

+@set DASMFLAGS=%DASMFLAGS% %DASMTARGET% -D LJ_TARGET_NX -D LUAJIT_OS=LUAJIT_OS_OTHER -D LUAJIT_DISABLE_JIT -D LUAJIT_DISABLE_FFI

+minilua %DASM% -LN %DASMFLAGS% -o host\buildvm_arch.h %DASC%

+@if errorlevel 1 goto :BAD

+%LJCOMPILE% /I "." /I %DASMDIR% %DASMTARGET% -D LJ_TARGET_NX -DLUAJIT_OS=LUAJIT_OS_OTHER -DLUAJIT_DISABLE_JIT -DLUAJIT_DISABLE_FFI host\buildvm*.c

+@if errorlevel 1 goto :BAD

+%LJLINK% /out:buildvm.exe buildvm*.obj

+@if errorlevel 1 goto :BAD

+if exist buildvm.exe.manifest^

+  %LJMT% -manifest buildvm.exe.manifest -outputresource:buildvm.exe

+

+buildvm -m elfasm -o lj_vm.s

+@if errorlevel 1 goto :BAD

+buildvm -m bcdef -o lj_bcdef.h %ALL_LIB%

+@if errorlevel 1 goto :BAD

+buildvm -m ffdef -o lj_ffdef.h %ALL_LIB%

+@if errorlevel 1 goto :BAD

+buildvm -m libdef -o lj_libdef.h %ALL_LIB%

+@if errorlevel 1 goto :BAD

+buildvm -m recdef -o lj_recdef.h %ALL_LIB%

+@if errorlevel 1 goto :BAD

+buildvm -m vmdef -o jit\vmdef.lua %ALL_LIB%

+@if errorlevel 1 goto :BAD

+buildvm -m folddef -o lj_folddef.h lj_opt_fold.c

+@if errorlevel 1 goto :BAD

+

+@rem ---- Cross compiler ----

+@if "%platform%" neq "x64" goto :NX32_CROSSBUILD

+@set LJCOMPILE="%NINTENDO_SDK_ROOT%\Compilers\NX\nx\aarch64\bin\clang" -Wall -I%NINTENDO_SDK_ROOT%\Include %DASMTARGET% -DLUAJIT_OS=LUAJIT_OS_OTHER -DLUAJIT_DISABLE_JIT -DLUAJIT_DISABLE_FFI -DLUAJIT_USE_SYSMALLOC -c

+@set LJLIB="%NINTENDO_SDK_ROOT%\Compilers\NX\nx\aarch64\bin\aarch64-nintendo-nx-elf-ar" rc

+@set TARGETLIB_SUFFIX=nx64

+

+%NINTENDO_SDK_ROOT%\Compilers\NX\nx\aarch64\bin\aarch64-nintendo-nx-elf-as -o lj_vm.o lj_vm.s

+goto :DEBUGCHECK

+

+:NX32_CROSSBUILD

+@set LJCOMPILE="%NINTENDO_SDK_ROOT%\Compilers\NX\nx\armv7l\bin\clang" -Wall -I%NINTENDO_SDK_ROOT%\Include %DASMTARGET% -DLUAJIT_OS=LUAJIT_OS_OTHER -DLUAJIT_DISABLE_JIT -DLUAJIT_DISABLE_FFI -DLUAJIT_USE_SYSMALLOC -c

+@set LJLIB="%NINTENDO_SDK_ROOT%\Compilers\NX\nx\armv7l\bin\armv7l-nintendo-nx-eabihf-ar" rc

+@set TARGETLIB_SUFFIX=nx32

+

+%NINTENDO_SDK_ROOT%\Compilers\NX\nx\armv7l\bin\armv7l-nintendo-nx-eabihf-as -o lj_vm.o lj_vm.s

+:DEBUGCHECK

+

+@if "%1" neq "debug" goto :NODEBUG

+@shift

+@set LJCOMPILE=%LJCOMPILE% -DNN_SDK_BUILD_DEBUG -g -O0

+@set TARGETLIB=libluajitD_%TARGETLIB_SUFFIX%.a

+goto :BUILD

+:NODEBUG

+@set LJCOMPILE=%LJCOMPILE% -DNN_SDK_BUILD_RELEASE -O3

+@set TARGETLIB=libluajit_%TARGETLIB_SUFFIX%.a

+:BUILD

+del %TARGETLIB%

+@if "%1" neq "noamalg" goto :AMALG

+for %%f in (lj_*.c lib_*.c) do (

+  %LJCOMPILE% %%f

+  @if errorlevel 1 goto :BAD

+)

+

+%LJLIB% %TARGETLIB% lj_*.o lib_*.o

+@if errorlevel 1 goto :BAD

+@goto :NOAMALG

+:AMALG

+%LJCOMPILE% ljamalg.c

+@if errorlevel 1 goto :BAD

+%LJLIB% %TARGETLIB% ljamalg.o lj_vm.o

+@if errorlevel 1 goto :BAD

+:NOAMALG

+

+@del *.o *.obj *.manifest minilua.exe buildvm.exe

+@echo.

+@echo === Successfully built LuaJIT for Nintendo Switch (%TARGETLIB_SUFFIX%) ===

+

+@goto :END

+:BAD

+@echo.

+@echo *******************************************************

+@echo *** Build FAILED -- Please check the error messages ***

+@echo *******************************************************

+@goto :END

+:FAIL

+@echo To run this script you must open a "Native Tools Command Prompt for VS".

+@echo.

+@echo Either the x86 version for NX32, or x64 for the NX64 target.

+@echo This is because the pointer size of the LuaJIT host tools (buildvm.exe)

+@echo must match the cross-compiled target (32 or 64 bits).

+@echo.

+@echo Keep in mind that NintendoSDK + NX Addon must be installed, too.

+:END