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hw/registerfields: Add FIELD_SEX<N> and FIELD_SDP<N>

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Add new macros to manipulate signed fields within the register.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220301215958.157011-2-richard.henderson@linaro.org
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2022-03-01 11:59:41 -10:00 • committed by Peter Maydell
parent 4c579e15bd
commit d5e51efb9f
1 changed files with 47 additions and 1 deletions
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46
include/hw/registerfields.h
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@ -59,6 +59,19 @@
extract64((storage), R_ ## reg ## _ ## field ## _SHIFT, \
R_ ## reg ## _ ## field ## _LENGTH)
#define FIELD_SEX8(storage, reg, field) \
sextract8((storage), R_ ## reg ## _ ## field ## _SHIFT, \
R_ ## reg ## _ ## field ## _LENGTH)
#define FIELD_SEX16(storage, reg, field) \
sextract16((storage), R_ ## reg ## _ ## field ## _SHIFT, \
R_ ## reg ## _ ## field ## _LENGTH)
#define FIELD_SEX32(storage, reg, field) \
sextract32((storage), R_ ## reg ## _ ## field ## _SHIFT, \
R_ ## reg ## _ ## field ## _LENGTH)
#define FIELD_SEX64(storage, reg, field) \
sextract64((storage), R_ ## reg ## _ ## field ## _SHIFT, \
R_ ## reg ## _ ## field ## _LENGTH)
/* Extract a field from an array of registers */
#define ARRAY_FIELD_EX32(regs, reg, field) \
FIELD_EX32((regs)[R_ ## reg], reg, field)
@ -102,6 +115,39 @@
R_ ## reg ## _ ## field ## _LENGTH, _v.v); \
_d; })
#define FIELD_SDP8(storage, reg, field, val) ({ \
struct { \
signed 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; })
#define FIELD_SDP16(storage, reg, field, val) ({ \
struct { \
signed 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; })
#define FIELD_SDP32(storage, reg, field, val) ({ \
struct { \
signed 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; })
#define FIELD_SDP64(storage, reg, field, val) ({ \
struct { \
int64_t 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; })
/* Deposit a field to array of registers. */
#define ARRAY_FIELD_DP32(regs, reg, field, val) \
(regs)[R_ ## reg] = FIELD_DP32((regs)[R_ ## reg], reg, field, val);