diff options
Diffstat (limited to 'REORG.TODO/sysdeps/i386/Makefile')
| -rw-r--r-- | REORG.TODO/sysdeps/i386/Makefile | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/i386/Makefile b/REORG.TODO/sysdeps/i386/Makefile new file mode 100644 index 0000000000..e30e1339f0 --- /dev/null +++ b/REORG.TODO/sysdeps/i386/Makefile @@ -0,0 +1,103 @@ +# The mpn functions need a #define for asm syntax flavor. +# Every i386 port in use uses gas syntax (I think). +asm-CPPFLAGS += -DGAS_SYNTAX + +# The i386 `long double' is a distinct type we support. +long-double-fcts = yes + +ifeq ($(subdir),string) +sysdep_routines += cacheinfo +endif + +ifeq ($(subdir),gmon) +sysdep_routines += i386-mcount +endif + +ifeq ($(subdir),elf) +CFLAGS-rtld.c += -Wno-uninitialized -Wno-unused +CFLAGS-dl-load.c += -Wno-unused +CFLAGS-dl-reloc.c += -Wno-unused +endif + +ifeq ($(subdir),debug) +CFLAGS-backtrace.c += -fexceptions +endif + +# Most of the glibc routines don't ever call user defined callbacks +# nor use any FPU or SSE* and as such don't need bigger %esp alignment +# than 4 bytes. +# Lots of routines in math will use FPU, so make math subdir an exception +# here. +# In gcc 4.6 (and maybe earlier?) giving -mpreferred-stack-boundary=2 is +# an error, so don't try to reduce it here like we used to. We still +# explicit set -mpreferred-stack-boundary=4 the places where it matters, +# in case an older compiler defaulted to 2. +ifeq ($(subdir),math) +sysdep-CFLAGS += -mpreferred-stack-boundary=4 +else +ifeq ($(subdir),csu) +sysdep-CFLAGS += -mpreferred-stack-boundary=4 +gen-as-const-headers += link-defines.sym +else +# Likewise, any function which calls user callbacks +uses-callbacks += -mpreferred-stack-boundary=4 +# Likewise, any stack alignment tests +stack-align-test-flags += -malign-double -mpreferred-stack-boundary=4 +endif +endif + +# And a couple of other routines +ifeq ($(subdir),stdlib) +CFLAGS-exit.c += -mpreferred-stack-boundary=4 +CFLAGS-cxa_finalize.c += -mpreferred-stack-boundary=4 +endif +ifeq ($(subdir),elf) +CFLAGS-dl-init.c += -mpreferred-stack-boundary=4 +CFLAGS-dl-fini.c += -mpreferred-stack-boundary=4 +CFLAGS-dl-open.c += -mpreferred-stack-boundary=4 +CFLAGS-dl-close.c += -mpreferred-stack-boundary=4 +CFLAGS-dl-error.c += -mpreferred-stack-boundary=4 +endif +ifeq ($(subdir),dlfcn) +CFLAGS-dlopen.c += -mpreferred-stack-boundary=4 +CFLAGS-dlopenold.c += -mpreferred-stack-boundary=4 +CFLAGS-dlclose.c += -mpreferred-stack-boundary=4 +CFLAGS-dlerror.c += -mpreferred-stack-boundary=4 +endif + +ifneq (,$(filter -mno-tls-direct-seg-refs,$(CFLAGS))) +defines += -DNO_TLS_DIRECT_SEG_REFS +endif + +ifeq ($(subdir),elf) +sysdep-dl-routines += tlsdesc dl-tlsdesc + +tests += tst-audit3 +modules-names += tst-auditmod3a tst-auditmod3b + +$(objpfx)tst-audit3: $(objpfx)tst-auditmod3a.so +$(objpfx)tst-audit3.out: $(objpfx)tst-auditmod3b.so +tst-audit3-ENV = LD_AUDIT=$(objpfx)tst-auditmod3b.so +endif + +ifeq ($(subdir),csu) +gen-as-const-headers += tlsdesc.sym +endif + +# Make sure no code in ld.so uses mm/xmm/ymm/zmm registers on i386 since +# the first 3 mm/xmm/ymm/zmm registers are used to pass vector parameters +# which must be preserved. +# With SSE disabled, ensure -fpmath is not set to use sse either. +rtld-CFLAGS += -mno-sse -mno-mmx -mfpmath=387 +ifeq ($(subdir),elf) +CFLAGS-.os += $(if $(filter $(@F),$(patsubst %,%.os,$(all-rtld-routines))),\ + $(rtld-CFLAGS)) + +tests-special += $(objpfx)tst-ld-sse-use.out +$(objpfx)tst-ld-sse-use.out: ../sysdeps/i386/tst-ld-sse-use.sh $(objpfx)ld.so + @echo "Checking ld.so for SSE register use. This will take a few seconds..." + $(BASH) $< $(objpfx) '$(NM)' '$(OBJDUMP)' '$(READELF)' > $@; \ + $(evaluate-test) +else +CFLAGS-.os += $(if $(filter rtld-%.os,$(@F)), $(rtld-CFLAGS)) +endif |