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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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6
arch/riscv/core/thread.c
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@ -57,7 +57,7 @@ void arch_new_thread(struct k_thread *thread, k_thread_stack_t *stack,
* thread stack.
*/
stack_init->mstatus = MSTATUS_DEF_RESTORE;
#if defined(CONFIG_FLOAT) && defined(CONFIG_FP_SHARING)
#if defined(CONFIG_FPU) && defined(CONFIG_FP_SHARING)
if ((thread->base.user_options & K_FP_REGS) != 0) {
stack_init->mstatus |= MSTATUS_FS_INIT;
}
@ -68,7 +68,7 @@ void arch_new_thread(struct k_thread *thread, k_thread_stack_t *stack,
thread->callee_saved.sp = (ulong_t)stack_init;
}
#if defined(CONFIG_FLOAT) && defined(CONFIG_FP_SHARING)
#if defined(CONFIG_FPU) && defined(CONFIG_FP_SHARING)
int arch_float_disable(struct k_thread *thread)
{
unsigned int key;
@ -131,4 +131,4 @@ int arch_float_enable(struct k_thread *thread)
return 0;
}
#endif /* CONFIG_FLOAT && CONFIG_FP_SHARING */
#endif /* CONFIG_FPU && CONFIG_FP_SHARING */