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Add VGA support on bare metal (#588)

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If your main module has this declaration:

    STATIC_YOINK("vga_console");

Then a VGA driver will be linked into your executable which
displays your stdio characters on the PC display, whereas
before we could only use the serial port. Your display is an
ANSI terminal and it's still a work in progress.
This commit is contained in:
tkchia 2022-09-07 09:41:08 +08:00 • committed by GitHub
parent 598640864a
commit 3fdb1c14f1
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11 changed files with 1556 additions and 5 deletions
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58
libc/vga/vga.mk Normal file
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#-*-mode:makefile-gmake;indent-tabs-mode:t;tab-width:8;coding:utf-8-*-┐
#───vi: set et ft=make ts=8 tw=8 fenc=utf-8 :vi───────────────────────┘
PKGS += LIBC_VGA
LIBC_VGA_ARTIFACTS += LIBC_VGA_A
LIBC_VGA_A = o/$(MODE)/libc/vga/vga.a
LIBC_VGA_A_FILES := $(wildcard libc/vga/*)
LIBC_VGA_A_HDRS = $(filter %.h,$(LIBC_VGA_A_FILES))
LIBC_VGA_A_SRCS_S = $(filter %.S,$(LIBC_VGA_A_FILES))
LIBC_VGA_A_SRCS_C = $(filter %.c,$(LIBC_VGA_A_FILES))
LIBC_VGA = \
$(LIBC_VGA_A_DEPS) \
$(LIBC_VGA_A)
LIBC_VGA_A_SRCS = \
$(LIBC_VGA_A_SRCS_S) \
$(LIBC_VGA_A_SRCS_C)
LIBC_VGA_A_OBJS = \
$(LIBC_VGA_A_SRCS_S:%.S=o/$(MODE)/%.o) \
$(LIBC_VGA_A_SRCS_C:%.c=o/$(MODE)/%.o)
LIBC_VGA_A_CHECKS = \
$(LIBC_VGA_A).pkg \
$(LIBC_VGA_A_HDRS:%=o/$(MODE)/%.ok)
LIBC_VGA_A_DIRECTDEPS = \
LIBC_NEXGEN32E \
LIBC_SYSV \
LIBC_STR \
LIBC_INTRIN \
LIBC_STUBS \
LIBC_FMT
LIBC_VGA_A_DEPS := \
$(call uniq,$(foreach x,$(LIBC_VGA_A_DIRECTDEPS),$($(x))))
$(LIBC_VGA_A):libc/vga/ \
$(LIBC_VGA_A).pkg \
$(LIBC_VGA_A_OBJS)
$(LIBC_VGA_A).pkg: \
$(LIBC_VGA_A_OBJS) \
$(foreach x,$(LIBC_VGA_A_DIRECTDEPS),$($(x)_A).pkg)
LIBC_VGA_LIBS = $(foreach x,$(LIBC_VGA_ARTIFACTS),$($(x)))
LIBC_VGA_SRCS = $(foreach x,$(LIBC_VGA_ARTIFACTS),$($(x)_SRCS))
LIBC_VGA_HDRS = $(foreach x,$(LIBC_VGA_ARTIFACTS),$($(x)_HDRS))
LIBC_VGA_BINS = $(foreach x,$(LIBC_VGA_ARTIFACTS),$($(x)_BINS))
LIBC_VGA_CHECKS = $(foreach x,$(LIBC_VGA_ARTIFACTS),$($(x)_CHECKS))
LIBC_VGA_OBJS = $(foreach x,$(LIBC_VGA_ARTIFACTS),$($(x)_OBJS))
LIBC_VGA_TESTS = $(foreach x,$(LIBC_VGA_ARTIFACTS),$($(x)_TESTS))
$(LIBC_VGA_OBJS): $(BUILD_FILES) libc/vga/vga.mk
.PHONY: o/$(MODE)/libc/vga
o/$(MODE)/libc/vga: $(LIBC_VGA_CHECKS)