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target-alpha: Reduce internal processor registers for user-mode.

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The existing set of IPRs is totally irrelevant to user-mode emulation.
Indeed, they most are irrelevant to implementing kernel-mode emulation,
and would only be relevant to PAL-mode emulation, which I suspect that
no one will ever attempt.

Reducing the set of processor registers reduces the size of the CPU state.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Richard Henderson 2010-01-04 11:19:14 -08:00 • committed by Aurelien Jarno
parent 8443effb50
commit dad081ee69
3 changed files with 34 additions and 21 deletions
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4
linux-user/main.c
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@ -3054,10 +3054,8 @@ int main(int argc, char **argv, char **envp)
for(i = 0; i < 28; i++) {
env->ir[i] = ((abi_ulong *)regs)[i];
}
env->ipr[IPR_USP] = regs->usp;
env->ir[30] = regs->usp;
env->ir[IR_SP] = regs->usp;
env->pc = regs->pc;
env->unique = regs->unique;
}
#elif defined(TARGET_CRIS)
{