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Re: [PATCH] hw/registerfields: Prefix local variables with underscore in
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From: |
Alistair Francis |
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Subject: |
Re: [PATCH] hw/registerfields: Prefix local variables with underscore in macros |
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Date: |
Mon, 11 May 2020 09:39:18 -0700 |
On Sun, May 10, 2020 at 1:35 PM Philippe Mathieu-Daudé <address@hidden> wrote:
>
> One can name a local variable holding a value as 'v', but it
> currently clashes with the registerfields macros. To save others
> to debug the same mistake, prefix the macro's local variables
> with an underscore.
>
> Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
Reviewed-by: Alistair Francis <address@hidden>
Alistair
> ---
> include/hw/registerfields.h | 40 ++++++++++++++++++-------------------
> 1 file changed, 20 insertions(+), 20 deletions(-)
>
> diff --git a/include/hw/registerfields.h b/include/hw/registerfields.h
> index 0407edb7ec..93fa4a84c2 100644
> --- a/include/hw/registerfields.h
> +++ b/include/hw/registerfields.h
> @@ -66,35 +66,35 @@
> #define FIELD_DP8(storage, reg, field, val) ({ \
> struct { \
> unsigned int v:R_ ## reg ## _ ## field ## _LENGTH; \
> - } v = { .v = val }; \
> - uint8_t d; \
> - d = deposit32((storage), R_ ## reg ## _ ## field ## _SHIFT, \
> - R_ ## reg ## _ ## field ## _LENGTH, v.v); \
> - d; })
> + } _v = { .v = val }; \
> + uint8_t _d; \
> + _d = deposit32((storage), R_ ## reg ## _ ## field ## _SHIFT, \
> + R_ ## reg ## _ ## field ## _LENGTH, _v.v); \
> + _d; })
> #define FIELD_DP16(storage, reg, field, val) ({ \
> struct { \
> unsigned int v:R_ ## reg ## _ ## field ## _LENGTH; \
> - } v = { .v = val }; \
> - uint16_t d; \
> - d = deposit32((storage), R_ ## reg ## _ ## field ## _SHIFT, \
> - R_ ## reg ## _ ## field ## _LENGTH, v.v); \
> - d; })
> + } _v = { .v = val }; \
> + uint16_t _d; \
> + _d = deposit32((storage), R_ ## reg ## _ ## field ## _SHIFT, \
> + R_ ## reg ## _ ## field ## _LENGTH, _v.v); \
> + _d; })
> #define FIELD_DP32(storage, reg, field, val) ({ \
> struct { \
> unsigned int v:R_ ## reg ## _ ## field ## _LENGTH; \
> - } v = { .v = val }; \
> - uint32_t d; \
> - d = deposit32((storage), R_ ## reg ## _ ## field ## _SHIFT, \
> - R_ ## reg ## _ ## field ## _LENGTH, v.v); \
> - d; })
> + } _v = { .v = val }; \
> + uint32_t _d; \
> + _d = deposit32((storage), R_ ## reg ## _ ## field ## _SHIFT, \
> + R_ ## reg ## _ ## field ## _LENGTH, _v.v); \
> + _d; })
> #define FIELD_DP64(storage, reg, field, val) ({ \
> struct { \
> unsigned int v:R_ ## reg ## _ ## field ## _LENGTH; \
> - } v = { .v = val }; \
> - uint64_t d; \
> - d = deposit64((storage), R_ ## reg ## _ ## field ## _SHIFT, \
> - R_ ## reg ## _ ## field ## _LENGTH, v.v); \
> - d; })
> + } _v = { .v = val }; \
> + uint64_t _d; \
> + _d = deposit64((storage), R_ ## reg ## _ ## field ## _SHIFT, \
> + R_ ## reg ## _ ## field ## _LENGTH, _v.v); \
> + _d; })
>
> /* Deposit a field to array of registers. */
> #define ARRAY_FIELD_DP32(regs, reg, field, val) \
> --
> 2.21.3
>
>