[Buildroot] [git commit branch/next] arch/csky: specify BR2_GCC_TARGET_FLOAT_ABI

Thomas Petazzoni thomas.petazzoni at bootlin.com
Fri May 31 20:59:57 UTC 2019


commit: https://git.buildroot.net/buildroot/commit/?id=a9b722732d5fcb2fc3f16c09bf869112b3f64fbf
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/next

The C-SKY architecture uses two different ABIs, depending on the core
being used:

 - "abiv1" is a mcore based ISA with ELF_NUM:39 and does not support
   FPU & VDSP. It is used only for the ck610 core.

 - "abiv2" is C-SKY's own ISA with ELF_NUM:252 and supports FPU &
   VDSP. It is used for the ck807, ck810, ck860 cores.

Since "abiv1" does not support FPU, BR2_GCC_TARGET_FLOAT_ABI will
always have the value "soft" for the ck610 core.

Signed-off-by: Guo Ren <ren_guo at c-sky.com>
Cc: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
[Thomas: rework commit log]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
---
 arch/Config.in.csky | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/Config.in.csky b/arch/Config.in.csky
index 1aede81282..ebde7fe476 100644
--- a/arch/Config.in.csky
+++ b/arch/Config.in.csky
@@ -27,6 +27,10 @@ config BR2_CSKY_VDSP
 	bool "Enable VDSP enhanced instructions Co-processor"
 	depends on BR2_CSKY_FPU
 
+config BR2_GCC_TARGET_FLOAT_ABI
+	default "soft"		if !BR2_CSKY_FPU
+	default "hard"		if BR2_CSKY_FPU
+
 config BR2_ARCH
 	default "csky"
 


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