Without -msoft-float the compiler would be allowed to use certain floating-point instructions (VFP/NEON) e.g. for optimizations, which would require additional code, for example to save contexts for interrupts. Add a comment which describes this in short words.
Signed-off-by: Alexander Holler <hol...@ahsoftware.de> --- arch/arm/cpu/arm1136/config.mk | 2 ++ arch/arm/cpu/arm1176/config.mk | 2 ++ arch/arm/cpu/arm1176/s3c64xx/config.mk | 2 ++ arch/arm/cpu/arm720t/config.mk | 1 + arch/arm/cpu/arm920t/config.mk | 1 + arch/arm/cpu/arm925t/config.mk | 1 + arch/arm/cpu/arm926ejs/config.mk | 1 + arch/arm/cpu/arm926ejs/davinci/config.mk | 1 + arch/arm/cpu/arm946es/config.mk | 1 + arch/arm/cpu/arm_intcm/config.mk | 1 + arch/arm/cpu/armv7/config.mk | 2 ++ arch/arm/cpu/armv7/omap-common/config.mk | 2 ++ arch/arm/cpu/ixp/config.mk | 1 + arch/arm/cpu/lh7a40x/config.mk | 1 + arch/arm/cpu/pxa/config.mk | 1 + arch/arm/cpu/s3c44b0/config.mk | 1 + arch/arm/cpu/sa1100/config.mk | 1 + 17 files changed, 22 insertions(+), 0 deletions(-) diff --git a/arch/arm/cpu/arm1136/config.mk b/arch/arm/cpu/arm1136/config.mk index 3e68535..e2c32c0 100644 --- a/arch/arm/cpu/arm1136/config.mk +++ b/arch/arm/cpu/arm1136/config.mk @@ -20,6 +20,8 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # + +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float # Make ARMv5 to allow more compilers to work, even though its v6. diff --git a/arch/arm/cpu/arm1176/config.mk b/arch/arm/cpu/arm1176/config.mk index 14346cf..a9a36b4 100644 --- a/arch/arm/cpu/arm1176/config.mk +++ b/arch/arm/cpu/arm1176/config.mk @@ -20,6 +20,8 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # + +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float # Make ARMv5 to allow more compilers to work, even though its v6. diff --git a/arch/arm/cpu/arm1176/s3c64xx/config.mk b/arch/arm/cpu/arm1176/s3c64xx/config.mk index 14346cf..a9a36b4 100644 --- a/arch/arm/cpu/arm1176/s3c64xx/config.mk +++ b/arch/arm/cpu/arm1176/s3c64xx/config.mk @@ -20,6 +20,8 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # + +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float # Make ARMv5 to allow more compilers to work, even though its v6. diff --git a/arch/arm/cpu/arm720t/config.mk b/arch/arm/cpu/arm720t/config.mk index 3844c62..1d59f60 100644 --- a/arch/arm/cpu/arm720t/config.mk +++ b/arch/arm/cpu/arm720t/config.mk @@ -22,6 +22,7 @@ # MA 02111-1307 USA # +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float PLATFORM_CPPFLAGS += -march=armv4 -mtune=arm7tdmi diff --git a/arch/arm/cpu/arm920t/config.mk b/arch/arm/cpu/arm920t/config.mk index 8f6c1a3..b595088 100644 --- a/arch/arm/cpu/arm920t/config.mk +++ b/arch/arm/cpu/arm920t/config.mk @@ -21,6 +21,7 @@ # MA 02111-1307 USA # +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float PLATFORM_CPPFLAGS += -march=armv4 diff --git a/arch/arm/cpu/arm925t/config.mk b/arch/arm/cpu/arm925t/config.mk index 8f6c1a3..b595088 100644 --- a/arch/arm/cpu/arm925t/config.mk +++ b/arch/arm/cpu/arm925t/config.mk @@ -21,6 +21,7 @@ # MA 02111-1307 USA # +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float PLATFORM_CPPFLAGS += -march=armv4 diff --git a/arch/arm/cpu/arm926ejs/config.mk b/arch/arm/cpu/arm926ejs/config.mk index f8ef90f..fb83862 100644 --- a/arch/arm/cpu/arm926ejs/config.mk +++ b/arch/arm/cpu/arm926ejs/config.mk @@ -21,6 +21,7 @@ # MA 02111-1307 USA # +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float PLATFORM_CPPFLAGS += -march=armv5te diff --git a/arch/arm/cpu/arm926ejs/davinci/config.mk b/arch/arm/cpu/arm926ejs/davinci/config.mk index 565adda..081c13d 100644 --- a/arch/arm/cpu/arm926ejs/davinci/config.mk +++ b/arch/arm/cpu/arm926ejs/davinci/config.mk @@ -21,6 +21,7 @@ # MA 02111-1307 USA # +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float PLATFORM_CPPFLAGS += -march=armv5te diff --git a/arch/arm/cpu/arm946es/config.mk b/arch/arm/cpu/arm946es/config.mk index e783f69..f7db925 100644 --- a/arch/arm/cpu/arm946es/config.mk +++ b/arch/arm/cpu/arm946es/config.mk @@ -21,6 +21,7 @@ # MA 02111-1307 USA # +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float PLATFORM_CPPFLAGS += -march=armv4 diff --git a/arch/arm/cpu/arm_intcm/config.mk b/arch/arm/cpu/arm_intcm/config.mk index e783f69..f7db925 100644 --- a/arch/arm/cpu/arm_intcm/config.mk +++ b/arch/arm/cpu/arm_intcm/config.mk @@ -21,6 +21,7 @@ # MA 02111-1307 USA # +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float PLATFORM_CPPFLAGS += -march=armv4 diff --git a/arch/arm/cpu/armv7/config.mk b/arch/arm/cpu/armv7/config.mk index 49ac9c7..03ec32b 100644 --- a/arch/arm/cpu/armv7/config.mk +++ b/arch/arm/cpu/armv7/config.mk @@ -20,6 +20,8 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # + +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float # Make ARMv5 to allow more compilers to work, even though its v7a. diff --git a/arch/arm/cpu/armv7/omap-common/config.mk b/arch/arm/cpu/armv7/omap-common/config.mk index 49ac9c7..03ec32b 100644 --- a/arch/arm/cpu/armv7/omap-common/config.mk +++ b/arch/arm/cpu/armv7/omap-common/config.mk @@ -20,6 +20,8 @@ # Foundation, Inc., 59 Temple Place, Suite 330, Boston, # MA 02111-1307 USA # + +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float # Make ARMv5 to allow more compilers to work, even though its v7a. diff --git a/arch/arm/cpu/ixp/config.mk b/arch/arm/cpu/ixp/config.mk index deca3f4..9634615 100644 --- a/arch/arm/cpu/ixp/config.mk +++ b/arch/arm/cpu/ixp/config.mk @@ -24,6 +24,7 @@ BIG_ENDIAN = y +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float -mbig-endian PLATFORM_CPPFLAGS += -mbig-endian -march=armv5te -mtune=strongarm1100 diff --git a/arch/arm/cpu/lh7a40x/config.mk b/arch/arm/cpu/lh7a40x/config.mk index 47b2b7b..6c4fa54 100644 --- a/arch/arm/cpu/lh7a40x/config.mk +++ b/arch/arm/cpu/lh7a40x/config.mk @@ -21,6 +21,7 @@ # MA 02111-1307 USA # +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float PLATFORM_CPPFLAGS += -march=armv4 diff --git a/arch/arm/cpu/pxa/config.mk b/arch/arm/cpu/pxa/config.mk index a05d69c..45405d6 100644 --- a/arch/arm/cpu/pxa/config.mk +++ b/arch/arm/cpu/pxa/config.mk @@ -22,6 +22,7 @@ # MA 02111-1307 USA # +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float PLATFORM_CPPFLAGS += -march=armv5te -mtune=xscale diff --git a/arch/arm/cpu/s3c44b0/config.mk b/arch/arm/cpu/s3c44b0/config.mk index 7454d72..6a374a7 100644 --- a/arch/arm/cpu/s3c44b0/config.mk +++ b/arch/arm/cpu/s3c44b0/config.mk @@ -22,6 +22,7 @@ # MA 02111-1307 USA # +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float PLATFORM_CPPFLAGS += -march=armv4 -mtune=arm7tdmi -msoft-float diff --git a/arch/arm/cpu/sa1100/config.mk b/arch/arm/cpu/sa1100/config.mk index 6f21f41..e52e8b0 100644 --- a/arch/arm/cpu/sa1100/config.mk +++ b/arch/arm/cpu/sa1100/config.mk @@ -22,6 +22,7 @@ # MA 02111-1307 USA # +# -msoft-float forces the compiler to not use any fp-related instructions. PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float PLATFORM_CPPFLAGS += -march=armv4 -mtune=strongarm1100 -- 1.7.3.4 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
