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Update Zealbooter build system from Limine template

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This commit is contained in:
mintsuki 2024-09-30 20:07:33 +02:00
parent b7d5f81b35
commit 5bd76304ec
2 changed files with 32 additions and 30 deletions
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39
zealbooter/GNUmakefile
View file

@ -1,43 +1,40 @@
# Nuke built-in rules and variables.
override MAKEFLAGS += -rR
MAKEFLAGS += -rR
.SUFFIXES:
# This is the name that our final executable will have.
# Change as needed.
override OUTPUT := kernel
# Convenience macro to reliably declare user overridable variables.
define DEFAULT_VAR =
ifeq ($(origin $1),default)
override $(1) := $(2)
endif
ifeq ($(origin $1),undefined)
override $(1) := $(2)
endif
endef
override USER_VARIABLE = $(if $(filter $(origin $(1)),default undefined),$(eval override $(1) := $(2)))
# User controllable C compiler command.
override DEFAULT_KCC := cc
$(eval $(call DEFAULT_VAR,KCC,$(DEFAULT_KCC)))
$(call USER_VARIABLE,KCC,cc)
# User controllable linker command.
override DEFAULT_KLD := ld
$(eval $(call DEFAULT_VAR,KLD,$(DEFAULT_KLD)))
$(call USER_VARIABLE,KLD,ld)
# User controllable C flags.
override DEFAULT_KCFLAGS := -g -O2 -pipe
$(eval $(call DEFAULT_VAR,KCFLAGS,$(DEFAULT_KCFLAGS)))
$(call USER_VARIABLE,KCFLAGS,-g -O2 -pipe)
# User controllable C preprocessor flags. We set none by default.
override DEFAULT_KCPPFLAGS :=
$(eval $(call DEFAULT_VAR,KCPPFLAGS,$(DEFAULT_KCPPFLAGS)))
$(call USER_VARIABLE,KCPPFLAGS,)
# User controllable nasm flags.
override DEFAULT_KNASMFLAGS := -F dwarf -g
$(eval $(call DEFAULT_VAR,KNASMFLAGS,$(DEFAULT_KNASMFLAGS)))
$(call USER_VARIABLE,KNASMFLAGS,-F dwarf -g)
# User controllable linker flags. We set none by default.
override DEFAULT_KLDFLAGS :=
$(eval $(call DEFAULT_VAR,KLDFLAGS,$(DEFAULT_KLDFLAGS)))
$(call USER_VARIABLE,KLDFLAGS,)
# Check if KCC is Clang.
override KCC_IS_CLANG := $(shell ! $(KCC) --version 2>/dev/null | grep 'clang' >/dev/null 2>&1; echo $$?)
# If the C compiler is Clang, set the target as needed.
ifeq ($(KCC_IS_CLANG),1)
override KCC += \
-target x86_64-unknown-none
endif
# Internal C flags that should not be changed by the user.
override KCFLAGS += \

17
zealbooter/linker.ld
View file

@ -9,6 +9,7 @@ ENTRY(kmain)
/* process. */
PHDRS
{
requests PT_LOAD;
text PT_LOAD;
rodata PT_LOAD;
data PT_LOAD;
@ -22,6 +23,16 @@ SECTIONS
/* that is the beginning of the region. */
. = 0xffffffff80000000;
/* Define a section to contain the Limine requests and assign it to its own PHDR */
.requests : {
KEEP(*(.requests_start_marker))
KEEP(*(.requests))
KEEP(*(.requests_end_marker))
} :requests
/* Move to the next memory page for .text */
. = ALIGN(CONSTANT(MAXPAGESIZE));
.text : {
*(.text .text.*)
} :text
@ -38,12 +49,6 @@ SECTIONS
.data : {
*(.data .data.*)
/* Place the sections that contain the Limine requests as part of the .data */
/* output section. */
KEEP(*(.requests_start_marker))
KEEP(*(.requests))
KEEP(*(.requests_end_marker))
} :data
/* NOTE: .bss needs to be the last thing mapped to :data, otherwise lots of */