| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | # The mpn functions need a #define for asm syntax flavor. |
| 2 | # Every i386 port in use uses gas syntax (I think). |
| 3 | asm-CPPFLAGS += -DGAS_SYNTAX |
| 4 | |
| 5 | # The i386 `long double' is a distinct type we support. |
| 6 | long-double-fcts = yes |
| 7 | |
| 8 | ifeq ($(subdir),string) |
| 9 | sysdep_routines += cacheinfo |
| 10 | endif |
| 11 | |
| 12 | ifeq ($(subdir),gmon) |
| 13 | sysdep_routines += i386-mcount |
| 14 | endif |
| 15 | |
| 16 | ifeq ($(subdir),elf) |
| 17 | CFLAGS-rtld.c += -Wno-uninitialized -Wno-unused |
| 18 | CFLAGS-dl-load.c += -Wno-unused |
| 19 | CFLAGS-dl-reloc.c += -Wno-unused |
| 20 | endif |
| 21 | |
| 22 | ifeq ($(subdir),debug) |
| 23 | CFLAGS-backtrace.c += -fexceptions |
| 24 | endif |
| 25 | |
| 26 | # Most of the glibc routines don't ever call user defined callbacks |
| 27 | # nor use any FPU or SSE* and as such don't need bigger %esp alignment |
| 28 | # than 4 bytes. |
| 29 | # Lots of routines in math will use FPU, so make math subdir an exception |
| 30 | # here. |
| 31 | # In gcc 4.6 (and maybe earlier?) giving -mpreferred-stack-boundary=2 is |
| 32 | # an error, so don't try to reduce it here like we used to. We still |
| 33 | # explicit set -mpreferred-stack-boundary=4 the places where it matters, |
| 34 | # in case an older compiler defaulted to 2. |
| 35 | ifeq ($(subdir),math) |
| 36 | sysdep-CFLAGS += -mpreferred-stack-boundary=4 |
| 37 | else |
| 38 | ifeq ($(subdir),csu) |
| 39 | sysdep-CFLAGS += -mpreferred-stack-boundary=4 |
| 40 | gen-as-const-headers += link-defines.sym |
| 41 | else |
| 42 | # Likewise, any function which calls user callbacks |
| 43 | uses-callbacks += -mpreferred-stack-boundary=4 |
| 44 | # Likewise, any stack alignment tests |
| 45 | stack-align-test-flags += -malign-double -mpreferred-stack-boundary=4 |
| 46 | endif |
| 47 | endif |
| 48 | |
| 49 | # And a couple of other routines |
| 50 | ifeq ($(subdir),stdlib) |
| 51 | CFLAGS-exit.c += -mpreferred-stack-boundary=4 |
| 52 | CFLAGS-cxa_finalize.c += -mpreferred-stack-boundary=4 |
| 53 | endif |
| 54 | ifeq ($(subdir),elf) |
| 55 | CFLAGS-dl-init.c += -mpreferred-stack-boundary=4 |
| 56 | CFLAGS-dl-fini.c += -mpreferred-stack-boundary=4 |
| 57 | CFLAGS-dl-open.c += -mpreferred-stack-boundary=4 |
| 58 | CFLAGS-dl-close.c += -mpreferred-stack-boundary=4 |
| 59 | CFLAGS-dl-error.c += -mpreferred-stack-boundary=4 |
| 60 | endif |
| 61 | ifeq ($(subdir),dlfcn) |
| 62 | CFLAGS-dlopen.c += -mpreferred-stack-boundary=4 |
| 63 | CFLAGS-dlopenold.c += -mpreferred-stack-boundary=4 |
| 64 | CFLAGS-dlclose.c += -mpreferred-stack-boundary=4 |
| 65 | CFLAGS-dlerror.c += -mpreferred-stack-boundary=4 |
| 66 | endif |
| 67 | |
| 68 | ifneq (,$(filter -mno-tls-direct-seg-refs,$(CFLAGS))) |
| 69 | defines += -DNO_TLS_DIRECT_SEG_REFS |
| 70 | endif |
| 71 | |
| 72 | ifeq ($(subdir),elf) |
| 73 | sysdep-dl-routines += tlsdesc dl-tlsdesc |
| 74 | |
| 75 | tests += tst-audit3 |
| 76 | modules-names += tst-auditmod3a tst-auditmod3b |
| 77 | |
| 78 | $(objpfx)tst-audit3: $(objpfx)tst-auditmod3a.so |
| 79 | $(objpfx)tst-audit3.out: $(objpfx)tst-auditmod3b.so |
| 80 | tst-audit3-ENV = LD_AUDIT=$(objpfx)tst-auditmod3b.so |
| 81 | endif |
| 82 | |
| 83 | ifeq ($(subdir),csu) |
| 84 | gen-as-const-headers += tlsdesc.sym |
| 85 | endif |
| 86 | |
| 87 | ifeq ($(subdir),elf) |
| 88 | # Make sure no code in ld.so uses mm/xmm/ymm/zmm registers on i386 since |
| 89 | # the first 3 mm/xmm/ymm/zmm registers are used to pass vector parameters |
| 90 | # which must be preserved. |
| 91 | CFLAGS-.os += $(if $(filter $(@F),$(patsubst %,%.os,$(all-rtld-routines))),\ |
| 92 | -mno-sse -mno-mmx) |
| 93 | |
| 94 | tests-special += $(objpfx)tst-ld-sse-use.out |
| 95 | $(objpfx)tst-ld-sse-use.out: ../sysdeps/i386/tst-ld-sse-use.sh $(objpfx)ld.so |
| 96 | @echo "Checking ld.so for SSE register use. This will take a few seconds..." |
| 97 | $(BASH) $< $(objpfx) '$(NM)' '$(OBJDUMP)' '$(READELF)' > $@; \ |
| 98 | $(evaluate-test) |
| 99 | endif |