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[3/7] linux-user/elfload.c: Add missing arm and arm64 hwcap values

Message ID 20230911135340.1139553-4-peter.maydell@linaro.org
State Superseded
Headers show
Series target/arm: hwcaps updates, FEAT_HBC | expand

Commit Message

Peter Maydell Sept. 11, 2023, 1:53 p.m. UTC 
Our lists of Arm 32 and 64 bit hwcap values have lagged behind
the Linux kernel. Update them to include all the bits defined
as of upstream Linux git commit a48fa7efaf1161c1 (in the middle
of the kernel 6.6 dev cycle).

For 64-bit, we don't yet implement any of the features reported via
these hwcap bits.  For 32-bit we do in fact already implement them
all; we'll add the code to set them in a subsequent commit.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 linux-user/elfload.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

Comments

Philippe Mathieu-Daudé Sept. 11, 2023, 2:59 p.m. UTC | #1 
On 11/9/23 15:53, Peter Maydell wrote:
> Our lists of Arm 32 and 64 bit hwcap values have lagged behind
> the Linux kernel. Update them to include all the bits defined
> as of upstream Linux git commit a48fa7efaf1161c1 (in the middle
> of the kernel 6.6 dev cycle).
> 
> For 64-bit, we don't yet implement any of the features reported via
> these hwcap bits.  For 32-bit we do in fact already implement them
> all; we'll add the code to set them in a subsequent commit.
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>   linux-user/elfload.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 44 insertions(+)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>

Why can't we import asm/hwcap.h with update-linux-headers.sh?
Peter Maydell Sept. 11, 2023, 3:04 p.m. UTC | #2 
On Mon, 11 Sept 2023 at 15:59, Philippe Mathieu-Daudé <philmd@linaro.org> wrote:
>
> On 11/9/23 15:53, Peter Maydell wrote:
> > Our lists of Arm 32 and 64 bit hwcap values have lagged behind
> > the Linux kernel. Update them to include all the bits defined
> > as of upstream Linux git commit a48fa7efaf1161c1 (in the middle
> > of the kernel 6.6 dev cycle).
> >
> > For 64-bit, we don't yet implement any of the features reported via
> > these hwcap bits.  For 32-bit we do in fact already implement them
> > all; we'll add the code to set them in a subsequent commit.
> >
> > Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> > ---
> >   linux-user/elfload.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
> >   1 file changed, 44 insertions(+)
>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
>
> Why can't we import asm/hwcap.h with update-linux-headers.sh?

Probably no inherent reason, but historically linux-user has
always defined its own versions of target architecture
kernel header values and structures.

-- PMM
diff mbox series

Patch

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 5ce009d7137..d51d077998a 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -402,6 +402,12 @@  enum
     ARM_HWCAP_ARM_VFPD32    = 1 << 19,
     ARM_HWCAP_ARM_LPAE      = 1 << 20,
     ARM_HWCAP_ARM_EVTSTRM   = 1 << 21,
+    ARM_HWCAP_ARM_FPHP      = 1 << 22,
+    ARM_HWCAP_ARM_ASIMDHP   = 1 << 23,
+    ARM_HWCAP_ARM_ASIMDDP   = 1 << 24,
+    ARM_HWCAP_ARM_ASIMDFHM  = 1 << 25,
+    ARM_HWCAP_ARM_ASIMDBF16 = 1 << 26,
+    ARM_HWCAP_ARM_I8MM      = 1 << 27,
 };
 
 enum {
@@ -410,6 +416,8 @@  enum {
     ARM_HWCAP2_ARM_SHA1     = 1 << 2,
     ARM_HWCAP2_ARM_SHA2     = 1 << 3,
     ARM_HWCAP2_ARM_CRC32    = 1 << 4,
+    ARM_HWCAP2_ARM_SB       = 1 << 5,
+    ARM_HWCAP2_ARM_SSBS     = 1 << 6,
 };
 
 /* The commpage only exists for 32 bit kernels */
@@ -540,6 +548,12 @@  const char *elf_hwcap_str(uint32_t bit)
     [__builtin_ctz(ARM_HWCAP_ARM_VFPD32   )] = "vfpd32",
     [__builtin_ctz(ARM_HWCAP_ARM_LPAE     )] = "lpae",
     [__builtin_ctz(ARM_HWCAP_ARM_EVTSTRM  )] = "evtstrm",
+    [__builtin_ctz(ARM_HWCAP_ARM_FPHP     )] = "fphp",
+    [__builtin_ctz(ARM_HWCAP_ARM_ASIMDHP  )] = "asimdhp",
+    [__builtin_ctz(ARM_HWCAP_ARM_ASIMDDP  )] = "asimddp",
+    [__builtin_ctz(ARM_HWCAP_ARM_ASIMDFHM )] = "asimdfhm",
+    [__builtin_ctz(ARM_HWCAP_ARM_ASIMDBF16)] = "asimdbf16",
+    [__builtin_ctz(ARM_HWCAP_ARM_I8MM     )] = "i8mm",
     };
 
     return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL;
@@ -553,6 +567,8 @@  const char *elf_hwcap2_str(uint32_t bit)
     [__builtin_ctz(ARM_HWCAP2_ARM_SHA1 )] = "sha1",
     [__builtin_ctz(ARM_HWCAP2_ARM_SHA2 )] = "sha2",
     [__builtin_ctz(ARM_HWCAP2_ARM_CRC32)] = "crc32",
+    [__builtin_ctz(ARM_HWCAP2_ARM_SB   )] = "sb",
+    [__builtin_ctz(ARM_HWCAP2_ARM_SSBS )] = "ssbs",
     };
 
     return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL;
@@ -696,6 +712,20 @@  enum {
     ARM_HWCAP2_A64_SME_B16F32   = 1 << 28,
     ARM_HWCAP2_A64_SME_F32F32   = 1 << 29,
     ARM_HWCAP2_A64_SME_FA64     = 1 << 30,
+    ARM_HWCAP2_A64_WFXT         = 1ULL << 31,
+    ARM_HWCAP2_A64_EBF16        = 1ULL << 32,
+    ARM_HWCAP2_A64_SVE_EBF16    = 1ULL << 33,
+    ARM_HWCAP2_A64_CSSC         = 1ULL << 34,
+    ARM_HWCAP2_A64_RPRFM        = 1ULL << 35,
+    ARM_HWCAP2_A64_SVE2P1       = 1ULL << 36,
+    ARM_HWCAP2_A64_SME2         = 1ULL << 37,
+    ARM_HWCAP2_A64_SME2P1       = 1ULL << 38,
+    ARM_HWCAP2_A64_SME_I16I32   = 1ULL << 39,
+    ARM_HWCAP2_A64_SME_BI32I32  = 1ULL << 40,
+    ARM_HWCAP2_A64_SME_B16B16   = 1ULL << 41,
+    ARM_HWCAP2_A64_SME_F16F16   = 1ULL << 42,
+    ARM_HWCAP2_A64_MOPS         = 1ULL << 43,
+    ARM_HWCAP2_A64_HBC          = 1ULL << 44,
 };
 
 #define ELF_HWCAP   get_elf_hwcap()
@@ -851,6 +881,20 @@  const char *elf_hwcap2_str(uint32_t bit)
     [__builtin_ctz(ARM_HWCAP2_A64_SME_B16F32   )] = "smeb16f32",
     [__builtin_ctz(ARM_HWCAP2_A64_SME_F32F32   )] = "smef32f32",
     [__builtin_ctz(ARM_HWCAP2_A64_SME_FA64     )] = "smefa64",
+    [__builtin_ctz(ARM_HWCAP2_A64_WFXT         )] = "wfxt",
+    [__builtin_ctzll(ARM_HWCAP2_A64_EBF16      )] = "ebf16",
+    [__builtin_ctzll(ARM_HWCAP2_A64_SVE_EBF16  )] = "sveebf16",
+    [__builtin_ctzll(ARM_HWCAP2_A64_CSSC       )] = "cssc",
+    [__builtin_ctzll(ARM_HWCAP2_A64_RPRFM      )] = "rprfm",
+    [__builtin_ctzll(ARM_HWCAP2_A64_SVE2P1     )] = "sve2p1",
+    [__builtin_ctzll(ARM_HWCAP2_A64_SME2       )] = "sme2",
+    [__builtin_ctzll(ARM_HWCAP2_A64_SME2P1     )] = "sme2p1",
+    [__builtin_ctzll(ARM_HWCAP2_A64_SME_I16I32 )] = "smei16i32",
+    [__builtin_ctzll(ARM_HWCAP2_A64_SME_BI32I32)] = "smebi32i32",
+    [__builtin_ctzll(ARM_HWCAP2_A64_SME_B16B16 )] = "smeb16b16",
+    [__builtin_ctzll(ARM_HWCAP2_A64_SME_F16F16 )] = "smef16f16",
+    [__builtin_ctzll(ARM_HWCAP2_A64_MOPS       )] = "mops",
+    [__builtin_ctzll(ARM_HWCAP2_A64_HBC        )] = "hbc",
     };
 
     return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL;