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author | Richard Henderson <richard.henderson@linaro.org> | 2023-10-27 04:10:45 -0700 |
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committer | Richard Henderson <richard.henderson@linaro.org> | 2023-11-06 18:49:34 -0800 |
commit | b10700d826c864872deae6c28aca041fc97df79f (patch) | |
tree | 919c22e43e88e94d017c139b83b027960dc926ca | |
parent | 8a02b9a68e4cded2b8751d803a3e3aedfce93609 (diff) | |
download | qemu-b10700d826c864872deae6c28aca041fc97df79f.zip qemu-b10700d826c864872deae6c28aca041fc97df79f.tar.gz qemu-b10700d826c864872deae6c28aca041fc97df79f.tar.bz2 |
target/hppa: Update IIAOQ, IIASQ for pa2.0
These registers have a different format for pa2.0.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
-rw-r--r-- | target/hppa/int_helper.c | 46 | ||||
-rw-r--r-- | target/hppa/sys_helper.c | 10 |
2 files changed, 38 insertions, 18 deletions
diff --git a/target/hppa/int_helper.c b/target/hppa/int_helper.c index a11d607..5487544 100644 --- a/target/hppa/int_helper.c +++ b/target/hppa/int_helper.c @@ -102,11 +102,7 @@ void hppa_cpu_do_interrupt(CPUState *cs) HPPACPU *cpu = HPPA_CPU(cs); CPUHPPAState *env = &cpu->env; int i = cs->exception_index; - target_ulong iaoq_f = env->iaoq_f; - target_ulong iaoq_b = env->iaoq_b; - uint64_t iasq_f = env->iasq_f; - uint64_t iasq_b = env->iasq_b; - target_ulong old_psw; + uint64_t old_psw; /* As documented in pa2.0 -- interruption handling. */ /* step 1 */ @@ -118,10 +114,25 @@ void hppa_cpu_do_interrupt(CPUState *cs) (i == EXCP_HPMC ? PSW_M : 0)); /* step 3 */ - env->cr[CR_IIASQ] = iasq_f >> 32; - env->cr_back[0] = iasq_b >> 32; - env->cr[CR_IIAOQ] = iaoq_f; - env->cr_back[1] = iaoq_b; + /* + * For pa1.x, IIASQ is simply a copy of IASQ. + * For pa2.0, IIASQ is the top bits of the virtual address, + * or zero if translation is disabled. + */ + if (!hppa_is_pa20(env)) { + env->cr[CR_IIASQ] = env->iasq_f >> 32; + env->cr_back[0] = env->iasq_b >> 32; + } else if (old_psw & PSW_C) { + env->cr[CR_IIASQ] = + hppa_form_gva_psw(old_psw, env->iasq_f, env->iaoq_f) >> 32; + env->cr_back[0] = + hppa_form_gva_psw(old_psw, env->iasq_f, env->iaoq_f) >> 32; + } else { + env->cr[CR_IIASQ] = 0; + env->cr_back[0] = 0; + } + env->cr[CR_IIAOQ] = env->iaoq_f; + env->cr_back[1] = env->iaoq_b; if (old_psw & PSW_Q) { /* step 5 */ @@ -154,14 +165,13 @@ void hppa_cpu_do_interrupt(CPUState *cs) /* ??? An alternate fool-proof method would be to store the instruction data into the unwind info. That's probably a bit too much in the way of extra storage required. */ - vaddr vaddr; - hwaddr paddr; + vaddr vaddr = env->iaoq_f & -4; + hwaddr paddr = vaddr; - paddr = vaddr = iaoq_f & -4; if (old_psw & PSW_C) { int prot, t; - vaddr = hppa_form_gva_psw(old_psw, iasq_f, vaddr); + vaddr = hppa_form_gva_psw(old_psw, env->iasq_f, vaddr); t = hppa_get_physical_address(env, vaddr, MMU_KERNEL_IDX, 0, &paddr, &prot, NULL); if (t >= 0) { @@ -191,14 +201,14 @@ void hppa_cpu_do_interrupt(CPUState *cs) /* step 7 */ if (i == EXCP_TOC) { - env->iaoq_f = FIRMWARE_START; + env->iaoq_f = hppa_form_gva(env, 0, FIRMWARE_START); /* help SeaBIOS and provide iaoq_b and iasq_back in shadow regs */ env->gr[24] = env->cr_back[0]; env->gr[25] = env->cr_back[1]; } else { - env->iaoq_f = env->cr[CR_IVA] + 32 * i; + env->iaoq_f = hppa_form_gva(env, 0, env->cr[CR_IVA] + 32 * i); } - env->iaoq_b = env->iaoq_f + 4; + env->iaoq_b = hppa_form_gva(env, 0, env->iaoq_f + 4); env->iasq_f = 0; env->iasq_b = 0; @@ -251,8 +261,8 @@ void hppa_cpu_do_interrupt(CPUState *cs) qemu_log("INT %6d: %s @ " TARGET_FMT_lx "," TARGET_FMT_lx " -> " TARGET_FMT_lx " " TARGET_FMT_lx "\n", ++count, name, - hppa_form_gva(env, iasq_f, iaoq_f), - hppa_form_gva(env, iasq_b, iaoq_b), + hppa_form_gva(env, env->iasq_f, env->iaoq_f), + hppa_form_gva(env, env->iasq_b, env->iaoq_b), env->iaoq_f, hppa_form_gva(env, (uint64_t)env->cr[CR_ISR] << 32, env->cr[CR_IOR])); diff --git a/target/hppa/sys_helper.c b/target/hppa/sys_helper.c index 8850576..a59245e 100644 --- a/target/hppa/sys_helper.c +++ b/target/hppa/sys_helper.c @@ -80,6 +80,16 @@ void HELPER(rfi)(CPUHPPAState *env) env->iasq_b = (uint64_t)env->cr_back[0] << 32; env->iaoq_f = env->cr[CR_IIAOQ]; env->iaoq_b = env->cr_back[1]; + + /* + * For pa2.0, IIASQ is the top bits of the virtual address. + * To recreate the space identifier, remove the offset bits. + */ + if (hppa_is_pa20(env)) { + env->iasq_f &= ~env->iaoq_f; + env->iasq_b &= ~env->iaoq_b; + } + cpu_hppa_put_psw(env, env->cr[CR_IPSW]); } |