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target/hppa: Split PSW X and B into their own field

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Generally, both of these bits are cleared at the end of each
instruction.  By separating these, we will be able to clear
both with a single insn, instead of 2 or 3.

Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2024-04-16 20:23:16 -07:00
parent d2e22fde14
commit ebc9401a40
2 changed files with 5 additions and 4 deletions
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3
target/hppa/cpu.h
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@ -208,7 +208,8 @@ typedef struct CPUArchState {
uint64_t fr[32];
uint64_t sr[8]; /* stored shifted into place for gva */
target_ulong psw; /* All psw bits except the following: */
uint32_t psw; /* All psw bits except the following: */
uint32_t psw_xb; /* X and B, in their normal positions */
target_ulong psw_n; /* boolean */
target_long psw_v; /* in most significant bit */

6
target/hppa/helper.c
View File

@ -54,7 +54,7 @@ target_ulong cpu_hppa_get_psw(CPUHPPAState *env)
psw |= env->psw_n * PSW_N;
psw |= (env->psw_v < 0) * PSW_V;
psw |= env->psw;
psw |= env->psw | env->psw_xb;
return psw;
}
@ -76,8 +76,8 @@ void cpu_hppa_put_psw(CPUHPPAState *env, target_ulong psw)
}
psw &= ~reserved;
env->psw = psw & (uint32_t)~(PSW_N | PSW_V | PSW_CB);
env->psw = psw & (uint32_t)~(PSW_B | PSW_N | PSW_V | PSW_X | PSW_CB);
env->psw_xb = psw & (PSW_X | PSW_B);
env->psw_n = (psw / PSW_N) & 1;
env->psw_v = -((psw / PSW_V) & 1);