From 5f1fffa0a6575cfb39834d36c52e973a95dfb275 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alex=20Benn=C3=A9e?= Date: Wed, 28 Apr 2021 14:13:16 +0100 Subject: [PATCH 01/26] docs: fix link in sbsa description MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit A trailing _ makes all the difference to the rendered link. Signed-off-by: Alex Bennée Message-id: 20210428131316.31390-1-alex.bennee@linaro.org Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- docs/system/arm/sbsa.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/docs/system/arm/sbsa.rst b/docs/system/arm/sbsa.rst index b8ecfdb62f..27b0999aac 100644 --- a/docs/system/arm/sbsa.rst +++ b/docs/system/arm/sbsa.rst @@ -4,7 +4,7 @@ Arm Server Base System Architecture Reference board (``sbsa-ref``) While the `virt` board is a generic board platform that doesn't match any real hardware the `sbsa-ref` board intends to look like real hardware. The `Server Base System Architecture -` defines a +`_ defines a minimum base line of hardware support and importantly how the firmware reports that to any operating system. It is a static system that reports a very minimal DT to the firmware for non-discoverable From 68948d18224b93361e2880e2946ab268d0c650d7 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Tue, 27 Apr 2021 14:41:08 -0700 Subject: [PATCH 02/26] linux-user/aarch64: Enable hwcap for RND, BTI, and MTE These three features are already enabled by TCG, but are missing their hwcap bits. Update HWCAP2 from linux v5.12. Cc: qemu-stable@nongnu.org (for 6.0.1) Buglink: https://bugs.launchpad.net/bugs/1926044 Signed-off-by: Richard Henderson Message-id: 20210427214108.88503-1-richard.henderson@linaro.org Signed-off-by: Peter Maydell --- linux-user/elfload.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index c6731013fd..fc9c4f12be 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -586,6 +586,16 @@ enum { ARM_HWCAP2_A64_SVESM4 = 1 << 6, ARM_HWCAP2_A64_FLAGM2 = 1 << 7, ARM_HWCAP2_A64_FRINT = 1 << 8, + ARM_HWCAP2_A64_SVEI8MM = 1 << 9, + ARM_HWCAP2_A64_SVEF32MM = 1 << 10, + ARM_HWCAP2_A64_SVEF64MM = 1 << 11, + ARM_HWCAP2_A64_SVEBF16 = 1 << 12, + ARM_HWCAP2_A64_I8MM = 1 << 13, + ARM_HWCAP2_A64_BF16 = 1 << 14, + ARM_HWCAP2_A64_DGH = 1 << 15, + ARM_HWCAP2_A64_RNG = 1 << 16, + ARM_HWCAP2_A64_BTI = 1 << 17, + ARM_HWCAP2_A64_MTE = 1 << 18, }; #define ELF_HWCAP get_elf_hwcap() @@ -640,6 +650,9 @@ static uint32_t get_elf_hwcap2(void) GET_FEATURE_ID(aa64_dcpodp, ARM_HWCAP2_A64_DCPODP); GET_FEATURE_ID(aa64_condm_5, ARM_HWCAP2_A64_FLAGM2); GET_FEATURE_ID(aa64_frint, ARM_HWCAP2_A64_FRINT); + GET_FEATURE_ID(aa64_rndr, ARM_HWCAP2_A64_RNG); + GET_FEATURE_ID(aa64_bti, ARM_HWCAP2_A64_BTI); + GET_FEATURE_ID(aa64_mte, ARM_HWCAP2_A64_MTE); return hwcaps; } From eb849d8fd542329b299be5a894d7e272eed16a49 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Tue, 20 Apr 2021 13:31:06 +0100 Subject: [PATCH 03/26] target/arm: Fix tlbbits calculation in tlbi_aa64_vae2is_write() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In tlbi_aa64_vae2is_write() the calculation bits = tlbbits_for_regime(env, secure ? ARMMMUIdx_E2 : ARMMMUIdx_SE2, pageaddr) has the two arms of the ?: expression reversed. Fix the bug. Fixes: b6ad6062f1e5 Reported-by: Rebecca Cran Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Rémi Denis-Courmont Reviewed-by: Rebecca Cran Message-id: 20210420123106.10861-1-peter.maydell@linaro.org --- target/arm/helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index 9b1b98705f..3b365a78cb 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -4742,7 +4742,7 @@ static void tlbi_aa64_vae2is_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t pageaddr = sextract64(value << 12, 0, 56); bool secure = arm_is_secure_below_el3(env); int mask = secure ? ARMMMUIdxBit_SE2 : ARMMMUIdxBit_E2; - int bits = tlbbits_for_regime(env, secure ? ARMMMUIdx_E2 : ARMMMUIdx_SE2, + int bits = tlbbits_for_regime(env, secure ? ARMMMUIdx_SE2 : ARMMMUIdx_E2, pageaddr); tlb_flush_page_bits_by_mmuidx_all_cpus_synced(cs, pageaddr, mask, bits); From b5aa664679510645fa01f55590db60ca2657f7fc Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 14:27:28 +0100 Subject: [PATCH 04/26] target/arm: Move constant expanders to translate.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Some of the constant expanders defined in translate.c are generically useful and will be used by the separate C files for VFP and Neon once they are created; move the expander definitions to translate.h. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-id: 20210430132740.10391-2-peter.maydell@linaro.org --- target/arm/translate.c | 24 ------------------------ target/arm/translate.h | 24 ++++++++++++++++++++++++ 2 files changed, 24 insertions(+), 24 deletions(-) diff --git a/target/arm/translate.c b/target/arm/translate.c index 43ff0d4b8a..bb9e228d1a 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -109,30 +109,6 @@ static void arm_gen_condlabel(DisasContext *s) } } -/* - * Constant expanders for the decoders. - */ - -static int negate(DisasContext *s, int x) -{ - return -x; -} - -static int plus_2(DisasContext *s, int x) -{ - return x + 2; -} - -static int times_2(DisasContext *s, int x) -{ - return x * 2; -} - -static int times_4(DisasContext *s, int x) -{ - return x * 4; -} - /* Flags for the disas_set_da_iss info argument: * lower bits hold the Rt register number, higher bits are flags. */ diff --git a/target/arm/translate.h b/target/arm/translate.h index ccf60c96d8..b5b2161959 100644 --- a/target/arm/translate.h +++ b/target/arm/translate.h @@ -118,6 +118,30 @@ extern TCGv_i32 cpu_NF, cpu_ZF, cpu_CF, cpu_VF; extern TCGv_i64 cpu_exclusive_addr; extern TCGv_i64 cpu_exclusive_val; +/* + * Constant expanders for the decoders. + */ + +static inline int negate(DisasContext *s, int x) +{ + return -x; +} + +static inline int plus_2(DisasContext *s, int x) +{ + return x + 2; +} + +static inline int times_2(DisasContext *s, int x) +{ + return x * 2; +} + +static inline int times_4(DisasContext *s, int x) +{ + return x * 4; +} + static inline int arm_dc_feature(DisasContext *dc, int feature) { return (dc->features & (1ULL << feature)) != 0; From d9318a5f9c32225a9d5365758ae5a329b55de2fe Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 14:27:29 +0100 Subject: [PATCH 05/26] target/arm: Share unallocated_encoding() and gen_exception_insn() The unallocated_encoding() function is the same in both translate-a64.c and translate.c; make the translate.c function global and drop the translate-a64.c version. To do this we need to also share gen_exception_insn(), which currently exists in two slightly different versions for A32 and A64: merge those into a single function that can work for both. This will be useful for splitting up translate.c, which will require unallocated_encoding() to no longer be file-local. It's also hopefully less confusing to have only one version of the function rather than two. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20210430132740.10391-3-peter.maydell@linaro.org --- target/arm/translate-a64.c | 15 --------------- target/arm/translate-a64.h | 2 -- target/arm/translate.c | 14 +++++++++----- target/arm/translate.h | 3 +++ 4 files changed, 12 insertions(+), 22 deletions(-) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index 95897e63af..0c80d0b505 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -359,14 +359,6 @@ static void gen_exception_internal_insn(DisasContext *s, uint64_t pc, int excp) s->base.is_jmp = DISAS_NORETURN; } -static void gen_exception_insn(DisasContext *s, uint64_t pc, int excp, - uint32_t syndrome, uint32_t target_el) -{ - gen_a64_set_pc_im(pc); - gen_exception(excp, syndrome, target_el); - s->base.is_jmp = DISAS_NORETURN; -} - static void gen_exception_bkpt_insn(DisasContext *s, uint32_t syndrome) { TCGv_i32 tcg_syn; @@ -437,13 +429,6 @@ static inline void gen_goto_tb(DisasContext *s, int n, uint64_t dest) } } -void unallocated_encoding(DisasContext *s) -{ - /* Unallocated and reserved encodings are uncategorized */ - gen_exception_insn(s, s->pc_curr, EXCP_UDEF, syn_uncategorized(), - default_exception_el(s)); -} - static void init_tmp_a64_array(DisasContext *s) { #ifdef CONFIG_DEBUG_TCG diff --git a/target/arm/translate-a64.h b/target/arm/translate-a64.h index 868d355048..89437276e7 100644 --- a/target/arm/translate-a64.h +++ b/target/arm/translate-a64.h @@ -18,8 +18,6 @@ #ifndef TARGET_ARM_TRANSLATE_A64_H #define TARGET_ARM_TRANSLATE_A64_H -void unallocated_encoding(DisasContext *s); - #define unsupported_encoding(s, insn) \ do { \ qemu_log_mask(LOG_UNIMP, \ diff --git a/target/arm/translate.c b/target/arm/translate.c index bb9e228d1a..8b71b1c41b 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -1069,11 +1069,15 @@ static void gen_exception_internal_insn(DisasContext *s, uint32_t pc, int excp) s->base.is_jmp = DISAS_NORETURN; } -static void gen_exception_insn(DisasContext *s, uint32_t pc, int excp, - int syn, uint32_t target_el) +void gen_exception_insn(DisasContext *s, uint64_t pc, int excp, + uint32_t syn, uint32_t target_el) { - gen_set_condexec(s); - gen_set_pc_im(s, pc); + if (s->aarch64) { + gen_a64_set_pc_im(pc); + } else { + gen_set_condexec(s); + gen_set_pc_im(s, pc); + } gen_exception(excp, syn, target_el); s->base.is_jmp = DISAS_NORETURN; } @@ -1090,7 +1094,7 @@ static void gen_exception_bkpt_insn(DisasContext *s, uint32_t syn) s->base.is_jmp = DISAS_NORETURN; } -static void unallocated_encoding(DisasContext *s) +void unallocated_encoding(DisasContext *s) { /* Unallocated and reserved encodings are uncategorized */ gen_exception_insn(s, s->pc_curr, EXCP_UDEF, syn_uncategorized(), diff --git a/target/arm/translate.h b/target/arm/translate.h index b5b2161959..8130a3be29 100644 --- a/target/arm/translate.h +++ b/target/arm/translate.h @@ -229,6 +229,9 @@ void arm_free_cc(DisasCompare *cmp); void arm_jump_cc(DisasCompare *cmp, TCGLabel *label); void arm_gen_test_cc(int cc, TCGLabel *label); MemOp pow2_align(unsigned i); +void unallocated_encoding(DisasContext *s); +void gen_exception_insn(DisasContext *s, uint64_t pc, int excp, + uint32_t syn, uint32_t target_el); /* Return state of Alternate Half-precision flag, caller frees result */ static inline TCGv_i32 get_ahp_flag(void) From 5ce389f2e76e8aa318ec734cc12c0f0e657a9e0e Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 14:27:30 +0100 Subject: [PATCH 06/26] target/arm: Make functions used by m-nocp global We want to split out the .c.inc files which are currently included into translate.c so they are separate compilation units. To do this we need to make some functions which are currently file-local to translate.c have global scope; create a translate-a32.h paralleling the existing translate-a64.h as a place for these declarations to live, so that code moved into the new compilation units can call them. The functions made global here are those required by the m-nocp.decode functions, except that I have converted the whole family of {read,write}_neon_element* and also both the load_cpu and store_cpu functions for consistency, even though m-nocp only wants a few functions from each. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20210430132740.10391-4-peter.maydell@linaro.org --- target/arm/translate-a32.h | 57 ++++++++++++++++++++++++++++++++++ target/arm/translate-vfp.c.inc | 2 +- target/arm/translate.c | 39 +++++------------------ 3 files changed, 65 insertions(+), 33 deletions(-) create mode 100644 target/arm/translate-a32.h diff --git a/target/arm/translate-a32.h b/target/arm/translate-a32.h new file mode 100644 index 0000000000..c5d937b27e --- /dev/null +++ b/target/arm/translate-a32.h @@ -0,0 +1,57 @@ +/* + * AArch32 translation, common definitions. + * + * Copyright (c) 2021 Linaro, Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see . + */ + +#ifndef TARGET_ARM_TRANSLATE_A64_H +#define TARGET_ARM_TRANSLATE_A64_H + +void load_reg_var(DisasContext *s, TCGv_i32 var, int reg); +void arm_gen_condlabel(DisasContext *s); +bool vfp_access_check(DisasContext *s); +void read_neon_element32(TCGv_i32 dest, int reg, int ele, MemOp memop); +void read_neon_element64(TCGv_i64 dest, int reg, int ele, MemOp memop); +void write_neon_element32(TCGv_i32 src, int reg, int ele, MemOp memop); +void write_neon_element64(TCGv_i64 src, int reg, int ele, MemOp memop); + +static inline TCGv_i32 load_cpu_offset(int offset) +{ + TCGv_i32 tmp = tcg_temp_new_i32(); + tcg_gen_ld_i32(tmp, cpu_env, offset); + return tmp; +} + +#define load_cpu_field(name) load_cpu_offset(offsetof(CPUARMState, name)) + +static inline void store_cpu_offset(TCGv_i32 var, int offset) +{ + tcg_gen_st_i32(var, cpu_env, offset); + tcg_temp_free_i32(var); +} + +#define store_cpu_field(var, name) \ + store_cpu_offset(var, offsetof(CPUARMState, name)) + +/* Create a new temporary and set it to the value of a CPU register. */ +static inline TCGv_i32 load_reg(DisasContext *s, int reg) +{ + TCGv_i32 tmp = tcg_temp_new_i32(); + load_reg_var(s, tmp, reg); + return tmp; +} + +#endif diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c.inc index e20d9c7ba6..c368ada877 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c.inc @@ -191,7 +191,7 @@ static bool full_vfp_access_check(DisasContext *s, bool ignore_vfp_enabled) * The most usual kind of VFP access check, for everything except * FMXR/FMRX to the always-available special registers. */ -static bool vfp_access_check(DisasContext *s) +bool vfp_access_check(DisasContext *s) { return full_vfp_access_check(s, false); } diff --git a/target/arm/translate.c b/target/arm/translate.c index 8b71b1c41b..3c1d52279b 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -50,6 +50,7 @@ #define ENABLE_ARCH_8 arm_dc_feature(s, ARM_FEATURE_V8) #include "translate.h" +#include "translate-a32.h" #if defined(CONFIG_USER_ONLY) #define IS_USER(s) 1 @@ -101,7 +102,7 @@ void arm_translate_init(void) } /* Generate a label used for skipping this instruction */ -static void arm_gen_condlabel(DisasContext *s) +void arm_gen_condlabel(DisasContext *s) { if (!s->condjmp) { s->condlabel = gen_new_label(); @@ -187,24 +188,6 @@ static inline int get_a32_user_mem_index(DisasContext *s) } } -static inline TCGv_i32 load_cpu_offset(int offset) -{ - TCGv_i32 tmp = tcg_temp_new_i32(); - tcg_gen_ld_i32(tmp, cpu_env, offset); - return tmp; -} - -#define load_cpu_field(name) load_cpu_offset(offsetof(CPUARMState, name)) - -static inline void store_cpu_offset(TCGv_i32 var, int offset) -{ - tcg_gen_st_i32(var, cpu_env, offset); - tcg_temp_free_i32(var); -} - -#define store_cpu_field(var, name) \ - store_cpu_offset(var, offsetof(CPUARMState, name)) - /* The architectural value of PC. */ static uint32_t read_pc(DisasContext *s) { @@ -212,7 +195,7 @@ static uint32_t read_pc(DisasContext *s) } /* Set a variable to the value of a CPU register. */ -static void load_reg_var(DisasContext *s, TCGv_i32 var, int reg) +void load_reg_var(DisasContext *s, TCGv_i32 var, int reg) { if (reg == 15) { tcg_gen_movi_i32(var, read_pc(s)); @@ -221,14 +204,6 @@ static void load_reg_var(DisasContext *s, TCGv_i32 var, int reg) } } -/* Create a new temporary and set it to the value of a CPU register. */ -static inline TCGv_i32 load_reg(DisasContext *s, int reg) -{ - TCGv_i32 tmp = tcg_temp_new_i32(); - load_reg_var(s, tmp, reg); - return tmp; -} - /* * Create a new temp, REG + OFS, except PC is ALIGN(PC, 4). * This is used for load/store for which use of PC implies (literal), @@ -1208,7 +1183,7 @@ static inline void vfp_store_reg32(TCGv_i32 var, int reg) tcg_gen_st_i32(var, cpu_env, vfp_reg_offset(false, reg)); } -static void read_neon_element32(TCGv_i32 dest, int reg, int ele, MemOp memop) +void read_neon_element32(TCGv_i32 dest, int reg, int ele, MemOp memop) { long off = neon_element_offset(reg, ele, memop); @@ -1234,7 +1209,7 @@ static void read_neon_element32(TCGv_i32 dest, int reg, int ele, MemOp memop) } } -static void read_neon_element64(TCGv_i64 dest, int reg, int ele, MemOp memop) +void read_neon_element64(TCGv_i64 dest, int reg, int ele, MemOp memop) { long off = neon_element_offset(reg, ele, memop); @@ -1253,7 +1228,7 @@ static void read_neon_element64(TCGv_i64 dest, int reg, int ele, MemOp memop) } } -static void write_neon_element32(TCGv_i32 src, int reg, int ele, MemOp memop) +void write_neon_element32(TCGv_i32 src, int reg, int ele, MemOp memop) { long off = neon_element_offset(reg, ele, memop); @@ -1272,7 +1247,7 @@ static void write_neon_element32(TCGv_i32 src, int reg, int ele, MemOp memop) } } -static void write_neon_element64(TCGv_i64 src, int reg, int ele, MemOp memop) +void write_neon_element64(TCGv_i64 src, int reg, int ele, MemOp memop) { long off = neon_element_offset(reg, ele, memop); From 9a5071abbce614c52d0e72bdbd688cd4e2a9ee46 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 14:27:31 +0100 Subject: [PATCH 07/26] target/arm: Split m-nocp trans functions into their own file Currently the trans functions for m-nocp.decode all live in translate-vfp.inc.c; move them out into their own translation unit, translate-m-nocp.c. The trans_* functions here are pure code motion with no changes. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20210430132740.10391-5-peter.maydell@linaro.org --- target/arm/meson.build | 3 +- target/arm/translate-a32.h | 3 + target/arm/translate-m-nocp.c | 221 +++++++++++++++++++++++++++++++++ target/arm/translate-vfp.c.inc | 196 ----------------------------- target/arm/translate.c | 1 - 5 files changed, 226 insertions(+), 198 deletions(-) create mode 100644 target/arm/translate-m-nocp.c diff --git a/target/arm/meson.build b/target/arm/meson.build index 15b936c101..bbee1325bc 100644 --- a/target/arm/meson.build +++ b/target/arm/meson.build @@ -5,7 +5,7 @@ gen = [ decodetree.process('neon-ls.decode', extra_args: '--static-decode=disas_neon_ls'), decodetree.process('vfp.decode', extra_args: '--static-decode=disas_vfp'), decodetree.process('vfp-uncond.decode', extra_args: '--static-decode=disas_vfp_uncond'), - decodetree.process('m-nocp.decode', extra_args: '--static-decode=disas_m_nocp'), + decodetree.process('m-nocp.decode', extra_args: '--decode=disas_m_nocp'), decodetree.process('a32.decode', extra_args: '--static-decode=disas_a32'), decodetree.process('a32-uncond.decode', extra_args: '--static-decode=disas_a32_uncond'), decodetree.process('t32.decode', extra_args: '--static-decode=disas_t32'), @@ -26,6 +26,7 @@ arm_ss.add(files( 'op_helper.c', 'tlb_helper.c', 'translate.c', + 'translate-m-nocp.c', 'vec_helper.c', 'vfp_helper.c', 'cpu_tcg.c', diff --git a/target/arm/translate-a32.h b/target/arm/translate-a32.h index c5d937b27e..cb451f70a4 100644 --- a/target/arm/translate-a32.h +++ b/target/arm/translate-a32.h @@ -20,6 +20,9 @@ #ifndef TARGET_ARM_TRANSLATE_A64_H #define TARGET_ARM_TRANSLATE_A64_H +/* Prototypes for autogenerated disassembler functions */ +bool disas_m_nocp(DisasContext *dc, uint32_t insn); + void load_reg_var(DisasContext *s, TCGv_i32 var, int reg); void arm_gen_condlabel(DisasContext *s); bool vfp_access_check(DisasContext *s); diff --git a/target/arm/translate-m-nocp.c b/target/arm/translate-m-nocp.c new file mode 100644 index 0000000000..d47eb8e153 --- /dev/null +++ b/target/arm/translate-m-nocp.c @@ -0,0 +1,221 @@ +/* + * ARM translation: M-profile NOCP special-case instructions + * + * Copyright (c) 2020 Linaro, Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see . + */ + +#include "qemu/osdep.h" +#include "tcg/tcg-op.h" +#include "translate.h" +#include "translate-a32.h" + +#include "decode-m-nocp.c.inc" + +/* + * Decode VLLDM and VLSTM are nonstandard because: + * * if there is no FPU then these insns must NOP in + * Secure state and UNDEF in Nonsecure state + * * if there is an FPU then these insns do not have + * the usual behaviour that vfp_access_check() provides of + * being controlled by CPACR/NSACR enable bits or the + * lazy-stacking logic. + */ +static bool trans_VLLDM_VLSTM(DisasContext *s, arg_VLLDM_VLSTM *a) +{ + TCGv_i32 fptr; + + if (!arm_dc_feature(s, ARM_FEATURE_M) || + !arm_dc_feature(s, ARM_FEATURE_V8)) { + return false; + } + + if (a->op) { + /* + * T2 encoding ({D0-D31} reglist): v8.1M and up. We choose not + * to take the IMPDEF option to make memory accesses to the stack + * slots that correspond to the D16-D31 registers (discarding + * read data and writing UNKNOWN values), so for us the T2 + * encoding behaves identically to the T1 encoding. + */ + if (!arm_dc_feature(s, ARM_FEATURE_V8_1M)) { + return false; + } + } else { + /* + * T1 encoding ({D0-D15} reglist); undef if we have 32 Dregs. + * This is currently architecturally impossible, but we add the + * check to stay in line with the pseudocode. Note that we must + * emit code for the UNDEF so it takes precedence over the NOCP. + */ + if (dc_isar_feature(aa32_simd_r32, s)) { + unallocated_encoding(s); + return true; + } + } + + /* + * If not secure, UNDEF. We must emit code for this + * rather than returning false so that this takes + * precedence over the m-nocp.decode NOCP fallback. + */ + if (!s->v8m_secure) { + unallocated_encoding(s); + return true; + } + /* If no fpu, NOP. */ + if (!dc_isar_feature(aa32_vfp, s)) { + return true; + } + + fptr = load_reg(s, a->rn); + if (a->l) { + gen_helper_v7m_vlldm(cpu_env, fptr); + } else { + gen_helper_v7m_vlstm(cpu_env, fptr); + } + tcg_temp_free_i32(fptr); + + /* End the TB, because we have updated FP control bits */ + s->base.is_jmp = DISAS_UPDATE_EXIT; + return true; +} + +static bool trans_VSCCLRM(DisasContext *s, arg_VSCCLRM *a) +{ + int btmreg, topreg; + TCGv_i64 zero; + TCGv_i32 aspen, sfpa; + + if (!dc_isar_feature(aa32_m_sec_state, s)) { + /* Before v8.1M, fall through in decode to NOCP check */ + return false; + } + + /* Explicitly UNDEF because this takes precedence over NOCP */ + if (!arm_dc_feature(s, ARM_FEATURE_M_MAIN) || !s->v8m_secure) { + unallocated_encoding(s); + return true; + } + + if (!dc_isar_feature(aa32_vfp_simd, s)) { + /* NOP if we have neither FP nor MVE */ + return true; + } + + /* + * If FPCCR.ASPEN != 0 && CONTROL_S.SFPA == 0 then there is no + * active floating point context so we must NOP (without doing + * any lazy state preservation or the NOCP check). + */ + aspen = load_cpu_field(v7m.fpccr[M_REG_S]); + sfpa = load_cpu_field(v7m.control[M_REG_S]); + tcg_gen_andi_i32(aspen, aspen, R_V7M_FPCCR_ASPEN_MASK); + tcg_gen_xori_i32(aspen, aspen, R_V7M_FPCCR_ASPEN_MASK); + tcg_gen_andi_i32(sfpa, sfpa, R_V7M_CONTROL_SFPA_MASK); + tcg_gen_or_i32(sfpa, sfpa, aspen); + arm_gen_condlabel(s); + tcg_gen_brcondi_i32(TCG_COND_EQ, sfpa, 0, s->condlabel); + + if (s->fp_excp_el != 0) { + gen_exception_insn(s, s->pc_curr, EXCP_NOCP, + syn_uncategorized(), s->fp_excp_el); + return true; + } + + topreg = a->vd + a->imm - 1; + btmreg = a->vd; + + /* Convert to Sreg numbers if the insn specified in Dregs */ + if (a->size == 3) { + topreg = topreg * 2 + 1; + btmreg *= 2; + } + + if (topreg > 63 || (topreg > 31 && !(topreg & 1))) { + /* UNPREDICTABLE: we choose to undef */ + unallocated_encoding(s); + return true; + } + + /* Silently ignore requests to clear D16-D31 if they don't exist */ + if (topreg > 31 && !dc_isar_feature(aa32_simd_r32, s)) { + topreg = 31; + } + + if (!vfp_access_check(s)) { + return true; + } + + /* Zero the Sregs from btmreg to topreg inclusive. */ + zero = tcg_const_i64(0); + if (btmreg & 1) { + write_neon_element64(zero, btmreg >> 1, 1, MO_32); + btmreg++; + } + for (; btmreg + 1 <= topreg; btmreg += 2) { + write_neon_element64(zero, btmreg >> 1, 0, MO_64); + } + if (btmreg == topreg) { + write_neon_element64(zero, btmreg >> 1, 0, MO_32); + btmreg++; + } + assert(btmreg == topreg + 1); + /* TODO: when MVE is implemented, zero VPR here */ + return true; +} + +static bool trans_NOCP(DisasContext *s, arg_nocp *a) +{ + /* + * Handle M-profile early check for disabled coprocessor: + * all we need to do here is emit the NOCP exception if + * the coprocessor is disabled. Otherwise we return false + * and the real VFP/etc decode will handle the insn. + */ + assert(arm_dc_feature(s, ARM_FEATURE_M)); + + if (a->cp == 11) { + a->cp = 10; + } + if (arm_dc_feature(s, ARM_FEATURE_V8_1M) && + (a->cp == 8 || a->cp == 9 || a->cp == 14 || a->cp == 15)) { + /* in v8.1M cp 8, 9, 14, 15 also are governed by the cp10 enable */ + a->cp = 10; + } + + if (a->cp != 10) { + gen_exception_insn(s, s->pc_curr, EXCP_NOCP, + syn_uncategorized(), default_exception_el(s)); + return true; + } + + if (s->fp_excp_el != 0) { + gen_exception_insn(s, s->pc_curr, EXCP_NOCP, + syn_uncategorized(), s->fp_excp_el); + return true; + } + + return false; +} + +static bool trans_NOCP_8_1(DisasContext *s, arg_nocp *a) +{ + /* This range needs a coprocessor check for v8.1M and later only */ + if (!arm_dc_feature(s, ARM_FEATURE_V8_1M)) { + return false; + } + return trans_NOCP(s, a); +} diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c.inc index c368ada877..500492f02f 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c.inc @@ -3800,202 +3800,6 @@ static bool trans_VCVT_dp_int(DisasContext *s, arg_VCVT_dp_int *a) return true; } -/* - * Decode VLLDM and VLSTM are nonstandard because: - * * if there is no FPU then these insns must NOP in - * Secure state and UNDEF in Nonsecure state - * * if there is an FPU then these insns do not have - * the usual behaviour that vfp_access_check() provides of - * being controlled by CPACR/NSACR enable bits or the - * lazy-stacking logic. - */ -static bool trans_VLLDM_VLSTM(DisasContext *s, arg_VLLDM_VLSTM *a) -{ - TCGv_i32 fptr; - - if (!arm_dc_feature(s, ARM_FEATURE_M) || - !arm_dc_feature(s, ARM_FEATURE_V8)) { - return false; - } - - if (a->op) { - /* - * T2 encoding ({D0-D31} reglist): v8.1M and up. We choose not - * to take the IMPDEF option to make memory accesses to the stack - * slots that correspond to the D16-D31 registers (discarding - * read data and writing UNKNOWN values), so for us the T2 - * encoding behaves identically to the T1 encoding. - */ - if (!arm_dc_feature(s, ARM_FEATURE_V8_1M)) { - return false; - } - } else { - /* - * T1 encoding ({D0-D15} reglist); undef if we have 32 Dregs. - * This is currently architecturally impossible, but we add the - * check to stay in line with the pseudocode. Note that we must - * emit code for the UNDEF so it takes precedence over the NOCP. - */ - if (dc_isar_feature(aa32_simd_r32, s)) { - unallocated_encoding(s); - return true; - } - } - - /* - * If not secure, UNDEF. We must emit code for this - * rather than returning false so that this takes - * precedence over the m-nocp.decode NOCP fallback. - */ - if (!s->v8m_secure) { - unallocated_encoding(s); - return true; - } - /* If no fpu, NOP. */ - if (!dc_isar_feature(aa32_vfp, s)) { - return true; - } - - fptr = load_reg(s, a->rn); - if (a->l) { - gen_helper_v7m_vlldm(cpu_env, fptr); - } else { - gen_helper_v7m_vlstm(cpu_env, fptr); - } - tcg_temp_free_i32(fptr); - - /* End the TB, because we have updated FP control bits */ - s->base.is_jmp = DISAS_UPDATE_EXIT; - return true; -} - -static bool trans_VSCCLRM(DisasContext *s, arg_VSCCLRM *a) -{ - int btmreg, topreg; - TCGv_i64 zero; - TCGv_i32 aspen, sfpa; - - if (!dc_isar_feature(aa32_m_sec_state, s)) { - /* Before v8.1M, fall through in decode to NOCP check */ - return false; - } - - /* Explicitly UNDEF because this takes precedence over NOCP */ - if (!arm_dc_feature(s, ARM_FEATURE_M_MAIN) || !s->v8m_secure) { - unallocated_encoding(s); - return true; - } - - if (!dc_isar_feature(aa32_vfp_simd, s)) { - /* NOP if we have neither FP nor MVE */ - return true; - } - - /* - * If FPCCR.ASPEN != 0 && CONTROL_S.SFPA == 0 then there is no - * active floating point context so we must NOP (without doing - * any lazy state preservation or the NOCP check). - */ - aspen = load_cpu_field(v7m.fpccr[M_REG_S]); - sfpa = load_cpu_field(v7m.control[M_REG_S]); - tcg_gen_andi_i32(aspen, aspen, R_V7M_FPCCR_ASPEN_MASK); - tcg_gen_xori_i32(aspen, aspen, R_V7M_FPCCR_ASPEN_MASK); - tcg_gen_andi_i32(sfpa, sfpa, R_V7M_CONTROL_SFPA_MASK); - tcg_gen_or_i32(sfpa, sfpa, aspen); - arm_gen_condlabel(s); - tcg_gen_brcondi_i32(TCG_COND_EQ, sfpa, 0, s->condlabel); - - if (s->fp_excp_el != 0) { - gen_exception_insn(s, s->pc_curr, EXCP_NOCP, - syn_uncategorized(), s->fp_excp_el); - return true; - } - - topreg = a->vd + a->imm - 1; - btmreg = a->vd; - - /* Convert to Sreg numbers if the insn specified in Dregs */ - if (a->size == 3) { - topreg = topreg * 2 + 1; - btmreg *= 2; - } - - if (topreg > 63 || (topreg > 31 && !(topreg & 1))) { - /* UNPREDICTABLE: we choose to undef */ - unallocated_encoding(s); - return true; - } - - /* Silently ignore requests to clear D16-D31 if they don't exist */ - if (topreg > 31 && !dc_isar_feature(aa32_simd_r32, s)) { - topreg = 31; - } - - if (!vfp_access_check(s)) { - return true; - } - - /* Zero the Sregs from btmreg to topreg inclusive. */ - zero = tcg_const_i64(0); - if (btmreg & 1) { - write_neon_element64(zero, btmreg >> 1, 1, MO_32); - btmreg++; - } - for (; btmreg + 1 <= topreg; btmreg += 2) { - write_neon_element64(zero, btmreg >> 1, 0, MO_64); - } - if (btmreg == topreg) { - write_neon_element64(zero, btmreg >> 1, 0, MO_32); - btmreg++; - } - assert(btmreg == topreg + 1); - /* TODO: when MVE is implemented, zero VPR here */ - return true; -} - -static bool trans_NOCP(DisasContext *s, arg_nocp *a) -{ - /* - * Handle M-profile early check for disabled coprocessor: - * all we need to do here is emit the NOCP exception if - * the coprocessor is disabled. Otherwise we return false - * and the real VFP/etc decode will handle the insn. - */ - assert(arm_dc_feature(s, ARM_FEATURE_M)); - - if (a->cp == 11) { - a->cp = 10; - } - if (arm_dc_feature(s, ARM_FEATURE_V8_1M) && - (a->cp == 8 || a->cp == 9 || a->cp == 14 || a->cp == 15)) { - /* in v8.1M cp 8, 9, 14, 15 also are governed by the cp10 enable */ - a->cp = 10; - } - - if (a->cp != 10) { - gen_exception_insn(s, s->pc_curr, EXCP_NOCP, - syn_uncategorized(), default_exception_el(s)); - return true; - } - - if (s->fp_excp_el != 0) { - gen_exception_insn(s, s->pc_curr, EXCP_NOCP, - syn_uncategorized(), s->fp_excp_el); - return true; - } - - return false; -} - -static bool trans_NOCP_8_1(DisasContext *s, arg_nocp *a) -{ - /* This range needs a coprocessor check for v8.1M and later only */ - if (!arm_dc_feature(s, ARM_FEATURE_V8_1M)) { - return false; - } - return trans_NOCP(s, a); -} - static bool trans_VINS(DisasContext *s, arg_VINS *a) { TCGv_i32 rd, rm; diff --git a/target/arm/translate.c b/target/arm/translate.c index 3c1d52279b..46f6dfcf42 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -1273,7 +1273,6 @@ static TCGv_ptr vfp_reg_ptr(bool dp, int reg) #define ARM_CP_RW_BIT (1 << 20) /* Include the VFP and Neon decoders */ -#include "decode-m-nocp.c.inc" #include "translate-vfp.c.inc" #include "translate-neon.c.inc" From 73d2f5d2bbbfbe1be6930ae388f92946e913dcc9 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 14:27:32 +0100 Subject: [PATCH 08/26] target/arm: Move gen_aa32 functions to translate-a32.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move the various gen_aa32* functions and macros out of translate.c and into translate-a32.h. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-id: 20210430132740.10391-6-peter.maydell@linaro.org --- target/arm/translate-a32.h | 53 ++++++++++++++++++++++++++++++++++++++ target/arm/translate.c | 51 ++++++++++++------------------------ 2 files changed, 69 insertions(+), 35 deletions(-) diff --git a/target/arm/translate-a32.h b/target/arm/translate-a32.h index cb451f70a4..522aa83636 100644 --- a/target/arm/translate-a32.h +++ b/target/arm/translate-a32.h @@ -57,4 +57,57 @@ static inline TCGv_i32 load_reg(DisasContext *s, int reg) return tmp; } +void gen_aa32_ld_internal_i32(DisasContext *s, TCGv_i32 val, + TCGv_i32 a32, int index, MemOp opc); +void gen_aa32_st_internal_i32(DisasContext *s, TCGv_i32 val, + TCGv_i32 a32, int index, MemOp opc); +void gen_aa32_ld_internal_i64(DisasContext *s, TCGv_i64 val, + TCGv_i32 a32, int index, MemOp opc); +void gen_aa32_st_internal_i64(DisasContext *s, TCGv_i64 val, + TCGv_i32 a32, int index, MemOp opc); +void gen_aa32_ld_i32(DisasContext *s, TCGv_i32 val, TCGv_i32 a32, + int index, MemOp opc); +void gen_aa32_st_i32(DisasContext *s, TCGv_i32 val, TCGv_i32 a32, + int index, MemOp opc); +void gen_aa32_ld_i64(DisasContext *s, TCGv_i64 val, TCGv_i32 a32, + int index, MemOp opc); +void gen_aa32_st_i64(DisasContext *s, TCGv_i64 val, TCGv_i32 a32, + int index, MemOp opc); + +#define DO_GEN_LD(SUFF, OPC) \ + static inline void gen_aa32_ld##SUFF(DisasContext *s, TCGv_i32 val, \ + TCGv_i32 a32, int index) \ + { \ + gen_aa32_ld_i32(s, val, a32, index, OPC); \ + } + +#define DO_GEN_ST(SUFF, OPC) \ + static inline void gen_aa32_st##SUFF(DisasContext *s, TCGv_i32 val, \ + TCGv_i32 a32, int index) \ + { \ + gen_aa32_st_i32(s, val, a32, index, OPC); \ + } + +static inline void gen_aa32_ld64(DisasContext *s, TCGv_i64 val, + TCGv_i32 a32, int index) +{ + gen_aa32_ld_i64(s, val, a32, index, MO_Q); +} + +static inline void gen_aa32_st64(DisasContext *s, TCGv_i64 val, + TCGv_i32 a32, int index) +{ + gen_aa32_st_i64(s, val, a32, index, MO_Q); +} + +DO_GEN_LD(8u, MO_UB) +DO_GEN_LD(16u, MO_UW) +DO_GEN_LD(32u, MO_UL) +DO_GEN_ST(8, MO_UB) +DO_GEN_ST(16, MO_UW) +DO_GEN_ST(32, MO_UL) + +#undef DO_GEN_LD +#undef DO_GEN_ST + #endif diff --git a/target/arm/translate.c b/target/arm/translate.c index 46f6dfcf42..5113cd2fea 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -899,24 +899,24 @@ static TCGv gen_aa32_addr(DisasContext *s, TCGv_i32 a32, MemOp op) * Internal routines are used for NEON cases where the endianness * and/or alignment has already been taken into account and manipulated. */ -static void gen_aa32_ld_internal_i32(DisasContext *s, TCGv_i32 val, - TCGv_i32 a32, int index, MemOp opc) +void gen_aa32_ld_internal_i32(DisasContext *s, TCGv_i32 val, + TCGv_i32 a32, int index, MemOp opc) { TCGv addr = gen_aa32_addr(s, a32, opc); tcg_gen_qemu_ld_i32(val, addr, index, opc); tcg_temp_free(addr); } -static void gen_aa32_st_internal_i32(DisasContext *s, TCGv_i32 val, - TCGv_i32 a32, int index, MemOp opc) +void gen_aa32_st_internal_i32(DisasContext *s, TCGv_i32 val, + TCGv_i32 a32, int index, MemOp opc) { TCGv addr = gen_aa32_addr(s, a32, opc); tcg_gen_qemu_st_i32(val, addr, index, opc); tcg_temp_free(addr); } -static void gen_aa32_ld_internal_i64(DisasContext *s, TCGv_i64 val, - TCGv_i32 a32, int index, MemOp opc) +void gen_aa32_ld_internal_i64(DisasContext *s, TCGv_i64 val, + TCGv_i32 a32, int index, MemOp opc) { TCGv addr = gen_aa32_addr(s, a32, opc); @@ -929,8 +929,8 @@ static void gen_aa32_ld_internal_i64(DisasContext *s, TCGv_i64 val, tcg_temp_free(addr); } -static void gen_aa32_st_internal_i64(DisasContext *s, TCGv_i64 val, - TCGv_i32 a32, int index, MemOp opc) +void gen_aa32_st_internal_i64(DisasContext *s, TCGv_i64 val, + TCGv_i32 a32, int index, MemOp opc) { TCGv addr = gen_aa32_addr(s, a32, opc); @@ -946,26 +946,26 @@ static void gen_aa32_st_internal_i64(DisasContext *s, TCGv_i64 val, tcg_temp_free(addr); } -static void gen_aa32_ld_i32(DisasContext *s, TCGv_i32 val, TCGv_i32 a32, - int index, MemOp opc) +void gen_aa32_ld_i32(DisasContext *s, TCGv_i32 val, TCGv_i32 a32, + int index, MemOp opc) { gen_aa32_ld_internal_i32(s, val, a32, index, finalize_memop(s, opc)); } -static void gen_aa32_st_i32(DisasContext *s, TCGv_i32 val, TCGv_i32 a32, - int index, MemOp opc) +void gen_aa32_st_i32(DisasContext *s, TCGv_i32 val, TCGv_i32 a32, + int index, MemOp opc) { gen_aa32_st_internal_i32(s, val, a32, index, finalize_memop(s, opc)); } -static void gen_aa32_ld_i64(DisasContext *s, TCGv_i64 val, TCGv_i32 a32, - int index, MemOp opc) +void gen_aa32_ld_i64(DisasContext *s, TCGv_i64 val, TCGv_i32 a32, + int index, MemOp opc) { gen_aa32_ld_internal_i64(s, val, a32, index, finalize_memop(s, opc)); } -static void gen_aa32_st_i64(DisasContext *s, TCGv_i64 val, TCGv_i32 a32, - int index, MemOp opc) +void gen_aa32_st_i64(DisasContext *s, TCGv_i64 val, TCGv_i32 a32, + int index, MemOp opc) { gen_aa32_st_internal_i64(s, val, a32, index, finalize_memop(s, opc)); } @@ -984,25 +984,6 @@ static void gen_aa32_st_i64(DisasContext *s, TCGv_i64 val, TCGv_i32 a32, gen_aa32_st_i32(s, val, a32, index, OPC); \ } -static inline void gen_aa32_ld64(DisasContext *s, TCGv_i64 val, - TCGv_i32 a32, int index) -{ - gen_aa32_ld_i64(s, val, a32, index, MO_Q); -} - -static inline void gen_aa32_st64(DisasContext *s, TCGv_i64 val, - TCGv_i32 a32, int index) -{ - gen_aa32_st_i64(s, val, a32, index, MO_Q); -} - -DO_GEN_LD(8u, MO_UB) -DO_GEN_LD(16u, MO_UW) -DO_GEN_LD(32u, MO_UL) -DO_GEN_ST(8, MO_UB) -DO_GEN_ST(16, MO_UW) -DO_GEN_ST(32, MO_UL) - static inline void gen_hvc(DisasContext *s, int imm16) { /* The pre HVC helper handles cases when HVC gets trapped From 06085d6a10e11fb9df871648668b072905936566 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 14:27:33 +0100 Subject: [PATCH 09/26] target/arm: Move vfp_{load, store}_reg{32, 64} to translate-vfp.c.inc MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The functions vfp_load_reg32(), vfp_load_reg64(), vfp_store_reg32() and vfp_store_reg64() are used only in translate-vfp.c.inc. Move them to that file. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-id: 20210430132740.10391-7-peter.maydell@linaro.org --- target/arm/translate-vfp.c.inc | 20 ++++++++++++++++++++ target/arm/translate.c | 20 -------------------- 2 files changed, 20 insertions(+), 20 deletions(-) diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c.inc index 500492f02f..1004d1fd09 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c.inc @@ -30,6 +30,26 @@ #include "decode-vfp.c.inc" #include "decode-vfp-uncond.c.inc" +static inline void vfp_load_reg64(TCGv_i64 var, int reg) +{ + tcg_gen_ld_i64(var, cpu_env, vfp_reg_offset(true, reg)); +} + +static inline void vfp_store_reg64(TCGv_i64 var, int reg) +{ + tcg_gen_st_i64(var, cpu_env, vfp_reg_offset(true, reg)); +} + +static inline void vfp_load_reg32(TCGv_i32 var, int reg) +{ + tcg_gen_ld_i32(var, cpu_env, vfp_reg_offset(false, reg)); +} + +static inline void vfp_store_reg32(TCGv_i32 var, int reg) +{ + tcg_gen_st_i32(var, cpu_env, vfp_reg_offset(false, reg)); +} + /* * The imm8 encodes the sign bit, enough bits to represent an exponent in * the range 01....1xx to 10....0xx, and the most significant 4 bits of diff --git a/target/arm/translate.c b/target/arm/translate.c index 5113cd2fea..c8b9cedfcf 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -1144,26 +1144,6 @@ static long vfp_reg_offset(bool dp, unsigned reg) } } -static inline void vfp_load_reg64(TCGv_i64 var, int reg) -{ - tcg_gen_ld_i64(var, cpu_env, vfp_reg_offset(true, reg)); -} - -static inline void vfp_store_reg64(TCGv_i64 var, int reg) -{ - tcg_gen_st_i64(var, cpu_env, vfp_reg_offset(true, reg)); -} - -static inline void vfp_load_reg32(TCGv_i32 var, int reg) -{ - tcg_gen_ld_i32(var, cpu_env, vfp_reg_offset(false, reg)); -} - -static inline void vfp_store_reg32(TCGv_i32 var, int reg) -{ - tcg_gen_st_i32(var, cpu_env, vfp_reg_offset(false, reg)); -} - void read_neon_element32(TCGv_i32 dest, int reg, int ele, MemOp memop) { long off = neon_element_offset(reg, ele, memop); From 4a800a739d6c7760a35b4be6a01bb3819de51030 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 14:27:34 +0100 Subject: [PATCH 10/26] target/arm: Make functions used by translate-vfp global MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make the remaining functions which are needed by translate-vfp.c.inc global. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-id: 20210430132740.10391-8-peter.maydell@linaro.org --- target/arm/translate-a32.h | 18 ++++++++++++++++++ target/arm/translate.c | 25 ++++++++----------------- 2 files changed, 26 insertions(+), 17 deletions(-) diff --git a/target/arm/translate-a32.h b/target/arm/translate-a32.h index 522aa83636..326cbafe99 100644 --- a/target/arm/translate-a32.h +++ b/target/arm/translate-a32.h @@ -30,6 +30,13 @@ void read_neon_element32(TCGv_i32 dest, int reg, int ele, MemOp memop); void read_neon_element64(TCGv_i64 dest, int reg, int ele, MemOp memop); void write_neon_element32(TCGv_i32 src, int reg, int ele, MemOp memop); void write_neon_element64(TCGv_i64 src, int reg, int ele, MemOp memop); +TCGv_i32 add_reg_for_lit(DisasContext *s, int reg, int ofs); +void gen_set_cpsr(TCGv_i32 var, uint32_t mask); +void gen_set_condexec(DisasContext *s); +void gen_set_pc_im(DisasContext *s, target_ulong val); +void gen_lookup_tb(DisasContext *s); +long vfp_reg_offset(bool dp, unsigned reg); +long neon_full_reg_offset(unsigned reg); static inline TCGv_i32 load_cpu_offset(int offset) { @@ -57,6 +64,8 @@ static inline TCGv_i32 load_reg(DisasContext *s, int reg) return tmp; } +void store_reg(DisasContext *s, int reg, TCGv_i32 var); + void gen_aa32_ld_internal_i32(DisasContext *s, TCGv_i32 val, TCGv_i32 a32, int index, MemOp opc); void gen_aa32_st_internal_i32(DisasContext *s, TCGv_i32 val, @@ -110,4 +119,13 @@ DO_GEN_ST(32, MO_UL) #undef DO_GEN_LD #undef DO_GEN_ST +#if defined(CONFIG_USER_ONLY) +#define IS_USER(s) 1 +#else +#define IS_USER(s) (s->user) +#endif + +/* Set NZCV flags from the high 4 bits of var. */ +#define gen_set_nzcv(var) gen_set_cpsr(var, CPSR_NZCV) + #endif diff --git a/target/arm/translate.c b/target/arm/translate.c index c8b9cedfcf..c83f2205b6 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -52,12 +52,6 @@ #include "translate.h" #include "translate-a32.h" -#if defined(CONFIG_USER_ONLY) -#define IS_USER(s) 1 -#else -#define IS_USER(s) (s->user) -#endif - /* These are TCG temporaries used only by the legacy iwMMXt decoder */ static TCGv_i64 cpu_V0, cpu_V1, cpu_M0; /* These are TCG globals which alias CPUARMState fields */ @@ -209,7 +203,7 @@ void load_reg_var(DisasContext *s, TCGv_i32 var, int reg) * This is used for load/store for which use of PC implies (literal), * or ADD that implies ADR. */ -static TCGv_i32 add_reg_for_lit(DisasContext *s, int reg, int ofs) +TCGv_i32 add_reg_for_lit(DisasContext *s, int reg, int ofs) { TCGv_i32 tmp = tcg_temp_new_i32(); @@ -223,7 +217,7 @@ static TCGv_i32 add_reg_for_lit(DisasContext *s, int reg, int ofs) /* Set a CPU register. The source must be a temporary and will be marked as dead. */ -static void store_reg(DisasContext *s, int reg, TCGv_i32 var) +void store_reg(DisasContext *s, int reg, TCGv_i32 var) { if (reg == 15) { /* In Thumb mode, we must ignore bit 0. @@ -264,15 +258,12 @@ static void store_sp_checked(DisasContext *s, TCGv_i32 var) #define gen_sxtb16(var) gen_helper_sxtb16(var, var) #define gen_uxtb16(var) gen_helper_uxtb16(var, var) - -static inline void gen_set_cpsr(TCGv_i32 var, uint32_t mask) +void gen_set_cpsr(TCGv_i32 var, uint32_t mask) { TCGv_i32 tmp_mask = tcg_const_i32(mask); gen_helper_cpsr_write(cpu_env, var, tmp_mask); tcg_temp_free_i32(tmp_mask); } -/* Set NZCV flags from the high 4 bits of var. */ -#define gen_set_nzcv(var) gen_set_cpsr(var, CPSR_NZCV) static void gen_exception_internal(int excp) { @@ -697,7 +688,7 @@ void arm_gen_test_cc(int cc, TCGLabel *label) arm_free_cc(&cmp); } -static inline void gen_set_condexec(DisasContext *s) +void gen_set_condexec(DisasContext *s) { if (s->condexec_mask) { uint32_t val = (s->condexec_cond << 4) | (s->condexec_mask >> 1); @@ -707,7 +698,7 @@ static inline void gen_set_condexec(DisasContext *s) } } -static inline void gen_set_pc_im(DisasContext *s, target_ulong val) +void gen_set_pc_im(DisasContext *s, target_ulong val) { tcg_gen_movi_i32(cpu_R[15], val); } @@ -1074,7 +1065,7 @@ static void gen_exception_el(DisasContext *s, int excp, uint32_t syn, } /* Force a TB lookup after an instruction that changes the CPU state. */ -static inline void gen_lookup_tb(DisasContext *s) +void gen_lookup_tb(DisasContext *s) { tcg_gen_movi_i32(cpu_R[15], s->base.pc_next); s->base.is_jmp = DISAS_EXIT; @@ -1109,7 +1100,7 @@ static inline void gen_hlt(DisasContext *s, int imm) /* * Return the offset of a "full" NEON Dreg. */ -static long neon_full_reg_offset(unsigned reg) +long neon_full_reg_offset(unsigned reg) { return offsetof(CPUARMState, vfp.zregs[reg >> 1].d[reg & 1]); } @@ -1135,7 +1126,7 @@ static long neon_element_offset(int reg, int element, MemOp memop) } /* Return the offset of a VFP Dreg (dp = true) or VFP Sreg (dp = false). */ -static long vfp_reg_offset(bool dp, unsigned reg) +long vfp_reg_offset(bool dp, unsigned reg) { if (dp) { return neon_element_offset(reg, 0, MO_64); From 45fbd5a96733c61a7bf85a382809bd9839afde94 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 14:27:35 +0100 Subject: [PATCH 11/26] target/arm: Make translate-vfp.c.inc its own compilation unit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Switch translate-vfp.c.inc from being #included into translate.c to being its own compilation unit. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-id: 20210430132740.10391-9-peter.maydell@linaro.org --- target/arm/meson.build | 5 +++-- target/arm/translate-a32.h | 2 ++ target/arm/{translate-vfp.c.inc => translate-vfp.c} | 12 +++++++----- target/arm/translate.c | 3 +-- 4 files changed, 13 insertions(+), 9 deletions(-) rename target/arm/{translate-vfp.c.inc => translate-vfp.c} (99%) diff --git a/target/arm/meson.build b/target/arm/meson.build index bbee1325bc..f6360f33f1 100644 --- a/target/arm/meson.build +++ b/target/arm/meson.build @@ -3,8 +3,8 @@ gen = [ decodetree.process('neon-shared.decode', extra_args: '--static-decode=disas_neon_shared'), decodetree.process('neon-dp.decode', extra_args: '--static-decode=disas_neon_dp'), decodetree.process('neon-ls.decode', extra_args: '--static-decode=disas_neon_ls'), - decodetree.process('vfp.decode', extra_args: '--static-decode=disas_vfp'), - decodetree.process('vfp-uncond.decode', extra_args: '--static-decode=disas_vfp_uncond'), + decodetree.process('vfp.decode', extra_args: '--decode=disas_vfp'), + decodetree.process('vfp-uncond.decode', extra_args: '--decode=disas_vfp_uncond'), decodetree.process('m-nocp.decode', extra_args: '--decode=disas_m_nocp'), decodetree.process('a32.decode', extra_args: '--static-decode=disas_a32'), decodetree.process('a32-uncond.decode', extra_args: '--static-decode=disas_a32_uncond'), @@ -27,6 +27,7 @@ arm_ss.add(files( 'tlb_helper.c', 'translate.c', 'translate-m-nocp.c', + 'translate-vfp.c', 'vec_helper.c', 'vfp_helper.c', 'cpu_tcg.c', diff --git a/target/arm/translate-a32.h b/target/arm/translate-a32.h index 326cbafe99..e767366f69 100644 --- a/target/arm/translate-a32.h +++ b/target/arm/translate-a32.h @@ -22,6 +22,8 @@ /* Prototypes for autogenerated disassembler functions */ bool disas_m_nocp(DisasContext *dc, uint32_t insn); +bool disas_vfp(DisasContext *s, uint32_t insn); +bool disas_vfp_uncond(DisasContext *s, uint32_t insn); void load_reg_var(DisasContext *s, TCGv_i32 var, int reg); void arm_gen_condlabel(DisasContext *s); diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c similarity index 99% rename from target/arm/translate-vfp.c.inc rename to target/arm/translate-vfp.c index 1004d1fd09..3da84f30a0 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c @@ -20,11 +20,13 @@ * License along with this library; if not, see . */ -/* - * This file is intended to be included from translate.c; it uses - * some macros and definitions provided by that file. - * It might be possible to convert it to a standalone .c file eventually. - */ +#include "qemu/osdep.h" +#include "tcg/tcg-op.h" +#include "tcg/tcg-op-gvec.h" +#include "exec/exec-all.h" +#include "exec/gen-icount.h" +#include "translate.h" +#include "translate-a32.h" /* Include the generated VFP decoder */ #include "decode-vfp.c.inc" diff --git a/target/arm/translate.c b/target/arm/translate.c index c83f2205b6..6aec494e81 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -1224,8 +1224,7 @@ static TCGv_ptr vfp_reg_ptr(bool dp, int reg) #define ARM_CP_RW_BIT (1 << 20) -/* Include the VFP and Neon decoders */ -#include "translate-vfp.c.inc" +/* Include the Neon decoder */ #include "translate-neon.c.inc" static inline void iwmmxt_load_reg(TCGv_i64 var, int reg) From eb554d612d6a7718154babfc9e2b36694397b443 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 14:27:36 +0100 Subject: [PATCH 12/26] target/arm: Move vfp_reg_ptr() to translate-neon.c.inc MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The function vfp_reg_ptr() is used only in translate-neon.c.inc; move it there. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-id: 20210430132740.10391-10-peter.maydell@linaro.org --- target/arm/translate-neon.c.inc | 7 +++++++ target/arm/translate.c | 7 ------- 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/target/arm/translate-neon.c.inc b/target/arm/translate-neon.c.inc index a02b8369a1..73bf376ed3 100644 --- a/target/arm/translate-neon.c.inc +++ b/target/arm/translate-neon.c.inc @@ -60,6 +60,13 @@ static inline int neon_3same_fp_size(DisasContext *s, int x) #include "decode-neon-ls.c.inc" #include "decode-neon-shared.c.inc" +static TCGv_ptr vfp_reg_ptr(bool dp, int reg) +{ + TCGv_ptr ret = tcg_temp_new_ptr(); + tcg_gen_addi_ptr(ret, cpu_env, vfp_reg_offset(dp, reg)); + return ret; +} + static void neon_load_element(TCGv_i32 var, int reg, int ele, MemOp mop) { long offset = neon_element_offset(reg, ele, mop & MO_SIZE); diff --git a/target/arm/translate.c b/target/arm/translate.c index 6aec494e81..095b5c509e 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -1215,13 +1215,6 @@ void write_neon_element64(TCGv_i64 src, int reg, int ele, MemOp memop) } } -static TCGv_ptr vfp_reg_ptr(bool dp, int reg) -{ - TCGv_ptr ret = tcg_temp_new_ptr(); - tcg_gen_addi_ptr(ret, cpu_env, vfp_reg_offset(dp, reg)); - return ret; -} - #define ARM_CP_RW_BIT (1 << 20) /* Include the Neon decoder */ From 8e30454fed1e45d709942836f2e299c8d9b00837 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 14:27:37 +0100 Subject: [PATCH 13/26] target/arm: Delete unused typedef MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The VFPGenFixPointFn typedef is unused; delete it. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé Message-id: 20210430132740.10391-11-peter.maydell@linaro.org --- target/arm/translate.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/target/arm/translate.c b/target/arm/translate.c index 095b5c509e..58cb3e8aaf 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -69,8 +69,6 @@ static const char * const regnames[] = /* Function prototypes for gen_ functions calling Neon helpers. */ typedef void NeonGenThreeOpEnvFn(TCGv_i32, TCGv_env, TCGv_i32, TCGv_i32, TCGv_i32); -/* Function prototypes for gen_ functions for fix point conversions */ -typedef void VFPGenFixPointFn(TCGv_i32, TCGv_i32, TCGv_i32, TCGv_ptr); /* initialize TCG globals. */ void arm_translate_init(void) From 9194a9cbc75e7af63eff26c87b995bdc52078ca6 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 14:27:38 +0100 Subject: [PATCH 14/26] target/arm: Move NeonGenThreeOpEnvFn typedef to translate.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move the NeonGenThreeOpEnvFn typedef to translate.h together with the other similar typedefs. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé Message-id: 20210430132740.10391-12-peter.maydell@linaro.org --- target/arm/translate.c | 3 --- target/arm/translate.h | 2 ++ 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/target/arm/translate.c b/target/arm/translate.c index 58cb3e8aaf..7ff0425c75 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -66,9 +66,6 @@ static const char * const regnames[] = { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "pc" }; -/* Function prototypes for gen_ functions calling Neon helpers. */ -typedef void NeonGenThreeOpEnvFn(TCGv_i32, TCGv_env, TCGv_i32, - TCGv_i32, TCGv_i32); /* initialize TCG globals. */ void arm_translate_init(void) diff --git a/target/arm/translate.h b/target/arm/translate.h index 8130a3be29..12c28b0d32 100644 --- a/target/arm/translate.h +++ b/target/arm/translate.h @@ -409,6 +409,8 @@ typedef void NeonGenOneOpFn(TCGv_i32, TCGv_i32); typedef void NeonGenOneOpEnvFn(TCGv_i32, TCGv_ptr, TCGv_i32); typedef void NeonGenTwoOpFn(TCGv_i32, TCGv_i32, TCGv_i32); typedef void NeonGenTwoOpEnvFn(TCGv_i32, TCGv_ptr, TCGv_i32, TCGv_i32); +typedef void NeonGenThreeOpEnvFn(TCGv_i32, TCGv_env, TCGv_i32, + TCGv_i32, TCGv_i32); typedef void NeonGenTwo64OpFn(TCGv_i64, TCGv_i64, TCGv_i64); typedef void NeonGenTwo64OpEnvFn(TCGv_i64, TCGv_ptr, TCGv_i64, TCGv_i64); typedef void NeonGenNarrowFn(TCGv_i32, TCGv_i64); From b5c8a457fab78e08d0ab5f9ca242b85b31c72c87 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 14:27:39 +0100 Subject: [PATCH 15/26] target/arm: Make functions used by translate-neon global MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make the remaining functions needed by the translate-neon code global. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-id: 20210430132740.10391-13-peter.maydell@linaro.org --- target/arm/translate-a32.h | 8 ++++++++ target/arm/translate.c | 10 ++-------- 2 files changed, 10 insertions(+), 8 deletions(-) diff --git a/target/arm/translate-a32.h b/target/arm/translate-a32.h index e767366f69..3ddb76b76b 100644 --- a/target/arm/translate-a32.h +++ b/target/arm/translate-a32.h @@ -39,6 +39,8 @@ void gen_set_pc_im(DisasContext *s, target_ulong val); void gen_lookup_tb(DisasContext *s); long vfp_reg_offset(bool dp, unsigned reg); long neon_full_reg_offset(unsigned reg); +long neon_element_offset(int reg, int element, MemOp memop); +void gen_rev16(TCGv_i32 dest, TCGv_i32 var); static inline TCGv_i32 load_cpu_offset(int offset) { @@ -130,4 +132,10 @@ DO_GEN_ST(32, MO_UL) /* Set NZCV flags from the high 4 bits of var. */ #define gen_set_nzcv(var) gen_set_cpsr(var, CPSR_NZCV) +/* Swap low and high halfwords. */ +static inline void gen_swap_half(TCGv_i32 dest, TCGv_i32 var) +{ + tcg_gen_rotri_i32(dest, var, 16); +} + #endif diff --git a/target/arm/translate.c b/target/arm/translate.c index 7ff0425c75..18de16ebd0 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -325,7 +325,7 @@ static void gen_smul_dual(TCGv_i32 a, TCGv_i32 b) } /* Byteswap each halfword. */ -static void gen_rev16(TCGv_i32 dest, TCGv_i32 var) +void gen_rev16(TCGv_i32 dest, TCGv_i32 var) { TCGv_i32 tmp = tcg_temp_new_i32(); TCGv_i32 mask = tcg_const_i32(0x00ff00ff); @@ -346,12 +346,6 @@ static void gen_revsh(TCGv_i32 dest, TCGv_i32 var) tcg_gen_ext16s_i32(dest, var); } -/* Swap low and high halfwords. */ -static void gen_swap_half(TCGv_i32 dest, TCGv_i32 var) -{ - tcg_gen_rotri_i32(dest, var, 16); -} - /* Dual 16-bit add. Result placed in t0 and t1 is marked as dead. tmp = (t0 ^ t1) & 0x8000; t0 &= ~0x8000; @@ -1104,7 +1098,7 @@ long neon_full_reg_offset(unsigned reg) * Return the offset of a 2**SIZE piece of a NEON register, at index ELE, * where 0 is the least significant end of the register. */ -static long neon_element_offset(int reg, int element, MemOp memop) +long neon_element_offset(int reg, int element, MemOp memop) { int element_size = 1 << (memop & MO_SIZE); int ofs = element * element_size; From 4800b852b8099187d2186c213626c298a60b775c Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 14:27:40 +0100 Subject: [PATCH 16/26] target/arm: Make translate-neon.c.inc its own compilation unit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Switch translate-neon.c.inc from being #included into translate.c to being its own compilation unit. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-id: 20210430132740.10391-14-peter.maydell@linaro.org --- target/arm/meson.build | 7 ++++--- target/arm/translate-a32.h | 3 +++ .../arm/{translate-neon.c.inc => translate-neon.c} | 12 +++++++----- target/arm/translate.c | 3 --- 4 files changed, 14 insertions(+), 11 deletions(-) rename target/arm/{translate-neon.c.inc => translate-neon.c} (99%) diff --git a/target/arm/meson.build b/target/arm/meson.build index f6360f33f1..5bfaf43b50 100644 --- a/target/arm/meson.build +++ b/target/arm/meson.build @@ -1,8 +1,8 @@ gen = [ decodetree.process('sve.decode', extra_args: '--decode=disas_sve'), - decodetree.process('neon-shared.decode', extra_args: '--static-decode=disas_neon_shared'), - decodetree.process('neon-dp.decode', extra_args: '--static-decode=disas_neon_dp'), - decodetree.process('neon-ls.decode', extra_args: '--static-decode=disas_neon_ls'), + decodetree.process('neon-shared.decode', extra_args: '--decode=disas_neon_shared'), + decodetree.process('neon-dp.decode', extra_args: '--decode=disas_neon_dp'), + decodetree.process('neon-ls.decode', extra_args: '--decode=disas_neon_ls'), decodetree.process('vfp.decode', extra_args: '--decode=disas_vfp'), decodetree.process('vfp-uncond.decode', extra_args: '--decode=disas_vfp_uncond'), decodetree.process('m-nocp.decode', extra_args: '--decode=disas_m_nocp'), @@ -27,6 +27,7 @@ arm_ss.add(files( 'tlb_helper.c', 'translate.c', 'translate-m-nocp.c', + 'translate-neon.c', 'translate-vfp.c', 'vec_helper.c', 'vfp_helper.c', diff --git a/target/arm/translate-a32.h b/target/arm/translate-a32.h index 3ddb76b76b..c997f4e321 100644 --- a/target/arm/translate-a32.h +++ b/target/arm/translate-a32.h @@ -24,6 +24,9 @@ bool disas_m_nocp(DisasContext *dc, uint32_t insn); bool disas_vfp(DisasContext *s, uint32_t insn); bool disas_vfp_uncond(DisasContext *s, uint32_t insn); +bool disas_neon_dp(DisasContext *s, uint32_t insn); +bool disas_neon_ls(DisasContext *s, uint32_t insn); +bool disas_neon_shared(DisasContext *s, uint32_t insn); void load_reg_var(DisasContext *s, TCGv_i32 var, int reg); void arm_gen_condlabel(DisasContext *s); diff --git a/target/arm/translate-neon.c.inc b/target/arm/translate-neon.c similarity index 99% rename from target/arm/translate-neon.c.inc rename to target/arm/translate-neon.c index 73bf376ed3..658bd275da 100644 --- a/target/arm/translate-neon.c.inc +++ b/target/arm/translate-neon.c @@ -20,11 +20,13 @@ * License along with this library; if not, see . */ -/* - * This file is intended to be included from translate.c; it uses - * some macros and definitions provided by that file. - * It might be possible to convert it to a standalone .c file eventually. - */ +#include "qemu/osdep.h" +#include "tcg/tcg-op.h" +#include "tcg/tcg-op-gvec.h" +#include "exec/exec-all.h" +#include "exec/gen-icount.h" +#include "translate.h" +#include "translate-a32.h" static inline int plus1(DisasContext *s, int x) { diff --git a/target/arm/translate.c b/target/arm/translate.c index 18de16ebd0..455352bcf6 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -1206,9 +1206,6 @@ void write_neon_element64(TCGv_i64 src, int reg, int ele, MemOp memop) #define ARM_CP_RW_BIT (1 << 20) -/* Include the Neon decoder */ -#include "translate-neon.c.inc" - static inline void iwmmxt_load_reg(TCGv_i64 var, int reg) { tcg_gen_ld_i64(var, cpu_env, offsetof(CPUARMState, iwmmxt.regs[reg])); From 5b2c8af89b82a671137a2765b09ad24d0653661c Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 17:22:12 +0100 Subject: [PATCH 17/26] target/arm: Make WFI a NOP for userspace emulators The WFI insn is not system-mode only, though it doesn't usually make a huge amount of sense for userspace code to execute it. Currently if you try it in qemu-arm then the helper function will raise an EXCP_HLT exception, which is not covered by the switch in cpu_loop() and results in an abort: qemu: unhandled CPU exception 0x10001 - aborting R00=00000001 R01=408003e4 R02=408003ec R03=000102ec R04=00010a28 R05=00010158 R06=00087460 R07=00010158 R08=00000000 R09=00000000 R10=00085b7c R11=408002a4 R12=408002b8 R13=408002a0 R14=0001057c R15=000102f8 PSR=60000010 -ZC- A usr32 qemu:handle_cpu_signal received signal outside vCPU context @ pc=0x7fcbfa4f0a12 Make the WFI helper function return immediately in the usermode emulator. This turns WFI into a NOP, which is OK because: * architecturally "WFI is a NOP" is a permitted implementation * aarch64 Linux kernels use the SCTLR_EL1.nTWI bit to trap userspace WFI and NOP it (though aarch32 kernels currently just let WFI do whatever it would do) We could in theory make the translate.c code special case user-mode emulation and NOP the insn entirely rather than making the helper do nothing, but because no real world code will be trying to execute WFI we don't care about efficiency and the helper provides a single place where we can make the change rather than having to touch multiple places in translate.c and translate-a64.c. Fixes: https://bugs.launchpad.net/qemu/+bug/1926759 Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20210430162212.825-1-peter.maydell@linaro.org --- target/arm/op_helper.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/target/arm/op_helper.c b/target/arm/op_helper.c index 78b831f181..efcb600992 100644 --- a/target/arm/op_helper.c +++ b/target/arm/op_helper.c @@ -228,6 +228,7 @@ void HELPER(setend)(CPUARMState *env) arm_rebuild_hflags(env); } +#ifndef CONFIG_USER_ONLY /* Function checks whether WFx (WFI/WFE) instructions are set up to be trapped. * The function returns the target EL (1-3) if the instruction is to be trapped; * otherwise it returns 0 indicating it is not trapped. @@ -282,9 +283,21 @@ static inline int check_wfx_trap(CPUARMState *env, bool is_wfe) return 0; } +#endif void HELPER(wfi)(CPUARMState *env, uint32_t insn_len) { +#ifdef CONFIG_USER_ONLY + /* + * WFI in the user-mode emulator is technically permitted but not + * something any real-world code would do. AArch64 Linux kernels + * trap it via SCTRL_EL1.nTWI and make it an (expensive) NOP; + * AArch32 kernels don't trap it so it will delay a bit. + * For QEMU, make it NOP here, because trying to raise EXCP_HLT + * would trigger an abort. + */ + return; +#else CPUState *cs = env_cpu(env); int target_el = check_wfx_trap(env, false); @@ -309,6 +322,7 @@ void HELPER(wfi)(CPUARMState *env, uint32_t insn_len) cs->exception_index = EXCP_HLT; cs->halted = 1; cpu_loop_exit(cs); +#endif } void HELPER(wfe)(CPUARMState *env) From f16a3bf81b8b01c53144167f6cc12fb126028972 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 30 Apr 2021 23:23:48 +0100 Subject: [PATCH 18/26] hw/sd/omap_mmc: Use device_cold_reset() instead of device_legacy_reset() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The omap_mmc_reset() function resets its SD card via device_legacy_reset(). We know that the SD card does not have a qbus of its own, so the new device_cold_reset() function (which resets both the device and its child buses) is equivalent here to device_legacy_reset() and we can just switch to the new API. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Message-id: 20210430222348.8514-1-peter.maydell@linaro.org --- hw/sd/omap_mmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/sd/omap_mmc.c b/hw/sd/omap_mmc.c index 1f946908fe..b67def6381 100644 --- a/hw/sd/omap_mmc.c +++ b/hw/sd/omap_mmc.c @@ -318,7 +318,7 @@ void omap_mmc_reset(struct omap_mmc_s *host) * into any bus, and we must reset it manually. When omap_mmc is * QOMified this must move into the QOM reset function. */ - device_legacy_reset(DEVICE(host->card)); + device_cold_reset(DEVICE(host->card)); } static uint64_t omap_mmc_read(void *opaque, hwaddr offset, From 415a9fb880c6bf383d649643a4ce65ea3bc9b084 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 16 Apr 2021 14:55:41 +0100 Subject: [PATCH 19/26] osdep: Make os-win32.h and os-posix.h handle 'extern "C"' themselves Both os-win32.h and os-posix.h include system header files. Instead of having osdep.h include them inside its 'extern "C"' block, make these headers handle that themselves, so that we don't include the system headers inside 'extern "C"'. This doesn't fix any current problems, but it's conceptually the right way to handle system headers. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- include/qemu/osdep.h | 8 ++++---- include/sysemu/os-posix.h | 8 ++++++++ include/sysemu/os-win32.h | 8 ++++++++ 3 files changed, 20 insertions(+), 4 deletions(-) diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h index cb2a07e472..4c6f2390be 100644 --- a/include/qemu/osdep.h +++ b/include/qemu/osdep.h @@ -131,10 +131,6 @@ QEMU_EXTERN_C int daemon(int, int); */ #include "glib-compat.h" -#ifdef __cplusplus -extern "C" { -#endif - #ifdef _WIN32 #include "sysemu/os-win32.h" #endif @@ -143,6 +139,10 @@ extern "C" { #include "sysemu/os-posix.h" #endif +#ifdef __cplusplus +extern "C" { +#endif + #include "qemu/typedefs.h" /* diff --git a/include/sysemu/os-posix.h b/include/sysemu/os-posix.h index 629c8c648b..2edf33658a 100644 --- a/include/sysemu/os-posix.h +++ b/include/sysemu/os-posix.h @@ -38,6 +38,10 @@ #include #endif +#ifdef __cplusplus +extern "C" { +#endif + void os_set_line_buffering(void); void os_set_proc_name(const char *s); void os_setup_signal_handling(void); @@ -92,4 +96,8 @@ static inline void qemu_funlockfile(FILE *f) funlockfile(f); } +#ifdef __cplusplus +} +#endif + #endif diff --git a/include/sysemu/os-win32.h b/include/sysemu/os-win32.h index 5346d51e89..43f569b5c2 100644 --- a/include/sysemu/os-win32.h +++ b/include/sysemu/os-win32.h @@ -30,6 +30,10 @@ #include #include +#ifdef __cplusplus +extern "C" { +#endif + #if defined(_WIN64) /* On w64, setjmp is implemented by _setjmp which needs a second parameter. * If this parameter is NULL, longjump does no stack unwinding. @@ -194,4 +198,8 @@ ssize_t qemu_recv_wrap(int sockfd, void *buf, size_t len, int flags); ssize_t qemu_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags, struct sockaddr *addr, socklen_t *addrlen); +#ifdef __cplusplus +} +#endif + #endif From b30a8c241fe22b9cbd0ad015809fc92688fee4ff Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 16 Apr 2021 14:55:42 +0100 Subject: [PATCH 20/26] include/qemu/bswap.h: Handle being included outside extern "C" block Make bswap.h handle being included outside an 'extern "C"' block: all system headers are included first, then all declarations are put inside an 'extern "C"' block. This requires a little rearrangement as currently we have an ifdef ladder that has some system includes and some local declarations or definitions, and we need to separate those out. We want to do this because dis-asm.h includes bswap.h, dis-asm.h may need to be included from C++ files, and system headers should not be included within 'extern "C"' blocks. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- include/qemu/bswap.h | 26 ++++++++++++++++++++++---- 1 file changed, 22 insertions(+), 4 deletions(-) diff --git a/include/qemu/bswap.h b/include/qemu/bswap.h index 4aaf992b5d..2d3bb8bbed 100644 --- a/include/qemu/bswap.h +++ b/include/qemu/bswap.h @@ -1,8 +1,6 @@ #ifndef BSWAP_H #define BSWAP_H -#include "fpu/softfloat-types.h" - #ifdef CONFIG_MACHINE_BSWAP_H # include # include @@ -12,7 +10,18 @@ # include #elif defined(CONFIG_BYTESWAP_H) # include +#define BSWAP_FROM_BYTESWAP +# else +#define BSWAP_FROM_FALLBACKS +#endif /* ! CONFIG_MACHINE_BSWAP_H */ +#ifdef __cplusplus +extern "C" { +#endif + +#include "fpu/softfloat-types.h" + +#ifdef BSWAP_FROM_BYTESWAP static inline uint16_t bswap16(uint16_t x) { return bswap_16(x); @@ -27,7 +36,9 @@ static inline uint64_t bswap64(uint64_t x) { return bswap_64(x); } -# else +#endif + +#ifdef BSWAP_FROM_FALLBACKS static inline uint16_t bswap16(uint16_t x) { return (((x & 0x00ff) << 8) | @@ -53,7 +64,10 @@ static inline uint64_t bswap64(uint64_t x) ((x & 0x00ff000000000000ULL) >> 40) | ((x & 0xff00000000000000ULL) >> 56)); } -#endif /* ! CONFIG_MACHINE_BSWAP_H */ +#endif + +#undef BSWAP_FROM_BYTESWAP +#undef BSWAP_FROM_FALLBACKS static inline void bswap16s(uint16_t *s) { @@ -494,4 +508,8 @@ DO_STN_LDN_P(be) #undef le_bswaps #undef be_bswaps +#ifdef __cplusplus +} +#endif + #endif /* BSWAP_H */ From 2c316f9af4752369ac86be85cd8846d6365e4e68 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 16 Apr 2021 14:55:43 +0100 Subject: [PATCH 21/26] include/disas/dis-asm.h: Handle being included outside 'extern "C"' Make dis-asm.h handle being included outside an 'extern "C"' block; this allows us to remove the 'extern "C"' blocks that our two C++ files that include it are using. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- disas/arm-a64.cc | 2 -- disas/nanomips.cpp | 2 -- include/disas/dis-asm.h | 12 ++++++++++-- 3 files changed, 10 insertions(+), 6 deletions(-) diff --git a/disas/arm-a64.cc b/disas/arm-a64.cc index 27613d4b25..a1402a2e07 100644 --- a/disas/arm-a64.cc +++ b/disas/arm-a64.cc @@ -18,9 +18,7 @@ */ #include "qemu/osdep.h" -extern "C" { #include "disas/dis-asm.h" -} #include "vixl/a64/disasm-a64.h" diff --git a/disas/nanomips.cpp b/disas/nanomips.cpp index 8ddef897f0..9be8df75dd 100644 --- a/disas/nanomips.cpp +++ b/disas/nanomips.cpp @@ -28,9 +28,7 @@ */ #include "qemu/osdep.h" -extern "C" { #include "disas/dis-asm.h" -} #include #include diff --git a/include/disas/dis-asm.h b/include/disas/dis-asm.h index 13fa1edd41..4701445e80 100644 --- a/include/disas/dis-asm.h +++ b/include/disas/dis-asm.h @@ -9,6 +9,12 @@ #ifndef DISAS_DIS_ASM_H #define DISAS_DIS_ASM_H +#include "qemu/bswap.h" + +#ifdef __cplusplus +extern "C" { +#endif + typedef void *PTR; typedef uint64_t bfd_vma; typedef int64_t bfd_signed_vma; @@ -479,8 +485,6 @@ bool cap_disas_plugin(disassemble_info *info, uint64_t pc, size_t size); /* from libbfd */ -#include "qemu/bswap.h" - static inline bfd_vma bfd_getl64(const bfd_byte *addr) { return ldq_le_p(addr); @@ -508,4 +512,8 @@ static inline bfd_vma bfd_getb16(const bfd_byte *addr) typedef bool bfd_boolean; +#ifdef __cplusplus +} +#endif + #endif /* DISAS_DIS_ASM_H */ From f463684fbf859e39fcdbd0327a8bcbe8fbcbfab4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Thu, 8 Apr 2021 00:56:08 +0200 Subject: [PATCH 22/26] hw/arm/imx25_pdk: Fix error message for invalid RAM size MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The i.MX25 PDK board has 2 banks for SDRAM, each can address up to 256 MiB. So the total RAM usable for this board is 512M. When we ask for more we get a misleading error message: $ qemu-system-arm -M imx25-pdk -m 513M qemu-system-arm: Invalid RAM size, should be 128 MiB Update the error message to better match the reality: $ qemu-system-arm -M imx25-pdk -m 513M qemu-system-arm: RAM size more than 512 MiB is not supported Fixes: bf350daae02 ("arm/imx25_pdk: drop RAM size fixup") Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Reviewed-by: Igor Mammedov Message-id: 20210407225608.1882855-1-f4bug@amsat.org Signed-off-by: Peter Maydell --- hw/arm/imx25_pdk.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/hw/arm/imx25_pdk.c b/hw/arm/imx25_pdk.c index 11426e5ec0..bd16acd4d9 100644 --- a/hw/arm/imx25_pdk.c +++ b/hw/arm/imx25_pdk.c @@ -65,7 +65,6 @@ static struct arm_boot_info imx25_pdk_binfo; static void imx25_pdk_init(MachineState *machine) { - MachineClass *mc = MACHINE_GET_CLASS(machine); IMX25PDK *s = g_new0(IMX25PDK, 1); unsigned int ram_size; unsigned int alias_offset; @@ -77,8 +76,8 @@ static void imx25_pdk_init(MachineState *machine) /* We need to initialize our memory */ if (machine->ram_size > (FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE)) { - char *sz = size_to_str(mc->default_ram_size); - error_report("Invalid RAM size, should be %s", sz); + char *sz = size_to_str(FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE); + error_report("RAM size more than %s is not supported", sz); g_free(sz); exit(EXIT_FAILURE); } From c52c266d24b10f1482602e6d22938d9e21f874f5 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Tue, 4 May 2021 13:09:10 +0100 Subject: [PATCH 23/26] hw/misc/mps2-scc: Add "QEMU interface" comment The MPS2 SCC device doesn't have any documentation of its properties; add a "QEMU interface" format comment describing them. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20210504120912.23094-2-peter.maydell@linaro.org --- include/hw/misc/mps2-scc.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/hw/misc/mps2-scc.h b/include/hw/misc/mps2-scc.h index 49d070616a..ea261ea30d 100644 --- a/include/hw/misc/mps2-scc.h +++ b/include/hw/misc/mps2-scc.h @@ -9,6 +9,18 @@ * (at your option) any later version. */ +/* + * This is a model of the Serial Communication Controller (SCC) + * block found in most MPS FPGA images. + * + * QEMU interface: + * + sysbus MMIO region 0: the register bank + * + QOM property "scc-cfg4": value of the read-only CFG4 register + * + QOM property "scc-aid": value of the read-only SCC_AID register + * + QOM property "scc-id": value of the read-only SCC_ID register + * + QOM property array "oscclk": reset values of the OSCCLK registers + * (which are accessed via the SYS_CFG channel provided by this device) + */ #ifndef MPS2_SCC_H #define MPS2_SCC_H From 5bddf92e689c0a3da57f4fd17b83d4eb1e436b80 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Tue, 4 May 2021 13:09:11 +0100 Subject: [PATCH 24/26] hw/misc/mps2-scc: Support using CFG0 bit 0 for remapping MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On some boards, SCC config register CFG0 bit 0 controls whether parts of the board memory map are remapped. Support this with: * a device property scc-cfg0 so the board can specify the initial value of the CFG0 register * an outbound GPIO line which tracks bit 0 and which the board can wire up to provide the remapping Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé Message-id: 20210504120912.23094-3-peter.maydell@linaro.org --- hw/misc/mps2-scc.c | 13 ++++++++++--- include/hw/misc/mps2-scc.h | 9 +++++++++ 2 files changed, 19 insertions(+), 3 deletions(-) diff --git a/hw/misc/mps2-scc.c b/hw/misc/mps2-scc.c index c56aca86ad..b3b42a792c 100644 --- a/hw/misc/mps2-scc.c +++ b/hw/misc/mps2-scc.c @@ -23,6 +23,7 @@ #include "qemu/bitops.h" #include "trace.h" #include "hw/sysbus.h" +#include "hw/irq.h" #include "migration/vmstate.h" #include "hw/registerfields.h" #include "hw/misc/mps2-scc.h" @@ -186,10 +187,13 @@ static void mps2_scc_write(void *opaque, hwaddr offset, uint64_t value, switch (offset) { case A_CFG0: /* - * TODO on some boards bit 0 controls RAM remapping; - * on others bit 1 is CPU_WAIT. + * On some boards bit 0 controls board-specific remapping; + * we always reflect bit 0 in the 'remap' GPIO output line, + * and let the board wire it up or not as it chooses. + * TODO on some boards bit 1 is CPU_WAIT. */ s->cfg0 = value; + qemu_set_irq(s->remap, s->cfg0 & 1); break; case A_CFG1: s->cfg1 = value; @@ -283,7 +287,7 @@ static void mps2_scc_reset(DeviceState *dev) int i; trace_mps2_scc_reset(); - s->cfg0 = 0; + s->cfg0 = s->cfg0_reset; s->cfg1 = 0; s->cfg2 = 0; s->cfg5 = 0; @@ -308,6 +312,7 @@ static void mps2_scc_init(Object *obj) memory_region_init_io(&s->iomem, obj, &mps2_scc_ops, s, "mps2-scc", 0x1000); sysbus_init_mmio(sbd, &s->iomem); + qdev_init_gpio_out_named(DEVICE(obj), &s->remap, "remap", 1); } static void mps2_scc_realize(DeviceState *dev, Error **errp) @@ -353,6 +358,8 @@ static Property mps2_scc_properties[] = { DEFINE_PROP_UINT32("scc-cfg4", MPS2SCC, cfg4, 0), DEFINE_PROP_UINT32("scc-aid", MPS2SCC, aid, 0), DEFINE_PROP_UINT32("scc-id", MPS2SCC, id, 0), + /* Reset value for CFG0 register */ + DEFINE_PROP_UINT32("scc-cfg0", MPS2SCC, cfg0_reset, 0), /* * These are the initial settings for the source clocks on the board. * In hardware they can be configured via a config file read by the diff --git a/include/hw/misc/mps2-scc.h b/include/hw/misc/mps2-scc.h index ea261ea30d..3b2d13ac9c 100644 --- a/include/hw/misc/mps2-scc.h +++ b/include/hw/misc/mps2-scc.h @@ -18,8 +18,14 @@ * + QOM property "scc-cfg4": value of the read-only CFG4 register * + QOM property "scc-aid": value of the read-only SCC_AID register * + QOM property "scc-id": value of the read-only SCC_ID register + * + QOM property "scc-cfg0": reset value of the CFG0 register * + QOM property array "oscclk": reset values of the OSCCLK registers * (which are accessed via the SYS_CFG channel provided by this device) + * + named GPIO output "remap": this tracks the value of CFG0 register + * bit 0. Boards where this bit controls memory remapping should + * connect this GPIO line to a function performing that mapping. + * Boards where bit 0 has no special function should leave the GPIO + * output disconnected. */ #ifndef MPS2_SCC_H #define MPS2_SCC_H @@ -55,6 +61,9 @@ struct MPS2SCC { uint32_t num_oscclk; uint32_t *oscclk; uint32_t *oscclk_reset; + uint32_t cfg0_reset; + + qemu_irq remap; }; #endif From f1dfab0d9b77b8649d60ded3d96870f88d0baccd Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Tue, 4 May 2021 13:09:12 +0100 Subject: [PATCH 25/26] hw/arm/mps2-tz: Implement AN524 memory remapping via machine property MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The AN524 FPGA image supports two memory maps, which differ in where the QSPI and BRAM are. In the default map, the BRAM is at 0x0000_0000, and the QSPI at 0x2800_0000. In the second map, they are the other way around. In hardware, the initial mapping can be selected by the user by writing either "REMAP: BRAM" (the default) or "REMAP: QSPI" in the board configuration file. The board config file is acted on by the "Motherboard Configuration Controller", which is an entirely separate microcontroller on the dev board but outside the FPGA. The guest can also dynamically change the mapping via the SCC CFG_REG0 register. Implement this functionality for QEMU, using a machine property "remap" with valid values "BRAM" and "QSPI" to allow the user to set the initial mapping, in the same way they can on the FPGA, and wiring up the bit from the SCC register to also switch the mapping. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé Message-id: 20210504120912.23094-4-peter.maydell@linaro.org --- docs/system/arm/mps2.rst | 10 ++++ hw/arm/mps2-tz.c | 108 ++++++++++++++++++++++++++++++++++++++- 2 files changed, 117 insertions(+), 1 deletion(-) diff --git a/docs/system/arm/mps2.rst b/docs/system/arm/mps2.rst index f83b151787..8a75beb3a0 100644 --- a/docs/system/arm/mps2.rst +++ b/docs/system/arm/mps2.rst @@ -45,3 +45,13 @@ Differences between QEMU and real hardware: flash, but only as simple ROM, so attempting to rewrite the flash from the guest will fail - QEMU does not model the USB controller in MPS3 boards + +Machine-specific options +"""""""""""""""""""""""" + +The following machine-specific options are supported: + +remap + Supported for ``mps3-an524`` only. + Set ``BRAM``/``QSPI`` to select the initial memory mapping. The + default is ``BRAM``. diff --git a/hw/arm/mps2-tz.c b/hw/arm/mps2-tz.c index 25016e464d..70aa31a7f6 100644 --- a/hw/arm/mps2-tz.c +++ b/hw/arm/mps2-tz.c @@ -55,6 +55,7 @@ #include "hw/boards.h" #include "exec/address-spaces.h" #include "sysemu/sysemu.h" +#include "sysemu/reset.h" #include "hw/misc/unimp.h" #include "hw/char/cmsdk-apb-uart.h" #include "hw/timer/cmsdk-apb-timer.h" @@ -72,6 +73,7 @@ #include "hw/core/split-irq.h" #include "hw/qdev-clock.h" #include "qom/object.h" +#include "hw/irq.h" #define MPS2TZ_NUMIRQ_MAX 96 #define MPS2TZ_RAM_MAX 5 @@ -153,6 +155,9 @@ struct MPS2TZMachineState { SplitIRQ cpu_irq_splitter[MPS2TZ_NUMIRQ_MAX]; Clock *sysclk; Clock *s32kclk; + + bool remap; + qemu_irq remap_irq; }; #define TYPE_MPS2TZ_MACHINE "mps2tz" @@ -228,6 +233,10 @@ static const RAMInfo an505_raminfo[] = { { }, }; +/* + * Note that the addresses and MPC numbering here should match up + * with those used in remap_memory(), which can swap the BRAM and QSPI. + */ static const RAMInfo an524_raminfo[] = { { .name = "bram", .base = 0x00000000, @@ -457,6 +466,7 @@ static MemoryRegion *make_scc(MPS2TZMachineState *mms, void *opaque, object_initialize_child(OBJECT(mms), "scc", scc, TYPE_MPS2_SCC); sccdev = DEVICE(scc); + qdev_prop_set_uint32(sccdev, "scc-cfg0", mms->remap ? 1 : 0); qdev_prop_set_uint32(sccdev, "scc-cfg4", 0x2); qdev_prop_set_uint32(sccdev, "scc-aid", 0x00200008); qdev_prop_set_uint32(sccdev, "scc-id", mmc->scc_id); @@ -573,6 +583,52 @@ static MemoryRegion *make_mpc(MPS2TZMachineState *mms, void *opaque, return sysbus_mmio_get_region(SYS_BUS_DEVICE(mpc), 0); } +static hwaddr boot_mem_base(MPS2TZMachineState *mms) +{ + /* + * Return the canonical address of the block which will be mapped + * at address 0x0 (i.e. where the vector table is). + * This is usually 0, but if the AN524 alternate memory map is + * enabled it will be the base address of the QSPI block. + */ + return mms->remap ? 0x28000000 : 0; +} + +static void remap_memory(MPS2TZMachineState *mms, int map) +{ + /* + * Remap the memory for the AN524. 'map' is the value of + * SCC CFG_REG0 bit 0, i.e. 0 for the default map and 1 + * for the "option 1" mapping where QSPI is at address 0. + * + * Effectively we need to swap around the "upstream" ends of + * MPC 0 and MPC 1. + */ + MPS2TZMachineClass *mmc = MPS2TZ_MACHINE_GET_CLASS(mms); + int i; + + if (mmc->fpga_type != FPGA_AN524) { + return; + } + + memory_region_transaction_begin(); + for (i = 0; i < 2; i++) { + TZMPC *mpc = &mms->mpc[i]; + MemoryRegion *upstream = sysbus_mmio_get_region(SYS_BUS_DEVICE(mpc), 1); + hwaddr addr = (i ^ map) ? 0x28000000 : 0; + + memory_region_set_address(upstream, addr); + } + memory_region_transaction_commit(); +} + +static void remap_irq_fn(void *opaque, int n, int level) +{ + MPS2TZMachineState *mms = opaque; + + remap_memory(mms, level); +} + static MemoryRegion *make_dma(MPS2TZMachineState *mms, void *opaque, const char *name, hwaddr size, const int *irqs) @@ -711,7 +767,7 @@ static uint32_t boot_ram_size(MPS2TZMachineState *mms) MPS2TZMachineClass *mmc = MPS2TZ_MACHINE_GET_CLASS(mms); for (p = mmc->raminfo; p->name; p++) { - if (p->base == 0) { + if (p->base == boot_mem_base(mms)) { return p->size; } } @@ -1095,6 +1151,16 @@ static void mps2tz_common_init(MachineState *machine) create_non_mpc_ram(mms); + if (mmc->fpga_type == FPGA_AN524) { + /* + * Connect the line from the SCC so that we can remap when the + * guest updates that register. + */ + mms->remap_irq = qemu_allocate_irq(remap_irq_fn, mms, 0); + qdev_connect_gpio_out_named(DEVICE(&mms->scc), "remap", 0, + mms->remap_irq); + } + armv7m_load_kernel(ARM_CPU(first_cpu), machine->kernel_filename, boot_ram_size(mms)); } @@ -1117,12 +1183,47 @@ static void mps2_tz_idau_check(IDAUInterface *ii, uint32_t address, *iregion = region; } +static char *mps2_get_remap(Object *obj, Error **errp) +{ + MPS2TZMachineState *mms = MPS2TZ_MACHINE(obj); + const char *val = mms->remap ? "QSPI" : "BRAM"; + return g_strdup(val); +} + +static void mps2_set_remap(Object *obj, const char *value, Error **errp) +{ + MPS2TZMachineState *mms = MPS2TZ_MACHINE(obj); + + if (!strcmp(value, "BRAM")) { + mms->remap = false; + } else if (!strcmp(value, "QSPI")) { + mms->remap = true; + } else { + error_setg(errp, "Invalid remap value"); + error_append_hint(errp, "Valid values are BRAM and QSPI.\n"); + } +} + +static void mps2_machine_reset(MachineState *machine) +{ + MPS2TZMachineState *mms = MPS2TZ_MACHINE(machine); + + /* + * Set the initial memory mapping before triggering the reset of + * the rest of the system, so that the guest image loader and CPU + * reset see the correct mapping. + */ + remap_memory(mms, mms->remap); + qemu_devices_reset(); +} + static void mps2tz_class_init(ObjectClass *oc, void *data) { MachineClass *mc = MACHINE_CLASS(oc); IDAUInterfaceClass *iic = IDAU_INTERFACE_CLASS(oc); mc->init = mps2tz_common_init; + mc->reset = mps2_machine_reset; iic->check = mps2_tz_idau_check; } @@ -1225,6 +1326,11 @@ static void mps3tz_an524_class_init(ObjectClass *oc, void *data) mmc->raminfo = an524_raminfo; mmc->armsse_type = TYPE_SSE200; mps2tz_set_default_ram_info(mmc); + + object_class_property_add_str(oc, "remap", mps2_get_remap, mps2_set_remap); + object_class_property_set_description(oc, "remap", + "Set memory mapping. Valid values " + "are BRAM (default) and QSPI."); } static void mps3tz_an547_class_init(ObjectClass *oc, void *data) From c3080fbdaa381012666428fef2e5f7ce422ecfee Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Tue, 4 May 2021 05:41:40 -0700 Subject: [PATCH 26/26] hw/arm/xlnx: Fix PHY address for xilinx-zynq-a9 Commit dfc388797cc4 ("hw/arm: xlnx: Set all boards' GEM 'phy-addr' property value to 23") configured the PHY address for xilinx-zynq-a9 to 23. When trying to boot xilinx-zynq-a9 with zynq-zc702.dtb or zynq-zc706.dtb, this results in the following error message when trying to use the Ethernet interface. macb e000b000.ethernet eth0: Could not attach PHY (-19) The devicetree files for ZC702 and ZC706 configure PHY address 7. The documentation for the ZC702 and ZC706 evaluation boards suggest that the PHY address is 7, not 23. Other boards use PHY address 0, 1, 3, or 7. I was unable to find a documentation or a devicetree file suggesting or using PHY address 23. The Ethernet interface starts working with zynq-zc702.dtb and zynq-zc706.dtb when setting the PHY address to 7, so let's use it. Cc: Bin Meng Signed-off-by: Guenter Roeck Reviewed-by: Bin Meng Acked-by: Edgar E. Iglesias Message-id: 20210504124140.1100346-1-linux@roeck-us.net Signed-off-by: Peter Maydell --- hw/arm/xilinx_zynq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/arm/xilinx_zynq.c b/hw/arm/xilinx_zynq.c index 85f25d15db..81af32dc42 100644 --- a/hw/arm/xilinx_zynq.c +++ b/hw/arm/xilinx_zynq.c @@ -118,7 +118,7 @@ static void gem_init(NICInfo *nd, uint32_t base, qemu_irq irq) qemu_check_nic_model(nd, TYPE_CADENCE_GEM); qdev_set_nic_properties(dev, nd); } - object_property_set_int(OBJECT(dev), "phy-addr", 23, &error_abort); + object_property_set_int(OBJECT(dev), "phy-addr", 7, &error_abort); s = SYS_BUS_DEVICE(dev); sysbus_realize_and_unref(s, &error_fatal); sysbus_mmio_map(s, 0, base);