| # 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 ($(subdir),elf) |
| CFLAGS-rtld.c += -Wno-uninitialized -Wno-unused |
| CFLAGS-dl-load.c += -Wno-unused |
| CFLAGS-dl-reloc.c += -Wno-unused |
| endif |
| |
| # Most of the glibc routines don't ever call user defined callbacks |
| # nor use any FPU or SSE* and as such don't need bigger %esp alignment |
| # than 4 bytes. |
| # Lots of routines in math will use FPU, so make math subdir an exception |
| # here. |
| # In gcc 4.6 (and maybe earlier?) giving -mpreferred-stack-boundary=2 is |
| # an error, so don't try to reduce it here like we used to. We still |
| # explicit set -mpreferred-stack-boundary=4 the places where it matters, |
| # in case an older compiler defaulted to 2. |
| ifeq ($(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 |
