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target/hppa: Add unwind_breg to CPUHPPAState

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Fill in the insn_start value during form_gva, and copy
it out to the env field in hppa_restore_state_to_opc.
The value is not yet consumed.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-10-27 02:46:44 -07:00
parent 4c34bab0d3
commit f5b5c85760
3 changed files with 20 additions and 2 deletions
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1
target/hppa/cpu.c
View file

@ -80,6 +80,7 @@ static void hppa_restore_state_to_opc(CPUState *cs,
if (data[1] != (target_ulong)-1) {
cpu->env.iaoq_b = data[1];
}
cpu->env.unwind_breg = data[2];
/*
* Since we were executing the instruction at IAOQ_F, and took some
* sort of action that provoked the cpu_restore_state, we can infer

8
target/hppa/cpu.h
View file

@ -45,7 +45,7 @@
#define MMU_IDX_TO_P(MIDX) (((MIDX) - MMU_KERNEL_IDX) & 1)
#define PRIV_P_TO_MMU_IDX(PRIV, P) ((PRIV) * 2 + !!(P) + MMU_KERNEL_IDX)
#define TARGET_INSN_START_EXTRA_WORDS 1
#define TARGET_INSN_START_EXTRA_WORDS 2
/* No need to flush MMU_PHYS_IDX */
#define HPPA_MMU_FLUSH_MASK \
@ -208,6 +208,12 @@ typedef struct CPUArchState {
target_ulong cr_back[2]; /* back of cr17/cr18 */
target_ulong shadow[7]; /* shadow registers */
/*
* During unwind of a memory insn, the base register of the address.
* This is used to construct CR_IOR for pa2.0.
*/
uint32_t unwind_breg;
/*
* ??? The number of entries isn't specified by the architecture.
* BTLBs are not supported in 64-bit machines.

13
target/hppa/translate.c
View file

@ -44,6 +44,7 @@ typedef struct DisasCond {
typedef struct DisasContext {
DisasContextBase base;
CPUState *cs;
TCGOp *insn_start;
uint64_t iaoq_f;
uint64_t iaoq_b;
@ -234,6 +235,13 @@ void hppa_translate_init(void)
"iasq_b");
}
static void set_insn_breg(DisasContext *ctx, int breg)
{
assert(ctx->insn_start != NULL);
tcg_set_insn_start_param(ctx->insn_start, 2, breg);
ctx->insn_start = NULL;
}
static DisasCond cond_make_f(void)
{
return (DisasCond){
@ -1324,6 +1332,8 @@ static void form_gva(DisasContext *ctx, TCGv_i64 *pgva, TCGv_i64 *pofs,
TCGv_i64 ofs;
TCGv_i64 addr;
set_insn_breg(ctx, rb);
/* Note that RX is mutually exclusive with DISP. */
if (rx) {
ofs = tcg_temp_new_i64();
@ -4458,7 +4468,8 @@ static void hppa_tr_insn_start(DisasContextBase *dcbase, CPUState *cs)
{
DisasContext *ctx = container_of(dcbase, DisasContext, base);
tcg_gen_insn_start(ctx->iaoq_f, ctx->iaoq_b);
tcg_gen_insn_start(ctx->iaoq_f, ctx->iaoq_b, 0);
ctx->insn_start = tcg_last_op();
}
static void hppa_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)