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From: Warner Losh <imp@bsdimp.com>
To: qemu-devel@nongnu.org
Cc: Stacey Son <sson@FreeBSD.org>,
	qemu-trivial@nongnu.org, Klye Evans <kevans@FreeBSD.org>,
	Michael Tokarev <mjt@tls.msk.ru>,
	Laurent Vivier <laurent@vivier.eu>, Warner Losh <imp@bsdimp.com>
Subject: [PATCH 15/24] bsd-user/arm/target_arch_elf.h: arm get hwcap
Date: Tue, 19 Oct 2021 10:44:38 -0600	[thread overview]
Message-ID: <20211019164447.16359-16-imp@bsdimp.com> (raw)
In-Reply-To: <20211019164447.16359-1-imp@bsdimp.com>

Implement get_elf_hwcap to get the first word of hardware capabilities.

Signed-off-by: Klye Evans <kevans@FreeBSD.org>
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
---
 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_ */
-- 
2.32.0



  parent reply	other threads:[~2021-10-19 17:33 UTC|newest]

Thread overview: 95+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-19 16:44 [PATCH 00/24] bsd-user: arm (32-bit) support Warner Losh
2021-10-19 16:44 ` [PATCH 01/24] bsd-user/arm/target_arch_sysarch.h: Use consistent include guards Warner Losh
2021-10-23  7:29   ` Kyle Evans
2021-10-28 15:08   ` Richard Henderson
2021-10-19 16:44 ` [PATCH 02/24] bsd-user/arm/target_syscall.h: Add copyright and update name Warner Losh
2021-10-23  7:30   ` Kyle Evans
2021-10-28 15:08   ` Richard Henderson
2021-10-19 16:44 ` [PATCH 03/24] bsd-user/arm/target_arch_cpu.c: Target specific TLS routines Warner Losh
2021-10-23  7:30   ` Kyle Evans
2021-10-28 15:08   ` Richard Henderson
2021-10-19 16:44 ` [PATCH 04/24] bsd-user/arm/target_arch_cpu.h: CPU Loop definitions Warner Losh
2021-10-23  7:31   ` Kyle Evans
2021-10-28 15:14   ` Richard Henderson
2021-10-28 17:36     ` Warner Losh
2021-10-19 16:44 ` [PATCH 05/24] bsd-user/arm/target_arch_cpu.h: Implement target_cpu_clone_regs Warner Losh
2021-10-23  7:31   ` Kyle Evans
2021-10-28 15:15   ` Richard Henderson
2021-10-19 16:44 ` [PATCH 06/24] bsd-user/arm/target_arch_cpu.h: Dummy target_cpu_loop implementation Warner Losh
2021-10-23  7:32   ` Kyle Evans
2021-10-28 15:15   ` Richard Henderson
2021-10-19 16:44 ` [PATCH 07/24] bsd-user/arm/target_arch_cpu.h: Implment trivial EXCP exceptions Warner Losh
2021-10-26  5:52   ` Kyle Evans
2021-10-28 15:19   ` Richard Henderson
2021-10-19 16:44 ` [PATCH 08/24] bsd-user/arm/target_arch_cpu.h: Implement data abort exceptions Warner Losh
2021-10-26  5:47   ` Kyle Evans
2021-10-28 15:29   ` Richard Henderson
2021-10-28 16:56     ` Warner Losh
2021-10-19 16:44 ` [PATCH 09/24] bsd-user/arm/target_arch_cpu.h: Implement system call dispatch Warner Losh
2021-10-23  7:33   ` Kyle Evans
2021-10-23 15:17     ` Warner Losh
2021-10-28 15:35   ` Richard Henderson
2021-10-28 17:56     ` Warner Losh
2021-10-19 16:44 ` [PATCH 10/24] bsd-user/arm/target_arch_reg.h: Implement core dump register copying Warner Losh
2021-10-26  5:48   ` Kyle Evans
2021-10-28 15:36   ` Richard Henderson
2021-10-19 16:44 ` [PATCH 11/24] bsd-user/arm/target_arch_vmparam.h: Parameters for arm address space Warner Losh
2021-10-26  5:52   ` Kyle Evans
2021-10-28 15:37   ` Richard Henderson
2021-10-19 16:44 ` [PATCH 12/24] bsd-user/arm/target_arch_sigtramp.h: Signal Trampoline for arm Warner Losh
2021-10-26  5:51   ` Kyle Evans
2021-10-28 15:42   ` Richard Henderson
2021-10-28 19:35     ` Warner Losh
2021-10-19 16:44 ` [PATCH 13/24] bsd-user/arm/target_arch_thread.h: Routines to create and switch to a thread Warner Losh
2021-10-26  6:01   ` Kyle Evans
2021-10-26  6:11     ` Kyle Evans
2021-10-27 15:35       ` Warner Losh
2021-10-27 15:40         ` Kyle Evans
2021-10-28 15:57   ` Richard Henderson
2021-10-28 19:45     ` Warner Losh
2021-10-29 16:06       ` Richard Henderson
2021-10-19 16:44 ` [PATCH 14/24] bsd-user/arm/target_arch_elf.h: arm defines for ELF Warner Losh
2021-10-26  6:07   ` Kyle Evans
2021-10-28 16:02   ` Richard Henderson
2021-10-19 16:44 ` Warner Losh [this message]
2021-10-26  6:02   ` [PATCH 15/24] bsd-user/arm/target_arch_elf.h: arm get hwcap Kyle Evans
2021-10-28 16:06   ` Richard Henderson
2021-10-19 16:44 ` [PATCH 16/24] bsd-user/arm/target_arch_elf.h: arm get_hwcap2 impl Warner Losh
2021-10-26  6:02   ` Kyle Evans
2021-10-28 16:08   ` Richard Henderson
2021-10-19 16:44 ` [PATCH 17/24] bsd-user/arm/target_arch_signal.h: arm specific signal registers and stack Warner Losh
2021-10-26  6:03   ` Kyle Evans
2021-10-28 16:18   ` Richard Henderson
2021-10-28 16:48     ` Warner Losh
2021-10-19 16:44 ` [PATCH 18/24] bsd-user/arm/target_arch_signal.h: arm machine context for signals Warner Losh
2021-10-26  6:03   ` Kyle Evans
2021-10-28 17:04   ` Richard Henderson
2021-10-28 17:18   ` Richard Henderson
2021-10-28 20:16     ` Warner Losh
2021-10-19 16:44 ` [PATCH 19/24] bsd-user/arm/target_arch_signal.h: arm user context and trapframe " Warner Losh
2021-10-26  6:07   ` Kyle Evans
2021-10-27 15:48     ` Warner Losh
2021-10-28 17:22   ` Richard Henderson
2021-10-30  2:44     ` Warner Losh
2021-10-19 16:44 ` [PATCH 20/24] bsd-user/arm/target_arch_signal.h: arm set_sigtramp_args Warner Losh
2021-10-26  6:10   ` Kyle Evans
2021-10-28 17:25   ` Richard Henderson
2021-10-28 17:35     ` Kyle Evans
2021-10-28 22:22       ` Warner Losh
2021-10-28 22:41     ` Warner Losh
2021-10-30  2:47       ` Warner Losh
2021-10-19 16:44 ` [PATCH 21/24] bsd-user/arm/target_arch_signal.h: arm get_mcontext Warner Losh
2021-10-26  6:08   ` Kyle Evans
2021-10-28 17:27   ` Richard Henderson
2021-10-19 16:44 ` [PATCH 22/24] bsd-user/arm/target_arch_signal.h: arm set_mcontext Warner Losh
2021-10-26  6:12   ` Kyle Evans
2021-10-28 17:53   ` Richard Henderson
2021-10-29  0:07     ` Warner Losh
2021-10-29  4:34       ` Warner Losh
2021-10-28 17:57   ` Richard Henderson
2021-10-19 16:44 ` [PATCH 23/24] bsd-user/arm/target_arch_signal.h: arm get_ucontext_sigreturn Warner Losh
2021-10-26  6:12   ` Kyle Evans
2021-10-28 17:59   ` Richard Henderson
2021-10-19 16:44 ` [PATCH 24/24] bsd-user: add arm target build Warner Losh
2021-10-26  6:21   ` Kyle Evans
2021-10-28 18:02     ` Richard Henderson

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