MinElf.smali
.class public final Lcom/facebook/soloader/MinElf;
.super Ljava/lang/Object;
.source "SourceFile"
# annotations
.annotation system Ldalvik/annotation/MemberClasses;
value = {
Lcom/facebook/soloader/MinElf$ElfError;
}
.end annotation
# static fields
.field public static final DT_NEEDED:I = 0x1
.field public static final DT_NULL:I = 0x0
.field public static final DT_STRTAB:I = 0x5
.field public static final ELF_MAGIC:I = 0x464c457f
.field public static final PN_XNUM:I = 0xffff
.field public static final PT_DYNAMIC:I = 0x2
.field public static final PT_LOAD:I = 0x1
# direct methods
.method public constructor <init>()V
.registers 1
.line 32
invoke-direct {p0}, Ljava/lang/Object;-><init>()V
return-void
.end method
.method public static extract_DT_NEEDED(Ljava/io/File;)[Ljava/lang/String;
.registers 2
.annotation system Ldalvik/annotation/Throws;
value = {
Ljava/io/IOException;
}
.end annotation
.line 46
new-instance v0, Ljava/io/FileInputStream;
invoke-direct {v0, p0}, Ljava/io/FileInputStream;-><init>(Ljava/io/File;)V
.line 48
:try_start_5
invoke-virtual {v0}, Ljava/io/FileInputStream;->getChannel()Ljava/nio/channels/FileChannel;
move-result-object p0
invoke-static {p0}, Lcom/facebook/soloader/MinElf;->extract_DT_NEEDED(Ljava/nio/channels/FileChannel;)[Ljava/lang/String;
move-result-object p0
:try_end_d
.catchall {:try_start_5 .. :try_end_d} :catchall_11
.line 50
invoke-virtual {v0}, Ljava/io/FileInputStream;->close()V
return-object p0
:catchall_11
move-exception p0
invoke-virtual {v0}, Ljava/io/FileInputStream;->close()V
.line 51
throw p0
.end method
.method public static extract_DT_NEEDED(Ljava/nio/channels/FileChannel;)[Ljava/lang/String;
.registers 36
.annotation system Ldalvik/annotation/Throws;
value = {
Ljava/io/IOException;
}
.end annotation
move-object/from16 v0, p0
const/16 v1, 0x8
.line 68
invoke-static {v1}, Ljava/nio/ByteBuffer;->allocate(I)Ljava/nio/ByteBuffer;
move-result-object v1
.line 72
sget-object v2, Ljava/nio/ByteOrder;->LITTLE_ENDIAN:Ljava/nio/ByteOrder;
invoke-virtual {v1, v2}, Ljava/nio/ByteBuffer;->order(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;
const-wide/16 v2, 0x0
.line 73
invoke-static {v0, v1, v2, v3}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v4
const-wide/32 v6, 0x464c457f
cmp-long v8, v4, v6
if-nez v8, :cond_206
const-wide/16 v4, 0x4
.line 77
invoke-static {v0, v1, v4, v5}, Lcom/facebook/soloader/MinElf;->getu8(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)S
move-result v6
const/4 v8, 0x1
if-ne v6, v8, :cond_24
goto :goto_25
:cond_24
const/4 v8, 0x0
:goto_25
const-wide/16 v9, 0x5
.line 78
invoke-static {v0, v1, v9, v10}, Lcom/facebook/soloader/MinElf;->getu8(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)S
move-result v6
const/4 v11, 0x2
if-ne v6, v11, :cond_33
.line 79
sget-object v6, Ljava/nio/ByteOrder;->BIG_ENDIAN:Ljava/nio/ByteOrder;
invoke-virtual {v1, v6}, Ljava/nio/ByteBuffer;->order(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;
:cond_33
const-wide/16 v11, 0x1c
const-wide/16 v13, 0x20
if-eqz v8, :cond_3e
.line 87
invoke-static {v0, v1, v11, v12}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v15
goto :goto_42
.line 88
:cond_3e
invoke-static {v0, v1, v13, v14}, Lcom/facebook/soloader/MinElf;->get64(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v15
:goto_42
const-wide/16 v9, 0x2c
if-eqz v8, :cond_4c
.line 91
invoke-static {v0, v1, v9, v10}, Lcom/facebook/soloader/MinElf;->getu16(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)I
move-result v6
int-to-long v4, v6
goto :goto_53
:cond_4c
const-wide/16 v4, 0x38
.line 92
invoke-static {v0, v1, v4, v5}, Lcom/facebook/soloader/MinElf;->getu16(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)I
move-result v4
int-to-long v4, v4
:goto_53
if-eqz v8, :cond_5c
const-wide/16 v2, 0x2a
.line 95
invoke-static {v0, v1, v2, v3}, Lcom/facebook/soloader/MinElf;->getu16(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)I
move-result v2
goto :goto_62
:cond_5c
const-wide/16 v2, 0x36
.line 96
invoke-static {v0, v1, v2, v3}, Lcom/facebook/soloader/MinElf;->getu16(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)I
move-result v2
:goto_62
const-wide/32 v23, 0xffff
const-wide/16 v9, 0x28
cmp-long v3, v4, v23
if-nez v3, :cond_86
if-eqz v8, :cond_72
.line 101
invoke-static {v0, v1, v13, v14}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v3
goto :goto_76
.line 102
:cond_72
invoke-static {v0, v1, v9, v10}, Lcom/facebook/soloader/MinElf;->get64(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v3
:goto_76
if-eqz v8, :cond_7e
add-long/2addr v3, v11
.line 105
invoke-static {v0, v1, v3, v4}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v3
goto :goto_85
:cond_7e
const-wide/16 v5, 0x2c
add-long/2addr v3, v5
.line 106
invoke-static {v0, v1, v3, v4}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v3
:goto_85
move-wide v4, v3
:cond_86
move-wide v13, v15
const-wide/16 v11, 0x0
:goto_89
const-wide/16 v23, 0x1
const-wide/16 v25, 0x8
cmp-long v3, v11, v4
if-gez v3, :cond_b7
const-wide/16 v21, 0x0
add-long v9, v13, v21
.line 117
invoke-static {v0, v1, v9, v10}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v9
const-wide/16 v29, 0x2
cmp-long v3, v9, v29
if-nez v3, :cond_b0
if-eqz v8, :cond_a9
const-wide/16 v9, 0x4
add-long/2addr v13, v9
.line 121
invoke-static {v0, v1, v13, v14}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v9
goto :goto_b9
:cond_a9
add-long v13, v13, v25
.line 122
invoke-static {v0, v1, v13, v14}, Lcom/facebook/soloader/MinElf;->get64(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v9
goto :goto_b9
:cond_b0
int-to-long v9, v2
add-long/2addr v13, v9
add-long v11, v11, v23
const-wide/16 v9, 0x28
goto :goto_89
:cond_b7
const-wide/16 v9, 0x0
:goto_b9
const-wide/16 v21, 0x0
cmp-long v3, v9, v21
if-eqz v3, :cond_1fe
move-wide v13, v9
move-wide/from16 v11, v21
const/4 v3, 0x0
:goto_c3
if-eqz v8, :cond_ce
move/from16 v29, v8
add-long v7, v13, v21
.line 146
invoke-static {v0, v1, v7, v8}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v7
goto :goto_d6
:cond_ce
move/from16 v29, v8
add-long v7, v13, v21
.line 147
invoke-static {v0, v1, v7, v8}, Lcom/facebook/soloader/MinElf;->get64(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v7
:goto_d6
const-string v6, "malformed DT_NEEDED section"
cmp-long v31, v7, v23
if-nez v31, :cond_ec
move-wide/from16 v31, v9
const v9, 0x7fffffff
if-eq v3, v9, :cond_e6
add-int/lit8 v3, v3, 0x1
goto :goto_106
.line 151
:cond_e6
new-instance v0, Lcom/facebook/soloader/MinElf$ElfError;
invoke-direct {v0, v6}, Lcom/facebook/soloader/MinElf$ElfError;-><init>(Ljava/lang/String;)V
throw v0
:cond_ec
move-wide/from16 v31, v9
const-wide/16 v9, 0x5
cmp-long v17, v7, v9
if-nez v17, :cond_106
if-eqz v29, :cond_ff
const-wide/16 v11, 0x4
add-long v9, v13, v11
.line 157
invoke-static {v0, v1, v9, v10}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v9
goto :goto_105
:cond_ff
add-long v9, v13, v25
.line 158
invoke-static {v0, v1, v9, v10}, Lcom/facebook/soloader/MinElf;->get64(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v9
:goto_105
move-wide v11, v9
:cond_106
:goto_106
const-wide/16 v9, 0x10
if-eqz v29, :cond_10d
move-wide/from16 v33, v25
goto :goto_10f
:cond_10d
move-wide/from16 v33, v9
:goto_10f
add-long v13, v13, v33
const-wide/16 v21, 0x0
cmp-long v33, v7, v21
if-nez v33, :cond_1f6
cmp-long v7, v11, v21
if-eqz v7, :cond_1ee
const/4 v7, 0x0
:goto_11c
int-to-long v13, v7
cmp-long v8, v13, v4
if-gez v8, :cond_180
add-long v13, v15, v21
.line 176
invoke-static {v0, v1, v13, v14}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v13
cmp-long v8, v13, v23
if-nez v8, :cond_171
if-eqz v29, :cond_134
add-long v13, v15, v25
.line 180
invoke-static {v0, v1, v13, v14}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v13
goto :goto_13a
:cond_134
add-long v13, v15, v9
.line 181
invoke-static {v0, v1, v13, v14}, Lcom/facebook/soloader/MinElf;->get64(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v13
:goto_13a
if-eqz v29, :cond_14a
const-wide/16 v17, 0x14
add-long v9, v15, v17
.line 184
invoke-static {v0, v1, v9, v10}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v8
move-wide/from16 v27, v4
move-wide v4, v8
const-wide/16 v8, 0x28
goto :goto_154
:cond_14a
move-wide/from16 v27, v4
const-wide/16 v8, 0x28
add-long v4, v15, v8
.line 185
invoke-static {v0, v1, v4, v5}, Lcom/facebook/soloader/MinElf;->get64(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v4
:goto_154
cmp-long v10, v13, v11
if-gtz v10, :cond_175
add-long/2addr v4, v13
cmp-long v10, v11, v4
if-gez v10, :cond_175
if-eqz v29, :cond_168
const-wide/16 v4, 0x4
add-long v7, v15, v4
.line 189
invoke-static {v0, v1, v7, v8}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v4
goto :goto_16e
:cond_168
add-long v4, v15, v25
.line 190
invoke-static {v0, v1, v4, v5}, Lcom/facebook/soloader/MinElf;->get64(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v4
:goto_16e
sub-long/2addr v11, v13
add-long/2addr v4, v11
goto :goto_182
:cond_171
move-wide/from16 v27, v4
const-wide/16 v8, 0x28
:cond_175
int-to-long v4, v2
add-long/2addr v15, v4
add-int/lit8 v7, v7, 0x1
move-wide/from16 v4, v27
const-wide/16 v9, 0x10
const-wide/16 v21, 0x0
goto :goto_11c
:cond_180
const-wide/16 v4, 0x0
:goto_182
const-wide/16 v7, 0x0
cmp-long v2, v4, v7
if-eqz v2, :cond_1e6
.line 204
new-array v2, v3, [Ljava/lang/String;
const/4 v9, 0x0
:goto_18b
if-eqz v29, :cond_194
add-long v10, v31, v7
.line 211
invoke-static {v0, v1, v10, v11}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v10
goto :goto_19a
:cond_194
add-long v10, v31, v7
.line 212
invoke-static {v0, v1, v10, v11}, Lcom/facebook/soloader/MinElf;->get64(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v10
:goto_19a
cmp-long v7, v10, v23
if-nez v7, :cond_1c6
if-eqz v29, :cond_1a9
const-wide/16 v19, 0x4
add-long v7, v31, v19
.line 216
invoke-static {v0, v1, v7, v8}, Lcom/facebook/soloader/MinElf;->getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v7
goto :goto_1b1
:cond_1a9
const-wide/16 v19, 0x4
add-long v7, v31, v25
.line 217
invoke-static {v0, v1, v7, v8}, Lcom/facebook/soloader/MinElf;->get64(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
move-result-wide v7
:goto_1b1
add-long/2addr v7, v4
.line 219
invoke-static {v0, v1, v7, v8}, Lcom/facebook/soloader/MinElf;->getSz(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)Ljava/lang/String;
move-result-object v7
aput-object v7, v2, v9
const v7, 0x7fffffff
if-eq v9, v7, :cond_1c0
add-int/lit8 v9, v9, 0x1
goto :goto_1cb
.line 221
:cond_1c0
new-instance v0, Lcom/facebook/soloader/MinElf$ElfError;
invoke-direct {v0, v6}, Lcom/facebook/soloader/MinElf$ElfError;-><init>(Ljava/lang/String;)V
throw v0
:cond_1c6
const v7, 0x7fffffff
const-wide/16 v19, 0x4
:goto_1cb
if-eqz v29, :cond_1d0
move-wide/from16 v12, v25
goto :goto_1d2
:cond_1d0
const-wide/16 v12, 0x10
:goto_1d2
add-long v31, v31, v12
const-wide/16 v21, 0x0
cmp-long v8, v10, v21
if-nez v8, :cond_1e3
if-ne v9, v3, :cond_1dd
return-object v2
.line 231
:cond_1dd
new-instance v0, Lcom/facebook/soloader/MinElf$ElfError;
invoke-direct {v0, v6}, Lcom/facebook/soloader/MinElf$ElfError;-><init>(Ljava/lang/String;)V
throw v0
:cond_1e3
move-wide/from16 v7, v21
goto :goto_18b
.line 201
:cond_1e6
new-instance v0, Lcom/facebook/soloader/MinElf$ElfError;
const-string v1, "did not find file offset of DT_STRTAB table"
invoke-direct {v0, v1}, Lcom/facebook/soloader/MinElf$ElfError;-><init>(Ljava/lang/String;)V
throw v0
.line 165
:cond_1ee
new-instance v0, Lcom/facebook/soloader/MinElf$ElfError;
const-string v1, "Dynamic section string-table not found"
invoke-direct {v0, v1}, Lcom/facebook/soloader/MinElf$ElfError;-><init>(Ljava/lang/String;)V
throw v0
:cond_1f6
const-wide/16 v19, 0x4
move/from16 v8, v29
move-wide/from16 v9, v31
goto/16 :goto_c3
.line 132
:cond_1fe
new-instance v0, Lcom/facebook/soloader/MinElf$ElfError;
const-string v1, "ELF file does not contain dynamic linking information"
invoke-direct {v0, v1}, Lcom/facebook/soloader/MinElf$ElfError;-><init>(Ljava/lang/String;)V
throw v0
.line 74
:cond_206
new-instance v0, Lcom/facebook/soloader/MinElf$ElfError;
const-string v1, "file is not ELF"
invoke-direct {v0, v1}, Lcom/facebook/soloader/MinElf$ElfError;-><init>(Ljava/lang/String;)V
goto :goto_20f
:goto_20e
throw v0
:goto_20f
goto :goto_20e
.end method
.method private static get64(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
.registers 5
.annotation system Ldalvik/annotation/Throws;
value = {
Ljava/io/IOException;
}
.end annotation
const/16 v0, 0x8
.line 270
invoke-static {p0, p1, v0, p2, p3}, Lcom/facebook/soloader/MinElf;->read(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;IJ)V
.line 271
invoke-virtual {p1}, Ljava/nio/ByteBuffer;->getLong()J
move-result-wide p0
return-wide p0
.end method
.method private static getSz(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)Ljava/lang/String;
.registers 7
.annotation system Ldalvik/annotation/Throws;
value = {
Ljava/io/IOException;
}
.end annotation
.line 239
new-instance v0, Ljava/lang/StringBuilder;
invoke-direct {v0}, Ljava/lang/StringBuilder;-><init>()V
:goto_5
const-wide/16 v1, 0x1
add-long/2addr v1, p2
.line 241
invoke-static {p0, p1, p2, p3}, Lcom/facebook/soloader/MinElf;->getu8(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)S
move-result p2
if-eqz p2, :cond_14
int-to-char p2, p2
.line 242
invoke-virtual {v0, p2}, Ljava/lang/StringBuilder;->append(C)Ljava/lang/StringBuilder;
move-wide p2, v1
goto :goto_5
.line 245
:cond_14
invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;
move-result-object p0
return-object p0
.end method
.method private static getu16(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)I
.registers 5
.annotation system Ldalvik/annotation/Throws;
value = {
Ljava/io/IOException;
}
.end annotation
const/4 v0, 0x2
.line 282
invoke-static {p0, p1, v0, p2, p3}, Lcom/facebook/soloader/MinElf;->read(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;IJ)V
.line 283
invoke-virtual {p1}, Ljava/nio/ByteBuffer;->getShort()S
move-result p0
const p1, 0xffff
and-int/2addr p0, p1
return p0
.end method
.method private static getu32(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)J
.registers 5
.annotation system Ldalvik/annotation/Throws;
value = {
Ljava/io/IOException;
}
.end annotation
const/4 v0, 0x4
.line 276
invoke-static {p0, p1, v0, p2, p3}, Lcom/facebook/soloader/MinElf;->read(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;IJ)V
.line 277
invoke-virtual {p1}, Ljava/nio/ByteBuffer;->getInt()I
move-result p0
int-to-long p0, p0
const-wide p2, 0xffffffffL
and-long/2addr p0, p2
return-wide p0
.end method
.method private static getu8(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;J)S
.registers 5
.annotation system Ldalvik/annotation/Throws;
value = {
Ljava/io/IOException;
}
.end annotation
const/4 v0, 0x1
.line 288
invoke-static {p0, p1, v0, p2, p3}, Lcom/facebook/soloader/MinElf;->read(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;IJ)V
.line 289
invoke-virtual {p1}, Ljava/nio/ByteBuffer;->get()B
move-result p0
and-int/lit16 p0, p0, 0xff
int-to-short p0, p0
return p0
.end method
.method private static read(Ljava/nio/channels/FileChannel;Ljava/nio/ByteBuffer;IJ)V
.registers 8
.annotation system Ldalvik/annotation/Throws;
value = {
Ljava/io/IOException;
}
.end annotation
const/4 v0, 0x0
.line 250
invoke-virtual {p1, v0}, Ljava/nio/ByteBuffer;->position(I)Ljava/nio/Buffer;
.line 251
invoke-virtual {p1, p2}, Ljava/nio/ByteBuffer;->limit(I)Ljava/nio/Buffer;
.line 253
:goto_7
invoke-virtual {p1}, Ljava/nio/ByteBuffer;->remaining()I
move-result p2
if-lez p2, :cond_17
.line 254
invoke-virtual {p0, p1, p3, p4}, Ljava/nio/channels/FileChannel;->read(Ljava/nio/ByteBuffer;J)I
move-result p2
const/4 v1, -0x1
if-eq p2, v1, :cond_17
int-to-long v1, p2
add-long/2addr p3, v1
goto :goto_7
.line 261
:cond_17
invoke-virtual {p1}, Ljava/nio/ByteBuffer;->remaining()I
move-result p0
if-gtz p0, :cond_21
.line 265
invoke-virtual {p1, v0}, Ljava/nio/ByteBuffer;->position(I)Ljava/nio/Buffer;
return-void
.line 262
:cond_21
new-instance p0, Lcom/facebook/soloader/MinElf$ElfError;
const-string p1, "ELF file truncated"
invoke-direct {p0, p1}, Lcom/facebook/soloader/MinElf$ElfError;-><init>(Ljava/lang/String;)V
goto :goto_2a
:goto_29
throw p0
:goto_2a
goto :goto_29
.end method