fix gnu ld warning, add pmm code

scripts/gensectioninfo.py

@@ -39,18 +39,18 @@ def main() -> int:
     section_csyms = Template(
 """
 // --- SECTIONINFO START: ${section} ---
-extern const char*  zerOS_${section}_start;
-extern const char*  zerOS_${section}_end;
-extern const size_t zerOS_${section}_size;
+extern const symbol zerOS_${section}_start;
+extern const symbol zerOS_${section}_end;
+static const size_t zerOS_${section}_size = (size_t)((uintptr_t)(const void*)zerOS_${section}_end - (uintptr_t)(const void*)zerOS_${section}_start);
 // --- SECTIONINFO END: ${section} ---
 """
     )
     section_ldsyms = Template(
 """
 /* --- SECTIONINFO START: ${section} --- */
-zerOS_${section}_start = ABSOLUTE(ADDR(.${section}));
-zerOS_${section}_end = ABSOLUTE(ADDR(.${section})) + SIZEOF(.${section});
-zerOS_${section}_size = SIZEOF(.${section});
+ASSERT(LOADADDR(.${section}) == ABSOLUTE(ADDR(.${section})), "Section ${section} is not loaded at the correct address");
+zerOS_${section}_start = LOADADDR(.${section});
+zerOS_${section}_end = LOADADDR(.${section}) + SIZEOF(.${section});
 /* --- SECTIONINFO END: ${section} --- */
 """
     )
@@ -62,8 +62,12 @@ def main() -> int:
         todump_ldsyms += section_ldsyms.substitute(section=sec)
 
     todump_csyms  = f"\n// --- SECTIONINFO AUTOGENERATED BY {os.path.realpath(__file__)}, START ---\n" \
+                  + "#ifndef __ZEROS_SECTIONINFO_H__\n"                                                \
+                  + "#define __ZEROS_SECTIONINFO_H__\n"                                                \
                   + "#include <stddef.h>\n"                                                            \
+                  + "#include <misc/symbol.h>\n"                                                       \
                   + todump_csyms                                                                       \
+                  + "#endif\n"                                                                         \
                   + f"\n// --- SECTIONINFO AUTOGENERATED BY {os.path.realpath(__file__)}, END ---\n"
     todump_ldsyms = f"\n/* --- SECTIONINFO AUTOGENERATED BY {os.path.realpath(__file__)}, START --- */\n" \
                   + todump_ldsyms                                                                         \

zerOS/GNUmakefile

@@ -247,7 +247,7 @@ $(call CMD,10,/usr/bin/true,GENCONFIG,$@)
 @echo "#define zerOS_CONFIG_UNDER_QEMU $(if $(KQEMU),1,0)" >> $@
 @echo "" >> $@
 @echo "#undef  zerOS_CONFIG_MAX_USABLE_MEMORY_REGIONS" >> $@
-@echo "#define zerOS_CONFIG_MAX_USABLE_MEMORY_REGIONS 32" >> $@
+@echo "#define zerOS_CONFIG_MAX_USABLE_MEMORY_REGIONS 64UL" >> $@
 @echo "" >> $@
 @cat  $(KERNEL_SUPDEF_CONFIG) >> $@
 @echo "" >> $@

zerOS/include/config.h

@@ -9,14 +9,17 @@
 #define zerOS_CONFIG_ARCH x86_64
 
 #undef  zerOS_CONFIG_DEBUG
-#define zerOS_CONFIG_DEBUG true
+#define zerOS_CONFIG_DEBUG false
 
 #undef  zerOS_CONFIG_CPU_FEATURES
 #define zerOS_CONFIG_CPU_FEATURES  fpu vme de pse tsc msr pae mce cx8 apic mtrr sep pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pni pclmul dts64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 syscall xd movbe popcnt aes xsave osxsave avx rdtscp lm lahf_lm abm constant_tsc fma3 f16c rdrand x2apic avx2 bmi1 bmi2 sha_ni rdseed adx
 
 #undef  zerOS_CONFIG_UNDER_QEMU
 #define zerOS_CONFIG_UNDER_QEMU 1
 
+#undef  zerOS_CONFIG_MAX_USABLE_MEMORY_REGIONS
+#define zerOS_CONFIG_MAX_USABLE_MEMORY_REGIONS 64UL
+
 
 
 

zerOS/include/config.h.in

@@ -9,14 +9,17 @@
 #define zerOS_CONFIG_ARCH x86_64
 
 #undef  zerOS_CONFIG_DEBUG
-#define zerOS_CONFIG_DEBUG true
+#define zerOS_CONFIG_DEBUG false
 
 #undef  zerOS_CONFIG_CPU_FEATURES
 #define zerOS_CONFIG_CPU_FEATURES  fpu vme de pse tsc msr pae mce cx8 apic mtrr sep pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pni pclmul dts64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 syscall xd movbe popcnt aes xsave osxsave avx rdtscp lm lahf_lm abm constant_tsc fma3 f16c rdrand x2apic avx2 bmi1 bmi2 sha_ni rdseed adx
 
 #undef  zerOS_CONFIG_UNDER_QEMU
 #define zerOS_CONFIG_UNDER_QEMU 1
 
+#undef  zerOS_CONFIG_MAX_USABLE_MEMORY_REGIONS
+#define zerOS_CONFIG_MAX_USABLE_MEMORY_REGIONS 64UL
+
 
 #pragma supdef import <ctypesize.sd>
 #pragma supdef import <define.sd>

zerOS/include/kernel/data/bitset.h

@@ -22,6 +22,8 @@ static_assert(
 // Define bitset_t as a pointer to the underlying type
 typedef zerOS_BITSET_UNDERLYING_TYPE* bitset_t;
 
+// TODO (fixme): All bitset operation are dependent on the underlying type being used
+
 static inline void zerOS_bitset_set(bitset_t bitset, size_t bit)
 {
     size_t index  = bit / zerOS_fast_uint_bits;
@@ -48,6 +50,11 @@ static inline void zerOS_bitset_set_all(bitset_t bitset, size_t size)
     zerOS_fast_uint_set_vectorized(bitset, size, (zerOS_BITSET_UNDERLYING_TYPE)-1);
 }
 
+static inline void zerOS_bitset_clear_all(bitset_t bitset, size_t size)
+{
+    zerOS_fast_uint_set_vectorized(bitset, size, (zerOS_BITSET_UNDERLYING_TYPE)0);
+}
+
 #endif
 
 #ifndef zerOS_KERNEL_DATA_BITSET_H_INCLUDED

zerOS/include/kernel/generated/sections.h

@@ -0,0 +1,39 @@
+
+// --- SECTIONINFO AUTOGENERATED BY /home/axel/Documents/programmation/osdev/zerOS/scripts/gensectioninfo.py, START ---
+#ifndef __ZEROS_SECTIONINFO_H__
+#define __ZEROS_SECTIONINFO_H__
+#include <stddef.h>
+#include <misc/symbol.h>
+
+// --- SECTIONINFO START: text ---
+extern const symbol zerOS_text_start;
+extern const symbol zerOS_text_end;
+static const size_t zerOS_text_size = (size_t)((uintptr_t)(const void*)zerOS_text_end - (uintptr_t)(const void*)zerOS_text_start);
+// --- SECTIONINFO END: text ---
+
+// --- SECTIONINFO START: bootcode ---
+extern const symbol zerOS_bootcode_start;
+extern const symbol zerOS_bootcode_end;
+static const size_t zerOS_bootcode_size = (size_t)((uintptr_t)(const void*)zerOS_bootcode_end - (uintptr_t)(const void*)zerOS_bootcode_start);
+// --- SECTIONINFO END: bootcode ---
+
+// --- SECTIONINFO START: rodata ---
+extern const symbol zerOS_rodata_start;
+extern const symbol zerOS_rodata_end;
+static const size_t zerOS_rodata_size = (size_t)((uintptr_t)(const void*)zerOS_rodata_end - (uintptr_t)(const void*)zerOS_rodata_start);
+// --- SECTIONINFO END: rodata ---
+
+// --- SECTIONINFO START: data ---
+extern const symbol zerOS_data_start;
+extern const symbol zerOS_data_end;
+static const size_t zerOS_data_size = (size_t)((uintptr_t)(const void*)zerOS_data_end - (uintptr_t)(const void*)zerOS_data_start);
+// --- SECTIONINFO END: data ---
+
+// --- SECTIONINFO START: bss ---
+extern const symbol zerOS_bss_start;
+extern const symbol zerOS_bss_end;
+static const size_t zerOS_bss_size = (size_t)((uintptr_t)(const void*)zerOS_bss_end - (uintptr_t)(const void*)zerOS_bss_start);
+// --- SECTIONINFO END: bss ---
+#endif
+
+// --- SECTIONINFO AUTOGENERATED BY /home/axel/Documents/programmation/osdev/zerOS/scripts/gensectioninfo.py, END ---

zerOS/include/kernel/printk.h

@@ -36,7 +36,7 @@
 BOOT_FUNC
 extern int zerOS_early_vprintk(const char* str, va_list varargs);
 
-BOOT_FUNC PRINTF_LIKE(1, 2)
+BOOT_FUNC
 extern int zerOS_early_printk(const char* str, ...);
 
 #endif

zerOS/include/klibc/stdlib.h

@@ -1,5 +1,9 @@
 #ifndef zerOS_KLIBC_STDLIB_H_INCLUDED
 #define zerOS_KLIBC_STDLIB_H_INCLUDED
 
+#include <stddef.h>
+
+void* malloc(size_t);
+void free(void*);
 
 #endif

zerOS/include/machine/common/x86_64.h

@@ -11,17 +11,22 @@
 typedef uint_fast32_t zerOS_fast_uint_t;
 
 #undef  FAST_UINT_BITS
+#if 0
+// Fixme
 #define FAST_UINT_BITS(bits) KLIBC_TYPES_EQUAL(zerOS_fast_uint_t, uint##bits##_t)
+#else
+#define FAST_UINT_BITS(bits) (zerOS_fast_uint_bits == (bits))
+#endif
+
+static constexpr size_t zerOS_fast_uint_size = sizeof(zerOS_fast_uint_t);
+static constexpr size_t zerOS_fast_uint_bits = zerOS_fast_uint_size * 8;
+
+static constexpr zerOS_fast_uint_t zerOS_fast_uint_max = UINT_FAST32_MAX;
 
 static_assert(
     ( FAST_UINT_BITS(32) && !FAST_UINT_BITS(64)) ||
     (!FAST_UINT_BITS(32) &&  FAST_UINT_BITS(64)) ,
     "zerOS: fast uint should be either 32 or 64 bits"
 );
 
-static constexpr size_t zerOS_fast_uint_size = sizeof(zerOS_fast_uint_t);
-static constexpr size_t zerOS_fast_uint_bits = zerOS_fast_uint_size * 8;
-
-static constexpr zerOS_fast_uint_t zerOS_fast_uint_max = UINT_FAST32_MAX;
-
 #endif

zerOS/include/misc/symbol.h

@@ -15,4 +15,6 @@
  */
 #define SYMBOL_ALIGNED_TO(align) [[__gnu__::__aligned__(align)]]
 
+typedef unsigned char symbol[];
+
 #endif

zerOS/include/misc/units.h

@@ -0,0 +1,30 @@
+#ifndef zerOS_MISC_UNITS_H_INCLUDED
+#define zerOS_MISC_UNITS_H_INCLUDED
+
+#include <stdint.h>
+
+#undef  TiB
+#define TiB (UINT64_C(1024) * UINT64_C(1024) * UINT64_C(1024) * UINT64_C(1024))
+
+#undef  GiB
+#define GiB (UINT64_C(1024) * UINT64_C(1024) * UINT64_C(1024))
+
+#undef  MiB
+#define MiB (UINT64_C(1024) * UINT64_C(1024))
+
+#undef  KiB
+#define KiB (UINT64_C(1024))
+
+#undef  TB
+#define TB (UINT64_C(1000) * UINT64_C(1000) * UINT64_C(1000) * UINT64_C(1000))
+
+#undef  GB
+#define GB (UINT64_C(1000) * UINT64_C(1000) * UINT64_C(1000))
+
+#undef  MB
+#define MB (UINT64_C(1000) * UINT64_C(1000))
+
+#undef  KB
+#define KB (UINT64_C(1000))
+
+#endif

zerOS/include/stddef.h

@@ -34,4 +34,18 @@
     #define constexpr
 #endif
 
+#undef  likely
+/**
+ * @def likely
+ * @brief The likely branch prediction hint.
+ */
+#define likely(x) __builtin_expect(!!(x), 1)
+
+#undef  unlikely
+/**
+ * @def unlikely
+ * @brief The unlikely branch prediction hint.
+ */
+#define unlikely(x) __builtin_expect(!!(x), 0)
+
 #endif

zerOS/include/stdlib.h

@@ -0,0 +1,19 @@
+#ifndef zerOS_STDLIB_H_INCLUDED
+#define zerOS_STDLIB_H_INCLUDED
+
+#undef _GOT_REAL_STDLIB_H_
+
+#if defined(__has_include_next)
+    #if __has_include_next(<stdlib.h>)
+        #include_next <stdlib.h>
+        #define _GOT_REAL_STDLIB_H_
+    #endif
+#endif
+
+#ifndef _GOT_REAL_STDLIB_H_
+    #include <klibc/stdlib.h>
+#else
+    #undef _GOT_REAL_STDLIB_H_
+#endif
+
+#endif