Move target-* CPU file into a target/ folder

We've currently got 18 architectures in QEMU, and thus 18 target-xxx
folders in the root folder of the QEMU source tree. More architectures
(e.g. RISC-V, AVR) are likely to be included soon, too, so the main
folder of the QEMU sources slowly gets quite overcrowded with the
target-xxx folders.
To disburden the main folder a little bit, let's move the target-xxx
folders into a dedicated target/ folder, so that target-xxx/ simply
becomes target/xxx/ instead.

Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part]
Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part]
Acked-by: Michael Walle <michael@walle.cc> [lm32 part]
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part]
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part]
Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part]
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part]
Acked-by: Richard Henderson <rth@twiddle.net> [alpha part]
Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part]
Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part]
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [cris&microblaze part]
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part]
Signed-off-by: Thomas Huth <thuth@redhat.com>

target/ppc/arch_dump.c

@@ -0,0 +1,286 @@
+/*
+ * writing ELF notes for ppc64 arch
+ *
+ *
+ * Copyright IBM, Corp. 2013
+ *
+ * Authors:
+ * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "elf.h"
+#include "exec/cpu-all.h"
+#include "sysemu/dump.h"
+#include "sysemu/kvm.h"
+
+struct PPC64UserRegStruct {
+    uint64_t gpr[32];
+    uint64_t nip;
+    uint64_t msr;
+    uint64_t orig_gpr3;
+    uint64_t ctr;
+    uint64_t link;
+    uint64_t xer;
+    uint64_t ccr;
+    uint64_t softe;
+    uint64_t trap;
+    uint64_t dar;
+    uint64_t dsisr;
+    uint64_t result;
+} QEMU_PACKED;
+
+struct PPC64ElfPrstatus {
+    char pad1[112];
+    struct PPC64UserRegStruct pr_reg;
+    uint64_t pad2[4];
+} QEMU_PACKED;
+
+
+struct PPC64ElfFpregset {
+    uint64_t fpr[32];
+    uint64_t fpscr;
+}  QEMU_PACKED;
+
+
+struct PPC64ElfVmxregset {
+    ppc_avr_t avr[32];
+    ppc_avr_t vscr;
+    union {
+        ppc_avr_t unused;
+        uint32_t value;
+    } vrsave;
+}  QEMU_PACKED;
+
+struct PPC64ElfVsxregset {
+    uint64_t vsr[32];
+}  QEMU_PACKED;
+
+struct PPC64ElfSperegset {
+    uint32_t evr[32];
+    uint64_t spe_acc;
+    uint32_t spe_fscr;
+}  QEMU_PACKED;
+
+typedef struct noteStruct {
+    Elf64_Nhdr hdr;
+    char name[5];
+    char pad3[3];
+    union {
+        struct PPC64ElfPrstatus  prstatus;
+        struct PPC64ElfFpregset  fpregset;
+        struct PPC64ElfVmxregset vmxregset;
+        struct PPC64ElfVsxregset vsxregset;
+        struct PPC64ElfSperegset speregset;
+    } contents;
+} QEMU_PACKED Note;
+
+typedef struct NoteFuncArg {
+    Note note;
+    DumpState *state;
+} NoteFuncArg;
+
+static void ppc64_write_elf64_prstatus(NoteFuncArg *arg, PowerPCCPU *cpu)
+{
+    int i;
+    uint64_t cr;
+    struct PPC64ElfPrstatus *prstatus;
+    struct PPC64UserRegStruct *reg;
+    Note *note = &arg->note;
+    DumpState *s = arg->state;
+
+    note->hdr.n_type = cpu_to_dump32(s, NT_PRSTATUS);
+
+    prstatus = &note->contents.prstatus;
+    memset(prstatus, 0, sizeof(*prstatus));
+    reg = &prstatus->pr_reg;
+
+    for (i = 0; i < 32; i++) {
+        reg->gpr[i] = cpu_to_dump64(s, cpu->env.gpr[i]);
+    }
+    reg->nip = cpu_to_dump64(s, cpu->env.nip);
+    reg->msr = cpu_to_dump64(s, cpu->env.msr);
+    reg->ctr = cpu_to_dump64(s, cpu->env.ctr);
+    reg->link = cpu_to_dump64(s, cpu->env.lr);
+    reg->xer = cpu_to_dump64(s, cpu_read_xer(&cpu->env));
+
+    cr = 0;
+    for (i = 0; i < 8; i++) {
+        cr |= (cpu->env.crf[i] & 15) << (4 * (7 - i));
+    }
+    reg->ccr = cpu_to_dump64(s, cr);
+}
+
+static void ppc64_write_elf64_fpregset(NoteFuncArg *arg, PowerPCCPU *cpu)
+{
+    int i;
+    struct PPC64ElfFpregset  *fpregset;
+    Note *note = &arg->note;
+    DumpState *s = arg->state;
+
+    note->hdr.n_type = cpu_to_dump32(s, NT_PRFPREG);
+
+    fpregset = &note->contents.fpregset;
+    memset(fpregset, 0, sizeof(*fpregset));
+
+    for (i = 0; i < 32; i++) {
+        fpregset->fpr[i] = cpu_to_dump64(s, cpu->env.fpr[i]);
+    }
+    fpregset->fpscr = cpu_to_dump64(s, cpu->env.fpscr);
+}
+
+static void ppc64_write_elf64_vmxregset(NoteFuncArg *arg, PowerPCCPU *cpu)
+{
+    int i;
+    struct PPC64ElfVmxregset *vmxregset;
+    Note *note = &arg->note;
+    DumpState *s = arg->state;
+
+    note->hdr.n_type = cpu_to_dump32(s, NT_PPC_VMX);
+    vmxregset = &note->contents.vmxregset;
+    memset(vmxregset, 0, sizeof(*vmxregset));
+
+    for (i = 0; i < 32; i++) {
+        bool needs_byteswap;
+
+#ifdef HOST_WORDS_BIGENDIAN
+        needs_byteswap = s->dump_info.d_endian == ELFDATA2LSB;
+#else
+        needs_byteswap = s->dump_info.d_endian == ELFDATA2MSB;
+#endif
+
+        if (needs_byteswap) {
+            vmxregset->avr[i].u64[0] = bswap64(cpu->env.avr[i].u64[1]);
+            vmxregset->avr[i].u64[1] = bswap64(cpu->env.avr[i].u64[0]);
+        } else {
+            vmxregset->avr[i].u64[0] = cpu->env.avr[i].u64[0];
+            vmxregset->avr[i].u64[1] = cpu->env.avr[i].u64[1];
+        }
+    }
+    vmxregset->vscr.u32[3] = cpu_to_dump32(s, cpu->env.vscr);
+}
+static void ppc64_write_elf64_vsxregset(NoteFuncArg *arg, PowerPCCPU *cpu)
+{
+    int i;
+    struct PPC64ElfVsxregset *vsxregset;
+    Note *note = &arg->note;
+    DumpState *s = arg->state;
+
+    note->hdr.n_type = cpu_to_dump32(s, NT_PPC_VSX);
+    vsxregset = &note->contents.vsxregset;
+    memset(vsxregset, 0, sizeof(*vsxregset));
+
+    for (i = 0; i < 32; i++) {
+        vsxregset->vsr[i] = cpu_to_dump64(s, cpu->env.vsr[i]);
+    }
+}
+static void ppc64_write_elf64_speregset(NoteFuncArg *arg, PowerPCCPU *cpu)
+{
+    struct PPC64ElfSperegset *speregset;
+    Note *note = &arg->note;
+    DumpState *s = arg->state;
+
+    note->hdr.n_type = cpu_to_dump32(s, NT_PPC_SPE);
+    speregset = &note->contents.speregset;
+    memset(speregset, 0, sizeof(*speregset));
+
+    speregset->spe_acc = cpu_to_dump64(s, cpu->env.spe_acc);
+    speregset->spe_fscr = cpu_to_dump32(s, cpu->env.spe_fscr);
+}
+
+static const struct NoteFuncDescStruct {
+    int contents_size;
+    void (*note_contents_func)(NoteFuncArg *arg, PowerPCCPU *cpu);
+} note_func[] = {
+    {sizeof(((Note *)0)->contents.prstatus),  ppc64_write_elf64_prstatus},
+    {sizeof(((Note *)0)->contents.fpregset),  ppc64_write_elf64_fpregset},
+    {sizeof(((Note *)0)->contents.vmxregset), ppc64_write_elf64_vmxregset},
+    {sizeof(((Note *)0)->contents.vsxregset), ppc64_write_elf64_vsxregset},
+    {sizeof(((Note *)0)->contents.speregset), ppc64_write_elf64_speregset},
+    { 0, NULL}
+};
+
+typedef struct NoteFuncDescStruct NoteFuncDesc;
+
+int cpu_get_dump_info(ArchDumpInfo *info,
+                      const struct GuestPhysBlockList *guest_phys_blocks)
+{
+    PowerPCCPU *cpu = POWERPC_CPU(first_cpu);
+    PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
+
+    info->d_machine = EM_PPC64;
+    info->d_class = ELFCLASS64;
+    if ((*pcc->interrupts_big_endian)(cpu)) {
+        info->d_endian = ELFDATA2MSB;
+    } else {
+        info->d_endian = ELFDATA2LSB;
+    }
+    /* 64KB is the max page size for pseries kernel */
+    if (strncmp(object_get_typename(qdev_get_machine()),
+                "pseries-", 8) == 0) {
+        info->page_size = (1U << 16);
+    }
+
+    return 0;
+}
+
+ssize_t cpu_get_note_size(int class, int machine, int nr_cpus)
+{
+    int name_size = 8; /* "CORE" or "QEMU" rounded */
+    size_t elf_note_size = 0;
+    int note_head_size;
+    const NoteFuncDesc *nf;
+
+    if (class != ELFCLASS64) {
+        return -1;
+    }
+    assert(machine == EM_PPC64);
+
+    note_head_size = sizeof(Elf64_Nhdr);
+
+    for (nf = note_func; nf->note_contents_func; nf++) {
+        elf_note_size = elf_note_size + note_head_size + name_size +
+                        nf->contents_size;
+    }
+
+    return (elf_note_size) * nr_cpus;
+}
+
+static int ppc64_write_all_elf64_notes(const char *note_name,
+                                       WriteCoreDumpFunction f,
+                                       PowerPCCPU *cpu, int id,
+                                       void *opaque)
+{
+    NoteFuncArg arg = { .state = opaque };
+    int ret = -1;
+    int note_size;
+    const NoteFuncDesc *nf;
+
+    for (nf = note_func; nf->note_contents_func; nf++) {
+        arg.note.hdr.n_namesz = cpu_to_dump32(opaque, sizeof(arg.note.name));
+        arg.note.hdr.n_descsz = cpu_to_dump32(opaque, nf->contents_size);
+        strncpy(arg.note.name, note_name, sizeof(arg.note.name));
+
+        (*nf->note_contents_func)(&arg, cpu);
+
+        note_size =
+            sizeof(arg.note) - sizeof(arg.note.contents) + nf->contents_size;
+        ret = f(&arg.note, note_size, opaque);
+        if (ret < 0) {
+            return -1;
+        }
+    }
+    return 0;
+}
+
+int ppc64_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
+                               int cpuid, void *opaque)
+{
+    PowerPCCPU *cpu = POWERPC_CPU(cs);
+    return ppc64_write_all_elf64_notes("CORE", f, cpu, cpuid, opaque);
+}