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target/alpha: Remove in_superpage 

The number of links across (normal) pages using this is low,
and it will shortly violate the contract for breakpoints.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
master
Richard Henderson 2021-06-20 15:44:28 -07:00
parent cba201f4c7
commit 3fd3442abe
1 changed files with 2 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
target/alpha/translate.c
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@ -438,24 +438,9 @@ static DisasJumpType gen_store_conditional(DisasContext *ctx, int ra, int rb,
return DISAS_NEXT;
}
static bool in_superpage(DisasContext *ctx, int64_t addr)
{
#ifndef CONFIG_USER_ONLY
return ((ctx->tbflags & ENV_FLAG_PS_USER) == 0
&& addr >> TARGET_VIRT_ADDR_SPACE_BITS == -1
&& ((addr >> 41) & 3) == 2);
#else
return false;
#endif
}
static bool use_goto_tb(DisasContext *ctx, uint64_t dest)
{
#ifndef CONFIG_USER_ONLY
/* If the destination is in the superpage, the page perms can't change. */
if (in_superpage(ctx, dest)) {
return true;
}
/* Check for the dest on the same page as the start of the TB. */
return ((ctx->base.tb->pc ^ dest) & TARGET_PAGE_MASK) == 0;
#else
@ -2990,7 +2975,7 @@ static void alpha_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cpu)
{
DisasContext *ctx = container_of(dcbase, DisasContext, base);
CPUAlphaState *env = cpu->env_ptr;
int64_t bound, mask;
int64_t bound;
ctx->tbflags = ctx->base.tb->flags;
ctx->mem_idx = cpu_mmu_index(env, false);
@ -3019,12 +3004,7 @@ static void alpha_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cpu)
ctx->lit = NULL;
/* Bound the number of insns to execute to those left on the page. */
if (in_superpage(ctx, ctx->base.pc_first)) {
mask = -1ULL << 41;
} else {
mask = TARGET_PAGE_MASK;
}
bound = -(ctx->base.pc_first | mask) / 4;
bound = -(ctx->base.pc_first | TARGET_PAGE_MASK) / 4;
ctx->base.max_insns = MIN(ctx->base.max_insns, bound);
}