| # Powerpc64 specific build options. |
| # this is ./sysdeps/powerpc/powerpc64/Makefile |
| |
| # Each TOC entry takes 8 bytes and the TOC holds up to 2^16 bytes, |
| # or 8192 entries. |
| # If -fpic is not specified, the latest gcc-3.2.1 now generates |
| # different code for call stubs (without the TOC reload). |
| # Shared objects need the TOC reload so specify -fpic. |
| ifeq (yes,$(build-shared)) |
| pic-ccflag = -fpic |
| endif |
| |
| ifeq ($(with-clang),no) |
| # These flags prevent FPU or Altivec registers from being used, |
| # for code called in contexts that is not allowed to touch those registers. |
| # Stupid GCC requires us to pass all these ridiculous switches. We need to |
| # pass the -mno-* switches as well to prevent the compiler from attempting |
| # to emit altivec or vsx instructions, especially when the registers aren't |
| # available. |
| no-special-regs := $(sort $(foreach n,40 41 50 51 60 61 62 63 \ |
| $(foreach m,2 3 4 5 6 7 8 9, \ |
| 3$m 4$m 5$m),\ |
| -ffixed-$n)) \ |
| $(sort $(foreach n,$(foreach m,0 1 2 3 4 5 6 7 8 9,\ |
| $m 1$m 2$m) 30 31,\ |
| -ffixed-v$n)) \ |
| -ffixed-vrsave -ffixed-vscr -mno-altivec -mno-vsx |
| |
| # Need to prevent gcc from using fprs in code used during dynamic linking. |
| |
| CFLAGS-dl-runtime.os = $(no-special-regs) |
| CFLAGS-dl-lookup.os = $(no-special-regs) |
| CFLAGS-dl-misc.os = $(no-special-regs) |
| CFLAGS-rtld-mempcpy.os = $(no-special-regs) |
| CFLAGS-rtld-memmove.os = $(no-special-regs) |
| CFLAGS-rtld-memchr.os = $(no-special-regs) |
| CFLAGS-rtld-strnlen.os = $(no-special-regs) |
| |
| ifeq ($(subdir),elf) |
| # help gcc inline asm code from dl-machine.h |
| +cflags += -finline-limit=2000 |
| endif |
| |
| endif # clang |
| |
| ifeq ($(subdir),gmon) |
| # The assembly functions assume that fp arg regs are not trashed. |
| # Compiling with -msoft-float ensures that fp regs are not used |
| # for moving memory around. |
| ifeq ($(with-clang),no) |
| CFLAGS-mcount.c += $(no-special-regs) |
| endif # clang |
| sysdep_routines += ppc-mcount |
| endif |