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-rw-r--r--linux-user/elfload.c147
1 files changed, 128 insertions, 19 deletions
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index d2380b6..995f999 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -20,6 +20,7 @@
#undef ARCH_DLINFO
#undef ELF_PLATFORM
#undef ELF_HWCAP
+#undef ELF_HWCAP2
#undef ELF_CLASS
#undef ELF_DATA
#undef ELF_ARCH
@@ -267,17 +268,15 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUX86State *en
#ifdef TARGET_ARM
+#ifndef TARGET_AARCH64
+/* 32 bit ARM definitions */
+
#define ELF_START_MMAP 0x80000000
#define elf_check_arch(x) ((x) == ELF_MACHINE)
#define ELF_ARCH ELF_MACHINE
-
-#ifdef TARGET_AARCH64
-#define ELF_CLASS ELFCLASS64
-#else
#define ELF_CLASS ELFCLASS32
-#endif
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
@@ -285,10 +284,6 @@ static inline void init_thread(struct target_pt_regs *regs,
abi_long stack = infop->start_stack;
memset(regs, 0, sizeof(*regs));
-#ifdef TARGET_AARCH64
- regs->pc = infop->entry & ~0x3ULL;
- regs->sp = stack;
-#else
regs->ARM_cpsr = 0x10;
if (infop->entry & 1)
regs->ARM_cpsr |= CPSR_T;
@@ -302,7 +297,6 @@ static inline void init_thread(struct target_pt_regs *regs,
/* For uClinux PIC binaries. */
/* XXX: Linux does this only on ARM with no MMU (do we care ?) */
regs->ARM_r10 = infop->start_data;
-#endif
}
#define ELF_NREG 18
@@ -346,13 +340,28 @@ enum
ARM_HWCAP_ARM_EDSP = 1 << 7,
ARM_HWCAP_ARM_JAVA = 1 << 8,
ARM_HWCAP_ARM_IWMMXT = 1 << 9,
- ARM_HWCAP_ARM_THUMBEE = 1 << 10,
- ARM_HWCAP_ARM_NEON = 1 << 11,
- ARM_HWCAP_ARM_VFPv3 = 1 << 12,
- ARM_HWCAP_ARM_VFPv3D16 = 1 << 13,
+ 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,
+};
+
+enum {
+ ARM_HWCAP2_ARM_AES = 1 << 0,
+ ARM_HWCAP2_ARM_PMULL = 1 << 1,
+ ARM_HWCAP2_ARM_SHA1 = 1 << 2,
+ ARM_HWCAP2_ARM_SHA2 = 1 << 3,
+ ARM_HWCAP2_ARM_CRC32 = 1 << 4,
};
-#ifndef TARGET_AARCH64
/* The commpage only exists for 32 bit kernels */
#define TARGET_HAS_VALIDATE_GUEST_SPACE
@@ -414,9 +423,9 @@ static int validate_guest_space(unsigned long guest_base,
return 1; /* All good */
}
-#endif
#define ELF_HWCAP get_elf_hwcap()
+#define ELF_HWCAP2 get_elf_hwcap2()
static uint32_t get_elf_hwcap(void)
{
@@ -427,23 +436,114 @@ static uint32_t get_elf_hwcap(void)
hwcaps |= ARM_HWCAP_ARM_HALF;
hwcaps |= ARM_HWCAP_ARM_THUMB;
hwcaps |= ARM_HWCAP_ARM_FAST_MULT;
- hwcaps |= ARM_HWCAP_ARM_FPA;
/* probe for the extra features */
#define GET_FEATURE(feat, hwcap) \
do { if (arm_feature(&cpu->env, feat)) { hwcaps |= hwcap; } } while (0)
+ /* EDSP is in v5TE and above, but all our v5 CPUs are v5TE */
+ GET_FEATURE(ARM_FEATURE_V5, ARM_HWCAP_ARM_EDSP);
GET_FEATURE(ARM_FEATURE_VFP, ARM_HWCAP_ARM_VFP);
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_VFP3, ARM_HWCAP_ARM_VFPv3);
- GET_FEATURE(ARM_FEATURE_VFP_FP16, ARM_HWCAP_ARM_VFPv3D16);
+ GET_FEATURE(ARM_FEATURE_V6K, ARM_HWCAP_ARM_TLS);
+ GET_FEATURE(ARM_FEATURE_VFP4, ARM_HWCAP_ARM_VFPv4);
+ GET_FEATURE(ARM_FEATURE_ARM_DIV, ARM_HWCAP_ARM_IDIVA);
+ GET_FEATURE(ARM_FEATURE_THUMB_DIV, ARM_HWCAP_ARM_IDIVT);
+ /* All QEMU's VFPv3 CPUs have 32 registers, see VFP_DREG in translate.c.
+ * Note that the ARM_HWCAP_ARM_VFPv3D16 bit is always the inverse of
+ * ARM_HWCAP_ARM_VFPD32 (and so always clear for QEMU); it is unrelated
+ * to our VFP_FP16 feature bit.
+ */
+ GET_FEATURE(ARM_FEATURE_VFP3, ARM_HWCAP_ARM_VFPD32);
+ GET_FEATURE(ARM_FEATURE_LPAE, ARM_HWCAP_ARM_LPAE);
+
+ return hwcaps;
+}
+
+static uint32_t get_elf_hwcap2(void)
+{
+ ARMCPU *cpu = ARM_CPU(thread_cpu);
+ uint32_t hwcaps = 0;
+
+ GET_FEATURE(ARM_FEATURE_V8_AES, ARM_HWCAP2_ARM_AES);
+ GET_FEATURE(ARM_FEATURE_CRC, ARM_HWCAP2_ARM_CRC32);
+ return hwcaps;
+}
+
+#undef GET_FEATURE
+
+#else
+/* 64 bit ARM definitions */
+#define ELF_START_MMAP 0x80000000
+
+#define elf_check_arch(x) ((x) == ELF_MACHINE)
+
+#define ELF_ARCH ELF_MACHINE
+#define ELF_CLASS ELFCLASS64
+#define ELF_PLATFORM "aarch64"
+
+static inline void init_thread(struct target_pt_regs *regs,
+ struct image_info *infop)
+{
+ abi_long stack = infop->start_stack;
+ memset(regs, 0, sizeof(*regs));
+
+ regs->pc = infop->entry & ~0x3ULL;
+ regs->sp = stack;
+}
+
+#define ELF_NREG 34
+typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
+
+static void elf_core_copy_regs(target_elf_gregset_t *regs,
+ const CPUARMState *env)
+{
+ int i;
+
+ for (i = 0; i < 32; i++) {
+ (*regs)[i] = tswapreg(env->xregs[i]);
+ }
+ (*regs)[32] = tswapreg(env->pc);
+ (*regs)[33] = tswapreg(pstate_read((CPUARMState *)env));
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE 4096
+
+enum {
+ ARM_HWCAP_A64_FP = 1 << 0,
+ ARM_HWCAP_A64_ASIMD = 1 << 1,
+ ARM_HWCAP_A64_EVTSTRM = 1 << 2,
+ ARM_HWCAP_A64_AES = 1 << 3,
+ ARM_HWCAP_A64_PMULL = 1 << 4,
+ ARM_HWCAP_A64_SHA1 = 1 << 5,
+ ARM_HWCAP_A64_SHA2 = 1 << 6,
+ ARM_HWCAP_A64_CRC32 = 1 << 7,
+};
+
+#define ELF_HWCAP get_elf_hwcap()
+
+static uint32_t get_elf_hwcap(void)
+{
+ ARMCPU *cpu = ARM_CPU(thread_cpu);
+ uint32_t hwcaps = 0;
+
+ hwcaps |= ARM_HWCAP_A64_FP;
+ hwcaps |= ARM_HWCAP_A64_ASIMD;
+
+ /* probe for the extra features */
+#define GET_FEATURE(feat, hwcap) \
+ do { if (arm_feature(&cpu->env, feat)) { hwcaps |= hwcap; } } while (0)
+ GET_FEATURE(ARM_FEATURE_V8_AES, ARM_HWCAP_A64_PMULL);
#undef GET_FEATURE
return hwcaps;
}
-#endif
+#endif /* not TARGET_AARCH64 */
+#endif /* TARGET_ARM */
#ifdef TARGET_UNICORE32
@@ -1407,6 +1507,9 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc,
#ifdef DLINFO_ARCH_ITEMS
size += DLINFO_ARCH_ITEMS * 2;
#endif
+#ifdef ELF_HWCAP2
+ size += 2;
+#endif
size += envc + argc + 2;
size += 1; /* argc itself */
size *= n;
@@ -1440,6 +1543,10 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc,
NEW_AUX_ENT(AT_CLKTCK, (abi_ulong) sysconf(_SC_CLK_TCK));
NEW_AUX_ENT(AT_RANDOM, (abi_ulong) u_rand_bytes);
+#ifdef ELF_HWCAP2
+ NEW_AUX_ENT(AT_HWCAP2, (abi_ulong) ELF_HWCAP2);
+#endif
+
if (k_platform)
NEW_AUX_ENT(AT_PLATFORM, u_platform);
#ifdef ARCH_DLINFO
@@ -1455,6 +1562,8 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc,
info->auxv_len = sp_auxv - sp;
sp = loader_build_argptr(envc, argc, sp, p, 0);
+ /* Check the right amount of stack was allocated for auxvec, envp & argv. */
+ assert(sp_auxv - sp == size);
return sp;
}
generated by cgit v1.1 at 2025-01-01 09:07:01 +0000