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kconfig: Rename CONFIG_FLOAT to CONFIG_FPU

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This commit renames the Kconfig `FLOAT` symbol to `FPU`, since this
symbol only indicates that the hardware Floating Point Unit (FPU) is
used and does not imply and/or indicate the general availability of
toolchain-level floating point support (i.e. this symbol is not
selected when building for an FPU-less platform that supports floating
point operations through the toolchain-provided software floating point
library).

Moreover, given that the symbol that indicates the availability of FPU
is named `CPU_HAS_FPU`, it only makes sense to use "FPU" in the name of
the symbol that enables the FPU.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
This commit is contained in:
Stephanos Ioannidis 2020-04-23 17:27:24 +09:00 • committed by Carles Cufí
commit 0e6ede8929
56 changed files with 114 additions and 115 deletions
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2
include/arch/arm/aarch32/arch.h
View file

@ -129,7 +129,7 @@ extern "C" {
* upon exception entry. Therefore, a wide guard region is required to
* guarantee that stack-overflow detection will always be successful.
*/
#if defined(CONFIG_FLOAT) && defined(CONFIG_FP_SHARING) \
#if defined(CONFIG_FPU) && defined(CONFIG_FP_SHARING) \
&& defined(CONFIG_MPU_STACK_GUARD)
#define MPU_GUARD_ALIGN_AND_SIZE_FLOAT CONFIG_MPU_STACK_GUARD_MIN_SIZE_FLOAT
#else

2
include/arch/arm/aarch32/exc.h
View file

@ -84,7 +84,7 @@ struct __esf {
sys_define_gpr_with_alias(pc, r15);
u32_t xpsr;
} basic;
#if defined(CONFIG_FLOAT) && defined(CONFIG_FP_SHARING)
#if defined(CONFIG_FPU) && defined(CONFIG_FP_SHARING)
float s[16];
u32_t fpscr;
u32_t undefined;

4
include/arch/arm/aarch32/thread.h
View file

@ -36,7 +36,7 @@ struct _callee_saved {
typedef struct _callee_saved _callee_saved_t;
#if defined(CONFIG_FLOAT) && defined(CONFIG_FP_SHARING)
#if defined(CONFIG_FPU) && defined(CONFIG_FP_SHARING)
struct _preempt_float {
float s16;
float s17;
@ -65,7 +65,7 @@ struct _thread_arch {
/* r0 in stack frame cannot be written to reliably */
u32_t swap_return_value;
#if defined(CONFIG_FLOAT) && defined(CONFIG_FP_SHARING)
#if defined(CONFIG_FPU) && defined(CONFIG_FP_SHARING)
/*
* No cooperative floating point register set structure exists for
* the Cortex-M as it automatically saves the necessary registers

4
include/arch/riscv/exp.h
View file

@ -41,7 +41,7 @@ struct soc_esf {
};
#endif
#if !defined(RV_FP_TYPE) && defined(CONFIG_FLOAT) && defined(CONFIG_FP_SHARING)
#if !defined(RV_FP_TYPE) && defined(CONFIG_FPU) && defined(CONFIG_FP_SHARING)
#ifdef CONFIG_CPU_HAS_FPU_DOUBLE_PRECISION
#define RV_FP_TYPE u64_t
#else
@ -74,7 +74,7 @@ struct __esf {
ulong_t mepc; /* machine exception program counter */
ulong_t mstatus; /* machine status register */
#if defined(CONFIG_FLOAT) && defined(CONFIG_FP_SHARING)
#if defined(CONFIG_FPU) && defined(CONFIG_FP_SHARING)
ulong_t fp_state; /* Floating-point saved context state. */
RV_FP_TYPE ft0; /* Caller-saved temporary floating register */
RV_FP_TYPE ft1; /* Caller-saved temporary floating register */

4
include/arch/riscv/thread.h
View file

@ -22,7 +22,7 @@
#ifndef _ASMLANGUAGE
#include <zephyr/types.h>
#if !defined(RV_FP_TYPE) && defined(CONFIG_FLOAT) && defined(CONFIG_FP_SHARING)
#if !defined(RV_FP_TYPE) && defined(CONFIG_FPU) && defined(CONFIG_FP_SHARING)
#ifdef CONFIG_CPU_HAS_FPU_DOUBLE_PRECISION
#define RV_FP_TYPE u64_t
#else
@ -50,7 +50,7 @@ struct _callee_saved {
ulong_t s10; /* saved register */
ulong_t s11; /* saved register */
#if defined(CONFIG_FLOAT) && defined(CONFIG_FP_SHARING)
#if defined(CONFIG_FPU) && defined(CONFIG_FP_SHARING)
u32_t fcsr; /* Control and status register */
RV_FP_TYPE fs0; /* saved floating-point register */
RV_FP_TYPE fs1; /* saved floating-point register */