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| author | Richard Henderson <richard.henderson@linaro.org> | 2024-04-05 17:31:05 -1000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2024-04-09 07:43:31 -1000 |
| commit | 7d95db5e78a24d3315e3112d26909a7262355cb7 (patch) | |
| tree | 7e3bea464f416c5664d361bb79e73137c65be151 | |
| parent | b0f2f2976b4db05351117b0440b32bf0aac2c5c6 (diff) | |
| download | focaccia-qemu-7d95db5e78a24d3315e3112d26909a7262355cb7.tar.gz focaccia-qemu-7d95db5e78a24d3315e3112d26909a7262355cb7.zip | |
target/sh4: Merge mach and macl into a union
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>
| -rw-r--r-- | target/sh4/cpu.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/target/sh4/cpu.h b/target/sh4/cpu.h index 9211da6bde..d928bcf006 100644 --- a/target/sh4/cpu.h +++ b/target/sh4/cpu.h @@ -155,12 +155,22 @@ typedef struct CPUArchState { uint32_t pc; /* program counter */ uint32_t delayed_pc; /* target 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 fpscr; /* floating point status/control 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_status fp_status; |