From ebd0e151149a6280ea9f4cd9638aea517bb3238b Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Sat, 24 Mar 2018 17:15:03 +0800 Subject: target/hppa: Include priv level in user-only iaoq A recent glibc change relies on the fact that the iaoq must be 3, and computes an address based on that. QEMU had been ignoring the priv level for user-only, which produced an incorrect address. Reported-by: John David Anglin Signed-off-by: Richard Henderson --- target/hppa/translate.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) (limited to 'target/hppa/translate.c') diff --git a/target/hppa/translate.c b/target/hppa/translate.c index 6499b392f9..c532889b1f 100644 --- a/target/hppa/translate.c +++ b/target/hppa/translate.c @@ -1909,9 +1909,6 @@ static DisasJumpType do_ibranch(DisasContext *ctx, TCGv_reg dest, */ static TCGv_reg do_ibranch_priv(DisasContext *ctx, TCGv_reg offset) { -#ifdef CONFIG_USER_ONLY - return offset; -#else TCGv_reg dest; switch (ctx->privilege) { case 0: @@ -1931,7 +1928,6 @@ static TCGv_reg do_ibranch_priv(DisasContext *ctx, TCGv_reg offset) break; } return dest; -#endif } #ifdef CONFIG_USER_ONLY @@ -1967,7 +1963,7 @@ static DisasJumpType do_page_zero(DisasContext *ctx) goto do_sigill; } - switch (ctx->iaoq_f) { + switch (ctx->iaoq_f & -4) { case 0x00: /* Null pointer call */ gen_excp_1(EXCP_IMP); return DISAS_NORETURN; @@ -1978,7 +1974,7 @@ static DisasJumpType do_page_zero(DisasContext *ctx) case 0xe0: /* SET_THREAD_POINTER */ tcg_gen_st_reg(cpu_gr[26], cpu_env, offsetof(CPUHPPAState, cr[27])); - tcg_gen_mov_reg(cpu_iaoq_f, cpu_gr[31]); + tcg_gen_ori_reg(cpu_iaoq_f, cpu_gr[31], 3); tcg_gen_addi_reg(cpu_iaoq_b, cpu_iaoq_f, 4); return DISAS_IAQ_N_UPDATED; @@ -4697,8 +4693,8 @@ static int hppa_tr_init_disas_context(DisasContextBase *dcbase, #ifdef CONFIG_USER_ONLY ctx->privilege = MMU_USER_IDX; ctx->mmu_idx = MMU_USER_IDX; - ctx->iaoq_f = ctx->base.pc_first; - ctx->iaoq_b = ctx->base.tb->cs_base; + ctx->iaoq_f = ctx->base.pc_first | MMU_USER_IDX; + ctx->iaoq_b = ctx->base.tb->cs_base | MMU_USER_IDX; #else ctx->privilege = (ctx->tb_flags >> TB_FLAG_PRIV_SHIFT) & 3; ctx->mmu_idx = (ctx->tb_flags & PSW_D ? ctx->privilege : MMU_PHYS_IDX); -- cgit v1.2.1