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| author | Kevin O'Connor <kevin@koconnor.net> | 2015-04-09 17:15:23 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2015-04-10 00:38:17 -0400 |
| commit | 799b20b0db45891845e2d820368a66af538d5664 (patch) | |
| tree | 7e731c80347a28629a14df607c95307526ca42c1 /Makefile | |
| parent | 3b9b9f2446e69a081c5f10a1755b62a31980c52a (diff) | |
| download | seabios-799b20b0db45891845e2d820368a66af538d5664.tar.gz | |
vgabios: Add config option for assembler fixups
Add a kconfig build option (CONFIG_VGA_FIXUP_ASM) to allow users to
build the vgabios without the complex assembler fixups that work
around emulator bugs.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 21 |
1 files changed, 11 insertions, 10 deletions
@@ -56,7 +56,7 @@ COMMONCFLAGS := -I$(OUT) -Isrc -Os -MD -g \ -Wall -Wno-strict-aliasing -Wold-style-definition \ $(call cc-option,$(CC),-Wtype-limits,) \ -m32 -march=i386 -mregparm=3 -mpreferred-stack-boundary=2 \ - -minline-all-stringops \ + -minline-all-stringops -fomit-frame-pointer \ -freg-struct-return -ffreestanding -fno-delete-null-pointer-checks \ -ffunction-sections -fdata-sections -fno-common -fno-merge-constants COMMONCFLAGS += $(call cc-option,$(CC),-nopie,) @@ -64,15 +64,14 @@ COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector,) COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,) COMMA := , -CFLAGS32FLAT := $(COMMONCFLAGS) -DMODE16=0 -DMODESEGMENT=0 -fomit-frame-pointer +CFLAGS32FLAT := $(COMMONCFLAGS) -DMODE16=0 -DMODESEGMENT=0 CFLAGSSEG := $(COMMONCFLAGS) -DMODESEGMENT=1 -fno-defer-pop \ $(call cc-option,$(CC),-fno-jump-tables,-DMANUAL_NO_JUMP_TABLE) \ $(call cc-option,$(CC),-fno-tree-switch-conversion,) -CFLAGS32SEG := $(CFLAGSSEG) -DMODE16=0 -fomit-frame-pointer -CFLAGS16INC := $(CFLAGSSEG) -DMODE16=1 \ +CFLAGS32SEG := $(CFLAGSSEG) -DMODE16=0 +CFLAGS16 := $(CFLAGSSEG) -DMODE16=1 \ $(call cc-option,$(CC),-m16,-Wa$(COMMA)src/code16gcc.s) \ $(call cc-option,$(CC),--param large-stack-frame=4,-fno-inline) -CFLAGS16 := $(CFLAGS16INC) -fomit-frame-pointer # Run with "make V=1" to see the actual compile commands ifdef V @@ -210,23 +209,25 @@ SRCVGA=src/output.c src/string.c src/hw/pci.c src/hw/serialio.c \ vgasrc/clext.c vgasrc/bochsvga.c vgasrc/geodevga.c \ src/fw/coreboot.c vgasrc/cbvga.c -CFLAGS16VGA = $(CFLAGS16INC) -Isrc - -$(OUT)vgaccode16.raw.s: $(OUT)autoconf.h $(patsubst %.c, $(OUT)%.o,$(SRCVGA)) ; $(call whole-compile, $(CFLAGS16VGA) -S, $(SRCVGA),$@) +ifeq "$(CONFIG_VGA_FIXUP_ASM)" "y" +$(OUT)vgaccode16.raw.s: $(OUT)autoconf.h $(patsubst %.c, $(OUT)%.o,$(SRCVGA)) ; $(call whole-compile, $(filter-out -fomit-frame-pointer,$(CFLAGS16)) -fno-omit-frame-pointer -S -Isrc, $(SRCVGA),$@) $(OUT)vgaccode16.o: $(OUT)vgaccode16.raw.s scripts/vgafixup.py @echo " Fixup VGA rom assembler" $(Q)$(PYTHON) ./scripts/vgafixup.py $< $(OUT)vgaccode16.s $(Q)$(AS) --32 src/code16gcc.s $(OUT)vgaccode16.s -o $@ +else +$(OUT)vgaccode16.o: $(OUT)autoconf.h $(patsubst %.c, $(OUT)%.o,$(SRCVGA)) ; $(call whole-compile, $(CFLAGS16) -Isrc, $(SRCVGA),$@) +endif $(OUT)vgaentry.o: vgasrc/vgaentry.S $(OUT)autoconf.h $(OUT)asm-offsets.h @echo " Compiling (16bit) $@" - $(Q)$(CC) $(CFLAGS16VGA) -c -D__ASSEMBLY__ $< -o $@ + $(Q)$(CC) $(CFLAGS16) -c -D__ASSEMBLY__ $< -o $@ $(OUT)vgarom.o: $(OUT)vgaccode16.o $(OUT)vgaentry.o $(OUT)vgasrc/vgalayout.lds scripts/buildversion.sh @echo " Linking $@" $(Q)./scripts/buildversion.sh $(OUT)vgaversion.c VAR16 - $(Q)$(CC) $(CFLAGS16VGA) -c $(OUT)vgaversion.c -o $(OUT)vgaversion.o + $(Q)$(CC) $(CFLAGS16) -c $(OUT)vgaversion.c -o $(OUT)vgaversion.o $(Q)$(LD) --gc-sections -T $(OUT)vgasrc/vgalayout.lds $(OUT)vgaccode16.o $(OUT)vgaentry.o $(OUT)vgaversion.o -o $@ $(OUT)vgabios.bin.raw: $(OUT)vgarom.o |