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| author | Michael Brown | 2008-10-07 23:46:43 +0200 |
|---|---|---|
| committer | Michael Brown | 2008-10-07 23:46:43 +0200 |
| commit | f0b942ef42d542a3411545831ce81d5ba54b2de5 (patch) | |
| tree | 78e79d85289c8331d7a7136cc1bf48b1c6ca76ed /src/arch/i386/Makefile | |
| parent | [libc] Define wchar_t in a gcc-compatible way (diff) | |
| download | ipxe-f0b942ef42d542a3411545831ce81d5ba54b2de5.tar.gz ipxe-f0b942ef42d542a3411545831ce81d5ba54b2de5.tar.xz ipxe-f0b942ef42d542a3411545831ce81d5ba54b2de5.zip | |
[makefile] Kill off arch/$(ARCH)/Config
The arch/i386/Config file has long been marked as deprecated. Move all
the pertinent bits to arch/i386/Makefile instead and remove
arch/i386/Config.
Diffstat (limited to 'src/arch/i386/Makefile')
| -rw-r--r-- | src/arch/i386/Makefile | 61 |
1 files changed, 56 insertions, 5 deletions
diff --git a/src/arch/i386/Makefile b/src/arch/i386/Makefile index 97ca0774..c5d139e9 100644 --- a/src/arch/i386/Makefile +++ b/src/arch/i386/Makefile @@ -1,3 +1,59 @@ +# Force i386-only instructions +# +CFLAGS += -march=i386 + +# Code size reduction. +# +CFLAGS += -fstrength-reduce -fomit-frame-pointer + +# Code size reduction. gcc3 needs a different syntax to gcc2 if you +# want to avoid spurious warnings. +# +GCC_VERSION := $(subst ., ,$(shell $(CC) -dumpversion)) +GCC_MAJOR := $(firstword $(GCC_VERSION)) +ifeq ($(GCC_MAJOR),2) +CFLAGS += -malign-jumps=1 -malign-loops=1 -malign-functions=1 +else +CFLAGS += -falign-jumps=1 -falign-loops=1 -falign-functions=1 +endif + +# Code size reduction. This is almost always a win. The kernel uses it, too. +# +CFLAGS += -mpreferred-stack-boundary=2 + +# Code size reduction. Use regparm for all functions - C functions +# called from assembly (or vice versa) need __cdecl now +# +CFLAGS += -mregparm=3 + +# Code size reduction. Use -mrtd (same __cdecl requirements as above) +CFLAGS += -mrtd + +# Code size reduction. This is the logical complement to -mregparm=3. +# It doesn't currently buy us anything, but if anything ever tries to +# return small structures, let's be prepared +# +CFLAGS += -freg-struct-return + +# Stop ld from complaining about our customised linker script +# +LDFLAGS += -N --no-check-sections + +# Force 32-bit code even on an x86-64 machine +# +CFLAGS += -m32 +ASFLAGS += --32 +LDFLAGS += -m elf_i386 + +# EFI requires -fshort-wchar, and nothing else currently uses wchar_t +# +CFLAGS += -fshort-wchar + +# We need to undefine the default macro "i386" when compiling .S +# files, otherwise ".arch i386" translates to ".arch 1"... +# +CFLAGS += -Ui386 + # Locations of utilities # ISOLINUX_BIN = /usr/lib/syslinux/isolinux.bin @@ -25,11 +81,6 @@ NON_AUTO_SRCS += arch/i386/core/wince_loader.c OBJS_unnrv2b = unnrv2b unnrv2b16 CFLAGS_unnrv2b16 = -DCODE16 -# We need to undefine the default macro "i386" when compiling .S -# files, otherwise ".arch i386" translates to ".arch 1"... -# -CFLAGS_S += -Ui386 - # The i386 linker script # LDSCRIPT = arch/i386/scripts/i386.lds |