Merge pull request #44 from spicyjpeg/actions

GitHub Actions CI, psxcd and libc fixes, new examples

1 files changed, 151 insertions, 0 deletions

diff --git a/libpsn00b/cmake/flags.cmake b/libpsn00b/cmake/flags.cmake
new file mode 100644
index 0000000..249c5b4
--- /dev/null
+++ b/libpsn00b/cmake/flags.cmake
@@ -0,0 +1,151 @@
+# libpsn00b interface targets
+# (C) 2021 spicyjpeg - MPL licensed
+
+# This script creates several "virtual" targets (psn00bsdk_*) that set include
+# directories and compiler flags when a target is linked against them. The
+# following targets are currently defined:
+# - psn00bsdk_common
+# - psn00bsdk_object_lib (same as psn00bsdk_common)
+# - psn00bsdk_static_exe
+# - psn00bsdk_dynamic_exe
+# - psn00bsdk_static_lib
+# - psn00bsdk_shared_lib
+# - psn00bsdk_module_lib (same as psn00bsdk_shared_lib)
+#
+# NOTE: building a static library and linking it as part of a DLL is currently
+# *not* supported.
+
+if(NOT TARGET psn00bsdk_common) # Include guard
+
+add_library(psn00bsdk_common INTERFACE)
+
+foreach(
+	_target IN ITEMS
+		object_lib
+		static_exe
+		dynamic_exe
+		static_lib
+		shared_lib
+		module_lib
+)
+	add_library          (psn00bsdk_${_target} INTERFACE)
+	target_link_libraries(psn00bsdk_${_target} INTERFACE psn00bsdk_common)
+endforeach()
+
+# Options common to all target types:
+# - Define PLAYSTATION=1
+# - Optimize for MIPS R3000
+# - Inject zero checks into division operations (will throw breaks)
+# - All standard libraries (including libgcc) disabled
+# - Put all symbols into separate sections when building
+# - C++ features that require runtime support disabled
+# - Unused section stripping enabled
+target_compile_options(
+	psn00bsdk_common INTERFACE
+		# CPU options
+		-msoft-float
+		-march=r3000
+		-mtune=r3000
+		-mabi=32
+		-mdivide-breaks
+		-O2
+		# Standard library options
+		-ffreestanding
+		-fno-builtin
+		-nostdlib
+		# Other options
+		-fdata-sections
+		-ffunction-sections
+		-fsigned-char
+		-fno-strict-overflow
+		-fdiagnostics-color=always
+	$<$<COMPILE_LANGUAGE:CXX>:
+		# C++ options
+		-fno-exceptions
+		-fno-rtti
+		-fno-unwind-tables
+		-fno-threadsafe-statics
+		-fno-use-cxa-atexit
+	>
+)
+target_link_options(
+	psn00bsdk_common INTERFACE
+		-nostdlib
+		-Wl,-gc-sections
+)
+target_compile_definitions(
+	psn00bsdk_common INTERFACE
+		PLAYSTATION=1
+		$<$<CONFIG:DEBUG>:DEBUG=1>
+)
+
+# Options for executables without support for dynamic linking:
+# - Position-independent code disabled
+# - GP-relative addressing enabled only for local symbols
+# - ABI-compatible calls disabled (incompatible with GP-relative addr)
+target_compile_options(
+	psn00bsdk_static_exe INTERFACE
+		-G8
+		-fno-pic
+		-mno-abicalls
+		-mgpopt
+		-mno-extern-sdata
+)
+target_link_options(
+	psn00bsdk_static_exe INTERFACE
+		-G8
+		-static
+)
+
+# Options for executables with support for dynamic linking:
+# - Position-independent code disabled
+# - GP-relative addressing disabled
+# - ABI-compatible calls disabled (must be performed manually)
+target_compile_options(
+	psn00bsdk_dynamic_exe INTERFACE
+		-G0
+		-fno-pic
+		-mno-abicalls
+		-mno-gpopt
+)
+target_link_options(
+	psn00bsdk_dynamic_exe INTERFACE
+		-G0
+		-static
+)
+
+# Options for static libraries:
+# - Position-independent code disabled
+# - GP-relative addressing disabled
+# - ABI-compatible calls disabled
+# - Local stripping enabled
+target_compile_options(
+	psn00bsdk_static_lib INTERFACE
+		-G0
+		-fno-pic
+		-mno-abicalls
+		-mno-gpopt
+		-Wa,--strip-local-absolute
+)
+
+# Options for dynamically-loaded libraries:
+# - Position-independent code enabled
+# - GP-relative addressing disabled (incompatible with ABI calls)
+# - ABI-compatible calls enabled
+target_compile_options(
+	psn00bsdk_shared_lib INTERFACE
+		-G0
+		-fPIC
+		-mabicalls
+		-mno-gpopt
+		-mshared
+)
+target_link_options(
+	psn00bsdk_shared_lib INTERFACE
+		-G0
+		-shared
+)
+
+target_link_libraries(psn00bsdk_module_lib INTERFACE psn00bsdk_shared_lib)
+
+endif()