From: Warner Losh <imp@bsdimp.com>
To: qemu-devel@nongnu.org
Cc: Stacey Son <sson@FreeBSD.org>,
qemu-trivial@nongnu.org, Michael Tokarev <mjt@tls.msk.ru>,
Richard Henderson <richard.henderson@linaro.org>,
Philippe Mathieu-Daude <f4bug@amsat.org>,
Laurent Vivier <laurent@vivier.eu>,
Kyle Evans <kevans@FreeBSD.org>, Warner Losh <imp@bsdimp.com>
Subject: [PATCH v4 26/36] bsd-user/arm/target_arch_elf.h: arm get hwcap
Date: Thu, 4 Nov 2021 21:19:07 -0600 [thread overview]
Message-ID: <20211105031917.87837-27-imp@bsdimp.com> (raw)
In-Reply-To: <20211105031917.87837-1-imp@bsdimp.com>
Implement get_elf_hwcap to get the first word of hardware capabilities.
Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
bsd-user/arm/target_arch_elf.h | 72 +++++++++++++++++++++++++++++++++-
1 file changed, 71 insertions(+), 1 deletion(-)
diff --git a/bsd-user/arm/target_arch_elf.h b/bsd-user/arm/target_arch_elf.h
index 15b5c66511..02d25b8926 100644
--- a/bsd-user/arm/target_arch_elf.h
+++ b/bsd-user/arm/target_arch_elf.h
@@ -31,6 +31,76 @@
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
-#define ELF_HWCAP 0
+#define ELF_HWCAP get_elf_hwcap()
+
+#define GET_FEATURE(feat, hwcap) \
+ do { if (arm_feature(&cpu->env, feat)) { hwcaps |= hwcap; } } while (0)
+
+#define GET_FEATURE_ID(feat, hwcap) \
+ do { if (cpu_isar_feature(feat, cpu)) { hwcaps |= hwcap; } } while (0)
+
+enum {
+ ARM_HWCAP_ARM_SWP = 1 << 0,
+ ARM_HWCAP_ARM_HALF = 1 << 1,
+ ARM_HWCAP_ARM_THUMB = 1 << 2,
+ ARM_HWCAP_ARM_26BIT = 1 << 3,
+ ARM_HWCAP_ARM_FAST_MULT = 1 << 4,
+ ARM_HWCAP_ARM_FPA = 1 << 5,
+ ARM_HWCAP_ARM_VFP = 1 << 6,
+ ARM_HWCAP_ARM_EDSP = 1 << 7,
+ ARM_HWCAP_ARM_JAVA = 1 << 8,
+ ARM_HWCAP_ARM_IWMMXT = 1 << 9,
+ ARM_HWCAP_ARM_CRUNCH = 1 << 10,
+ ARM_HWCAP_ARM_THUMBEE = 1 << 11,
+ ARM_HWCAP_ARM_NEON = 1 << 12,
+ ARM_HWCAP_ARM_VFPv3 = 1 << 13,
+ ARM_HWCAP_ARM_VFPv3D16 = 1 << 14,
+ ARM_HWCAP_ARM_TLS = 1 << 15,
+ ARM_HWCAP_ARM_VFPv4 = 1 << 16,
+ ARM_HWCAP_ARM_IDIVA = 1 << 17,
+ ARM_HWCAP_ARM_IDIVT = 1 << 18,
+ ARM_HWCAP_ARM_VFPD32 = 1 << 19,
+ ARM_HWCAP_ARM_LPAE = 1 << 20,
+ ARM_HWCAP_ARM_EVTSTRM = 1 << 21,
+};
+
+static uint32_t get_elf_hwcap(void)
+{
+ ARMCPU *cpu = ARM_CPU(thread_cpu);
+ uint32_t hwcaps = 0;
+
+ hwcaps |= ARM_HWCAP_ARM_SWP;
+ hwcaps |= ARM_HWCAP_ARM_HALF;
+ hwcaps |= ARM_HWCAP_ARM_THUMB;
+ hwcaps |= ARM_HWCAP_ARM_FAST_MULT;
+
+ /* probe for the extra features */
+ /* EDSP is in v5TE and above */
+ GET_FEATURE(ARM_FEATURE_V5, ARM_HWCAP_ARM_EDSP);
+ GET_FEATURE(ARM_FEATURE_IWMMXT, ARM_HWCAP_ARM_IWMMXT);
+ GET_FEATURE(ARM_FEATURE_THUMB2EE, ARM_HWCAP_ARM_THUMBEE);
+ GET_FEATURE(ARM_FEATURE_NEON, ARM_HWCAP_ARM_NEON);
+ GET_FEATURE(ARM_FEATURE_V6K, ARM_HWCAP_ARM_TLS);
+ GET_FEATURE(ARM_FEATURE_LPAE, ARM_HWCAP_ARM_LPAE);
+ GET_FEATURE_ID(aa32_arm_div, ARM_HWCAP_ARM_IDIVA);
+ GET_FEATURE_ID(aa32_thumb_div, ARM_HWCAP_ARM_IDIVT);
+ GET_FEATURE_ID(aa32_vfp, ARM_HWCAP_ARM_VFP);
+
+ if (cpu_isar_feature(aa32_fpsp_v3, cpu) ||
+ cpu_isar_feature(aa32_fpdp_v3, cpu)) {
+ hwcaps |= ARM_HWCAP_ARM_VFPv3;
+ if (cpu_isar_feature(aa32_simd_r32, cpu)) {
+ hwcaps |= ARM_HWCAP_ARM_VFPD32;
+ } else {
+ hwcaps |= ARM_HWCAP_ARM_VFPv3D16;
+ }
+ }
+ GET_FEATURE_ID(aa32_simdfmac, ARM_HWCAP_ARM_VFPv4);
+
+ return hwcaps;
+}
+
+#undef GET_FEATURE
+#undef GET_FEATURE_ID
#endif /* _TARGET_ARCH_ELF_H_ */
--
2.33.0
next prev parent reply other threads:[~2021-11-05 3:59 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-05 3:18 [PATCH v4 00/36] bsd-user: arm (32-bit) support Warner Losh
2021-11-05 3:18 ` [PATCH v4 01/36] bsd-user/mips*: Remove Warner Losh
2021-11-05 15:52 ` Richard Henderson
2021-11-05 15:53 ` Kyle Evans
2021-11-05 16:01 ` Warner Losh
2021-11-05 3:18 ` [PATCH v4 02/36] bsd-user/freebsd: Create common target_os_ucontext.h file Warner Losh
2021-11-05 16:01 ` Richard Henderson
2021-11-05 3:18 ` [PATCH v4 03/36] bsd-user: create a per-arch signal.c file Warner Losh
2021-11-05 16:05 ` Richard Henderson
2021-11-05 3:18 ` [PATCH v4 04/36] bsd-user/i386/target_arch_signal.h: Remove target_sigcontext Warner Losh
2021-11-05 3:18 ` [PATCH v4 05/36] bsd-user/i386/target_arch_signal.h: use new target_os_ucontext.h Warner Losh
2021-11-05 3:18 ` [PATCH v4 06/36] bsd-user/i386/target_arch_signal.h: Update mcontext_t to match FreeBSD Warner Losh
2021-11-05 16:15 ` Richard Henderson
2021-11-05 3:18 ` [PATCH v4 07/36] bsd-user/i386: Move the inlines into signal.c Warner Losh
2021-11-05 16:21 ` Richard Henderson
2021-11-05 16:45 ` Warner Losh
2021-11-05 16:55 ` Warner Losh
2021-11-05 3:18 ` [PATCH v4 08/36] bsd-user/x86_64/target_arch_signal.h: Remove target_sigcontext Warner Losh
2021-11-05 3:18 ` [PATCH v4 09/36] bsd-user/x86_64/target_arch_signal.h: use new target_os_ucontext.h Warner Losh
2021-11-05 3:18 ` [PATCH v4 10/36] bsd-user/x86_64/target_arch_signal.h: Fill in mcontext_t Warner Losh
2021-11-05 16:23 ` Richard Henderson
2021-11-05 3:18 ` [PATCH v4 11/36] bsd-user/x86_64: Move functions into signal.c Warner Losh
2021-11-05 16:25 ` Richard Henderson
2021-11-05 17:08 ` Warner Losh
2021-11-05 3:18 ` [PATCH v4 12/36] bsd-user/arm/target_arch_sysarch.h: Use consistent include guards Warner Losh
2021-11-05 3:18 ` [PATCH v4 13/36] bsd-user/arm/target_syscall.h: Add copyright and update name Warner Losh
2021-11-05 3:18 ` [PATCH v4 14/36] bsd-user/arm/target_arch_cpu.c: Target specific TLS routines Warner Losh
2021-11-05 3:18 ` [PATCH v4 15/36] bsd-user/arm/target_arch_cpu.h: CPU Loop definitions Warner Losh
2021-11-05 3:18 ` [PATCH v4 16/36] bsd-user/arm/target_arch_cpu.h: Implement target_cpu_clone_regs Warner Losh
2021-11-05 3:18 ` [PATCH v4 17/36] bsd-user/arm/target_arch_cpu.h: Dummy target_cpu_loop implementation Warner Losh
2021-11-05 3:18 ` [PATCH v4 18/36] bsd-user/arm/target_arch_cpu.h: Implement trivial EXCP exceptions Warner Losh
2021-11-05 3:19 ` [PATCH v4 19/36] bsd-user/arm/target_arch_cpu.h: Implement data abort exceptions Warner Losh
2021-11-05 3:19 ` [PATCH v4 20/36] bsd-user/arm/target_arch_cpu.h: Implement system call dispatch Warner Losh
2021-11-05 3:19 ` [PATCH v4 21/36] bsd-user/arm/target_arch_reg.h: Implement core dump register copying Warner Losh
2021-11-05 3:19 ` [PATCH v4 22/36] bsd-user/arm/target_arch_vmparam.h: Parameters for arm address space Warner Losh
2021-11-05 3:19 ` [PATCH v4 23/36] bsd-user/arm/target_arch_sigtramp.h: Signal Trampoline for arm Warner Losh
2021-11-05 3:19 ` [PATCH v4 24/36] bsd-user/arm/target_arch_thread.h: Routines to create and switch to a thread Warner Losh
2021-11-05 3:19 ` [PATCH v4 25/36] bsd-user/arm/target_arch_elf.h: arm defines for ELF Warner Losh
2021-11-05 3:19 ` Warner Losh [this message]
2021-11-05 3:19 ` [PATCH v4 27/36] bsd-user/arm/target_arch_elf.h: arm get_hwcap2 impl Warner Losh
2021-11-05 3:19 ` [PATCH v4 28/36] bsd-user/arm/target_arch_signal.h: arm specific signal registers and stack Warner Losh
2021-11-05 3:19 ` [PATCH v4 29/36] bsd-user/arm/target_arch_signal.h: arm machine context and trapframe for signals Warner Losh
2021-11-05 16:31 ` Richard Henderson
2021-11-05 3:19 ` [PATCH v4 30/36] bsd-user/arm/target_arch_signal.h: Define size of *context_t Warner Losh
2021-11-05 16:31 ` Richard Henderson
2021-11-05 3:19 ` [PATCH v4 31/36] bsd-user/arm/target_arch_signal.c: arm set_sigtramp_args Warner Losh
2021-11-05 3:19 ` [PATCH v4 32/36] bsd-user/arm/target_arch_signal.c: arm get_mcontext Warner Losh
2021-11-05 16:36 ` Richard Henderson
2021-11-05 3:19 ` [PATCH v4 33/36] bsd-user/arm/target_arch_signal.c: arm set_mcontext Warner Losh
2021-11-05 16:44 ` Richard Henderson
2021-11-05 17:41 ` Warner Losh
2021-11-05 3:19 ` [PATCH v4 34/36] bsd-user/arm/target_arch_signal.c: arm get_ucontext_sigreturn Warner Losh
2021-11-05 3:19 ` [PATCH v4 35/36] bsd-user/freebsd/target_os_ucontext.h: Require TARGET_*CONTEXT_SIZE Warner Losh
2021-11-05 16:45 ` Richard Henderson
2021-11-05 3:19 ` [PATCH v4 36/36] bsd-user: add arm target build Warner Losh
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