elf loader (#5508)

* elf loader

* cleanup

* cleaner

* cleaner

* fixes

* revert this

* fix div 0

* fix nv

* amd fix

* fix mockgpu

* amd better?

* restore relocs for <12.4

* linter

* this is fixed now

* revert this

* process cdefines as function

* cleaner

* align

* save lines

* revert this change

autogen_stubs.sh

@@ -39,6 +39,56 @@ def _try_dlopen_$name():
 EOF
 }
 
+process_cdefines() {
+  local input_file="$1"
+  local output_file="$2"
+
+  sed -E '
+    # Remove single-line comments
+    s/[[:space:]]*\/\*.*\*\///g
+
+    # Remove multi-line comments
+    /\/\*/,/\*\//d
+
+    /.*DT_MIPS_NUM.*/d
+
+    # Remove lines ending with backslash (multi-line macros)
+    /\\$/d
+
+    # Convert C integer literals (remove U suffix)
+    s/\b([0-9]+)U\b/\1/g
+
+    # Convert C types to Python ctypes
+    s/\bunsigned char\b/ctypes.c_ubyte/g
+    s/\bsigned char\b/ctypes.c_byte/g
+    s/\bunsigned short\b/ctypes.c_ushort/g
+    s/\bshort\b/ctypes.c_short/g
+    s/\bunsigned int\b/ctypes.c_uint/g
+    s/\bint\b/ctypes.c_int/g
+    s/\bunsigned long\b/ctypes.c_ulong/g
+    s/\blong\b/ctypes.c_long/g
+    s/\bfloat\b/ctypes.c_float/g
+    s/\bdouble\b/ctypes.c_double/g
+
+    # Function-like macros with parameters
+    /^#define[[:space:]]+([[:alnum:]_]+)[[:space:]]*\(([^)]*)\)[[:space:]]+(.+)/ {
+      s//def \1(\2): return \3/
+      p
+      d
+    }
+
+    # Simple #define statements (including those with parentheses)
+    /^#define[[:space:]]+([[:alnum:]_]+)[[:space:]]+(.+)/ {
+      s//\1 = \2/
+      p
+      d
+    }
+
+    # Drop all other lines
+    d
+  ' "$input_file" >> "$output_file"
+}
+
 generate_opencl() {
   clang2py /usr/include/CL/cl.h -o $BASE/opencl.py -l /usr/lib/x86_64-linux-gnu/libOpenCL.so.1 -k cdefstum
   fixup $BASE/opencl.py
@@ -210,9 +260,12 @@ generate_libc() {
   clang2py \
     $(dpkg -L libc6-dev | grep sys/mman.h) \
     $(dpkg -L libc6-dev | grep sys/syscall.h) \
+    /usr/include/elf.h \
     /usr/include/unistd.h \
     -o $BASE/libc.py
 
+  process_cdefines "/usr/include/elf.h" "$BASE/libc.py"
+
   sed -i "s\import ctypes\import ctypes, ctypes.util, os\g" $BASE/libc.py
   sed -i "s\FIXME_STUB\libc\g" $BASE/libc.py
   sed -i "s\FunctionFactoryStub()\ctypes.CDLL(ctypes.util.find_library('c'))\g" $BASE/libc.py