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target/sh4: Merge mach and macl into a union

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Allow host access to the entire 64-bit accumulator.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson
2024-04-05 17:31:05 -10:00
parent b0f2f2976b
commit 7d95db5e78
1 changed files with 12 additions and 2 deletions
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14
target/sh4/cpu.h
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@ -155,12 +155,22 @@ typedef struct CPUArchState {
uint32_t pc; /* program counter */ uint32_t pc; /* program counter */
uint32_t delayed_pc; /* target of delayed branch */ uint32_t delayed_pc; /* target of delayed branch */
uint32_t delayed_cond; /* condition of delayed branch */ uint32_t delayed_cond; /* condition of delayed branch */
uint32_t mach; /* multiply and accumulate high */
uint32_t macl; /* multiply and accumulate low */
uint32_t pr; /* procedure register */ uint32_t pr; /* procedure register */
uint32_t fpscr; /* floating point status/control register */ uint32_t fpscr; /* floating point status/control register */
uint32_t fpul; /* floating point communication register */ uint32_t fpul; /* floating point communication register */
/* multiply and accumulate: high, low and combined. */
union {
uint64_t mac;
struct {
#if HOST_BIG_ENDIAN
uint32_t mach, macl;
#else
uint32_t macl, mach;
#endif
};
};
/* float point status register */ /* float point status register */
float_status fp_status; float_status fp_status;