diff options
Diffstat (limited to 'config/target.in')
| -rw-r--r-- | config/target.in | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/config/target.in b/config/target.in index d38e4c1..b94db3c 100644 --- a/config/target.in +++ b/config/target.in @@ -15,6 +15,7 @@ config ARCH_SUPPORT_ABI config ARCH_SUPPORT_CPU config ARCH_SUPPORT_TUNE config ARCH_SUPPORT_FPU +config ARCH_SUPPORT_SOFTFP config ARCH_DEFAULT_HAS_MMU config ARCH_DEFAULT_BE @@ -144,6 +145,9 @@ config ARCH_SUPPORT_TUNE config ARCH_SUPPORT_FPU bool +config ARCH_SUPPORT_SOFTFP + bool + config ARCH_ARCH string prompt "Architecture level" @@ -271,6 +275,22 @@ config ARCH_FLOAT_SW If your processor has no FPU, then you most probably want this, as it is faster than emulating the FPU in the kernel. +config ARCH_FLOAT_SOFTFP + bool + prompt "softfp" + depends on ARCH_SUPPORT_SOFTFP + help + Emit hardware floating point opcodes but use the software + floating point calling convention. + + Architectures such as ARM use different registers for passing + floating point values depending on if they're in software mode + or hardware mode. softfp emits FPU instructions but uses the + software FP calling convention allowing softfp code to + interoperate with legacy software only code. + + If in doubt, use 'software' or 'hardware' mode instead. + endchoice config TARGET_CFLAGS @@ -300,6 +320,7 @@ config ARCH_FLOAT string default "hard" if ARCH_FLOAT_HW default "soft" if ARCH_FLOAT_SW + default "softfp" if ARCH_FLOAT_SOFTFP source "config.gen/arch.in.2" |