disas: Move disas.c to disas/

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230503072331.1747057-80-richard.henderson@linaro.org>

1 files changed, 0 insertions, 399 deletions

diff --git a/disas.c b/disas.c
deleted file mode 100644
index d46f638a72..0000000000
--- a/disas.c
+++ /dev/null
@@ -1,399 +0,0 @@
-/* General "disassemble this chunk" code.  Used for debugging. */
-#include "qemu/osdep.h"
-#include "disas/dis-asm.h"
-#include "elf.h"
-#include "qemu/qemu-print.h"
-
-#include "disas/disas.h"
-#include "disas/capstone.h"
-
-typedef struct CPUDebug {
-    struct disassemble_info info;
-    CPUState *cpu;
-} CPUDebug;
-
-/* Filled in by elfload.c.  Simplistic, but will do for now. */
-struct syminfo *syminfos = NULL;
-
-/*
- * Get LENGTH bytes from info's buffer, at host address memaddr.
- * Transfer them to myaddr.
- */
-static int host_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
-                            struct disassemble_info *info)
-{
-    if (memaddr < info->buffer_vma
-        || memaddr + length > info->buffer_vma + info->buffer_length) {
-        /* Out of bounds.  Use EIO because GDB uses it.  */
-        return EIO;
-    }
-    memcpy (myaddr, info->buffer + (memaddr - info->buffer_vma), length);
-    return 0;
-}
-
-/*
- * Get LENGTH bytes from info's buffer, at target address memaddr.
- * Transfer them to myaddr.
- */
-static int target_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
-                              struct disassemble_info *info)
-{
-    CPUDebug *s = container_of(info, CPUDebug, info);
-    int r = cpu_memory_rw_debug(s->cpu, memaddr, myaddr, length, 0);
-    return r ? EIO : 0;
-}
-
-/*
- * Print an error message.  We can assume that this is in response to
- * an error return from {host,target}_read_memory.
- */
-static void perror_memory(int status, bfd_vma memaddr,
-                          struct disassemble_info *info)
-{
-    if (status != EIO) {
-        /* Can't happen.  */
-        info->fprintf_func(info->stream, "Unknown error %d\n", status);
-    } else {
-        /* Address between memaddr and memaddr + len was out of bounds.  */
-        info->fprintf_func(info->stream,
-                           "Address 0x%" PRIx64 " is out of bounds.\n",
-                           memaddr);
-    }
-}
-
-/* Print address in hex. */
-static void print_address(bfd_vma addr, struct disassemble_info *info)
-{
-    info->fprintf_func(info->stream, "0x%" PRIx64, addr);
-}
-
-/* Print address in hex, truncated to the width of a host virtual address. */
-static void host_print_address(bfd_vma addr, struct disassemble_info *info)
-{
-    print_address((uintptr_t)addr, info);
-}
-
-/* Stub prevents some fruitless earching in optabs disassemblers. */
-static int symbol_at_address(bfd_vma addr, struct disassemble_info *info)
-{
-    return 1;
-}
-
-static int print_insn_objdump(bfd_vma pc, disassemble_info *info,
-                              const char *prefix)
-{
-    int i, n = info->buffer_length;
-    g_autofree uint8_t *buf = g_malloc(n);
-
-    if (info->read_memory_func(pc, buf, n, info) == 0) {
-        for (i = 0; i < n; ++i) {
-            if (i % 32 == 0) {
-                info->fprintf_func(info->stream, "\n%s: ", prefix);
-            }
-            info->fprintf_func(info->stream, "%02x", buf[i]);
-        }
-    } else {
-        info->fprintf_func(info->stream, "unable to read memory");
-    }
-    return n;
-}
-
-static int print_insn_od_host(bfd_vma pc, disassemble_info *info)
-{
-    return print_insn_objdump(pc, info, "OBJD-H");
-}
-
-static int print_insn_od_target(bfd_vma pc, disassemble_info *info)
-{
-    return print_insn_objdump(pc, info, "OBJD-T");
-}
-
-static void initialize_debug(CPUDebug *s)
-{
-    memset(s, 0, sizeof(*s));
-    s->info.arch = bfd_arch_unknown;
-    s->info.cap_arch = -1;
-    s->info.cap_insn_unit = 4;
-    s->info.cap_insn_split = 4;
-    s->info.memory_error_func = perror_memory;
-    s->info.symbol_at_address_func = symbol_at_address;
-}
-
-static void initialize_debug_target(CPUDebug *s, CPUState *cpu)
-{
-    initialize_debug(s);
-
-    s->cpu = cpu;
-    s->info.read_memory_func = target_read_memory;
-    s->info.print_address_func = print_address;
-#if TARGET_BIG_ENDIAN
-    s->info.endian = BFD_ENDIAN_BIG;
-#else
-    s->info.endian = BFD_ENDIAN_LITTLE;
-#endif
-
-    CPUClass *cc = CPU_GET_CLASS(cpu);
-    if (cc->disas_set_info) {
-        cc->disas_set_info(cpu, &s->info);
-    }
-}
-
-static void initialize_debug_host(CPUDebug *s)
-{
-    initialize_debug(s);
-
-    s->info.read_memory_func = host_read_memory;
-    s->info.print_address_func = host_print_address;
-#if HOST_BIG_ENDIAN
-    s->info.endian = BFD_ENDIAN_BIG;
-#else
-    s->info.endian = BFD_ENDIAN_LITTLE;
-#endif
-#if defined(CONFIG_TCG_INTERPRETER)
-    s->info.print_insn = print_insn_tci;
-#elif defined(__i386__)
-    s->info.mach = bfd_mach_i386_i386;
-    s->info.cap_arch = CS_ARCH_X86;
-    s->info.cap_mode = CS_MODE_32;
-    s->info.cap_insn_unit = 1;
-    s->info.cap_insn_split = 8;
-#elif defined(__x86_64__)
-    s->info.mach = bfd_mach_x86_64;
-    s->info.cap_arch = CS_ARCH_X86;
-    s->info.cap_mode = CS_MODE_64;
-    s->info.cap_insn_unit = 1;
-    s->info.cap_insn_split = 8;
-#elif defined(_ARCH_PPC)
-    s->info.cap_arch = CS_ARCH_PPC;
-# ifdef _ARCH_PPC64
-    s->info.cap_mode = CS_MODE_64;
-# endif
-#elif defined(__riscv) && defined(CONFIG_RISCV_DIS)
-#if defined(_ILP32) || (__riscv_xlen == 32)
-    s->info.print_insn = print_insn_riscv32;
-#elif defined(_LP64)
-    s->info.print_insn = print_insn_riscv64;
-#else
-#error unsupported RISC-V ABI
-#endif
-#elif defined(__aarch64__)
-    s->info.cap_arch = CS_ARCH_ARM64;
-#elif defined(__alpha__)
-    s->info.print_insn = print_insn_alpha;
-#elif defined(__sparc__)
-    s->info.print_insn = print_insn_sparc;
-    s->info.mach = bfd_mach_sparc_v9b;
-#elif defined(__arm__)
-    /* TCG only generates code for arm mode.  */
-    s->info.cap_arch = CS_ARCH_ARM;
-#elif defined(__MIPSEB__)
-    s->info.print_insn = print_insn_big_mips;
-#elif defined(__MIPSEL__)
-    s->info.print_insn = print_insn_little_mips;
-#elif defined(__m68k__)
-    s->info.print_insn = print_insn_m68k;
-#elif defined(__s390__)
-    s->info.cap_arch = CS_ARCH_SYSZ;
-    s->info.cap_insn_unit = 2;
-    s->info.cap_insn_split = 6;
-#elif defined(__hppa__)
-    s->info.print_insn = print_insn_hppa;
-#elif defined(__loongarch__)
-    s->info.print_insn = print_insn_loongarch;
-#endif
-}
-
-/* Disassemble this for me please... (debugging).  */
-void target_disas(FILE *out, CPUState *cpu, target_ulong code,
-                  target_ulong size)
-{
-    target_ulong pc;
-    int count;
-    CPUDebug s;
-
-    initialize_debug_target(&s, cpu);
-    s.info.fprintf_func = fprintf;
-    s.info.stream = out;
-    s.info.buffer_vma = code;
-    s.info.buffer_length = size;
-
-    if (s.info.cap_arch >= 0 && cap_disas_target(&s.info, code, size)) {
-        return;
-    }
-
-    if (s.info.print_insn == NULL) {
-        s.info.print_insn = print_insn_od_target;
-    }
-
-    for (pc = code; size > 0; pc += count, size -= count) {
-        fprintf(out, "0x" TARGET_FMT_lx ":  ", pc);
-        count = s.info.print_insn(pc, &s.info);
-        fprintf(out, "\n");
-        if (count < 0) {
-            break;
-        }
-        if (size < count) {
-            fprintf(out,
-                    "Disassembler disagrees with translator over instruction "
-                    "decoding\n"
-                    "Please report this to qemu-devel@nongnu.org\n");
-            break;
-        }
-    }
-}
-
-static int G_GNUC_PRINTF(2, 3)
-gstring_printf(FILE *stream, const char *fmt, ...)
-{
-    /* We abuse the FILE parameter to pass a GString. */
-    GString *s = (GString *)stream;
-    int initial_len = s->len;
-    va_list va;
-
-    va_start(va, fmt);
-    g_string_append_vprintf(s, fmt, va);
-    va_end(va);
-
-    return s->len - initial_len;
-}
-
-static void plugin_print_address(bfd_vma addr, struct disassemble_info *info)
-{
-    /* does nothing */
-}
-
-
-/*
- * We should only be dissembling one instruction at a time here. If
- * there is left over it usually indicates the front end has read more
- * bytes than it needed.
- */
-char *plugin_disas(CPUState *cpu, uint64_t addr, size_t size)
-{
-    CPUDebug s;
-    GString *ds = g_string_new(NULL);
-
-    initialize_debug_target(&s, cpu);
-    s.info.fprintf_func = gstring_printf;
-    s.info.stream = (FILE *)ds;  /* abuse this slot */
-    s.info.buffer_vma = addr;
-    s.info.buffer_length = size;
-    s.info.print_address_func = plugin_print_address;
-
-    if (s.info.cap_arch >= 0 && cap_disas_plugin(&s.info, addr, size)) {
-        ; /* done */
-    } else if (s.info.print_insn) {
-        s.info.print_insn(addr, &s.info);
-    } else {
-        ; /* cannot disassemble -- return empty string */
-    }
-
-    /* Return the buffer, freeing the GString container.  */
-    return g_string_free(ds, false);
-}
-
-/* Disassemble this for me please... (debugging). */
-void disas(FILE *out, const void *code, unsigned long size)
-{
-    uintptr_t pc;
-    int count;
-    CPUDebug s;
-
-    initialize_debug_host(&s);
-    s.info.fprintf_func = fprintf;
-    s.info.stream = out;
-    s.info.buffer = code;
-    s.info.buffer_vma = (uintptr_t)code;
-    s.info.buffer_length = size;
-
-    if (s.info.cap_arch >= 0 && cap_disas_host(&s.info, code, size)) {
-        return;
-    }
-
-    if (s.info.print_insn == NULL) {
-        s.info.print_insn = print_insn_od_host;
-    }
-    for (pc = (uintptr_t)code; size > 0; pc += count, size -= count) {
-        fprintf(out, "0x%08" PRIxPTR ":  ", pc);
-        count = s.info.print_insn(pc, &s.info);
-        fprintf(out, "\n");
-        if (count < 0) {
-            break;
-        }
-    }
-
-}
-
-/* Look up symbol for debugging purpose.  Returns "" if unknown. */
-const char *lookup_symbol(target_ulong orig_addr)
-{
-    const char *symbol = "";
-    struct syminfo *s;
-
-    for (s = syminfos; s; s = s->next) {
-        symbol = s->lookup_symbol(s, orig_addr);
-        if (symbol[0] != '\0') {
-            break;
-        }
-    }
-
-    return symbol;
-}
-
-#if !defined(CONFIG_USER_ONLY)
-
-#include "monitor/monitor.h"
-
-static int
-physical_read_memory(bfd_vma memaddr, bfd_byte *myaddr, int length,
-                     struct disassemble_info *info)
-{
-    CPUDebug *s = container_of(info, CPUDebug, info);
-    MemTxResult res;
-
-    res = address_space_read(s->cpu->as, memaddr, MEMTXATTRS_UNSPECIFIED,
-                             myaddr, length);
-    return res == MEMTX_OK ? 0 : EIO;
-}
-
-/* Disassembler for the monitor.  */
-void monitor_disas(Monitor *mon, CPUState *cpu,
-                   target_ulong pc, int nb_insn, int is_physical)
-{
-    int count, i;
-    CPUDebug s;
-    g_autoptr(GString) ds = g_string_new("");
-
-    initialize_debug_target(&s, cpu);
-    s.info.fprintf_func = gstring_printf;
-    s.info.stream = (FILE *)ds;  /* abuse this slot */
-
-    if (is_physical) {
-        s.info.read_memory_func = physical_read_memory;
-    }
-    s.info.buffer_vma = pc;
-
-    if (s.info.cap_arch >= 0 && cap_disas_monitor(&s.info, pc, nb_insn)) {
-        monitor_puts(mon, ds->str);
-        return;
-    }
-
-    if (!s.info.print_insn) {
-        monitor_printf(mon, "0x" TARGET_FMT_lx
-                       ": Asm output not supported on this arch\n", pc);
-        return;
-    }
-
-    for (i = 0; i < nb_insn; i++) {
-        g_string_append_printf(ds, "0x" TARGET_FMT_lx ":  ", pc);
-        count = s.info.print_insn(pc, &s.info);
-        g_string_append_c(ds, '\n');
-        if (count < 0) {
-            break;
-        }
-        pc += count;
-    }
-
-    monitor_puts(mon, ds->str);
-}
-#endif