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libmach: initial arm64 support

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cinap_lenrek 2019-05-03 21:00:17 +02:00
parent 9920ecc04b
commit 14b69dcde0
7 changed files with 988 additions and 2 deletions
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80
sys/src/libmach/7.c Normal file
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/*
* arm definition
*/
#include <u.h>
#include <libc.h>
#include <bio.h>
#include <mach.h>
#include "/arm64/include/ureg.h"
#define REGOFF(x) (uintptr)(&((struct Ureg *) 0)->x)
#define SP REGOFF(sp)
#define PC REGOFF(pc)
#define REGSIZE sizeof(struct Ureg)
Reglist arm64reglist[] =
{
{"TYPE", REGOFF(type), RINT|RRDONLY, 'Y'},
{"PSR", REGOFF(psr), RINT|RRDONLY, 'Y'},
{"PC", PC, RINT, 'Y'},
{"SP", SP, RINT, 'Y'},
{"R30", REGOFF(r30), RINT, 'Y'},
{"R29", REGOFF(r29), RINT, 'Y'},
{"R28", REGOFF(r28), RINT, 'Y'},
{"R27", REGOFF(r27), RINT, 'Y'},
{"R26", REGOFF(r26), RINT, 'Y'},
{"R25", REGOFF(r25), RINT, 'Y'},
{"R24", REGOFF(r24), RINT, 'Y'},
{"R23", REGOFF(r23), RINT, 'Y'},
{"R22", REGOFF(r22), RINT, 'Y'},
{"R21", REGOFF(r21), RINT, 'Y'},
{"R20", REGOFF(r20), RINT, 'Y'},
{"R19", REGOFF(r19), RINT, 'Y'},
{"R18", REGOFF(r18), RINT, 'Y'},
{"R17", REGOFF(r17), RINT, 'Y'},
{"R16", REGOFF(r16), RINT, 'Y'},
{"R15", REGOFF(r15), RINT, 'Y'},
{"R14", REGOFF(r14), RINT, 'Y'},
{"R13", REGOFF(r13), RINT, 'Y'},
{"R12", REGOFF(r12), RINT, 'Y'},
{"R11", REGOFF(r11), RINT, 'Y'},
{"R10", REGOFF(r10), RINT, 'Y'},
{"R9", REGOFF(r9), RINT, 'Y'},
{"R8", REGOFF(r8), RINT, 'Y'},
{"R7", REGOFF(r7), RINT, 'Y'},
{"R6", REGOFF(r6), RINT, 'Y'},
{"R5", REGOFF(r5), RINT, 'Y'},
{"R4", REGOFF(r4), RINT, 'Y'},
{"R3", REGOFF(r3), RINT, 'Y'},
{"R2", REGOFF(r2), RINT, 'Y'},
{"R1", REGOFF(r1), RINT, 'Y'},
{"R0", REGOFF(r0), RINT, 'Y'},
{ 0 }
};
/* the machine description */
Mach marm64 =
{
"arm64",
MARM64, /* machine type */
arm64reglist, /* register set */
REGSIZE, /* register set size */
0, /* fp register set size */
"PC", /* name of PC */
"SP", /* name of SP */
"R30", /* name of link register */
"setSB", /* static base register name */
0, /* static base register value */
0x10000, /* page size (for segment alignment) */
0xFFFFFFFF80000000ULL, /* kernel base */
0xFFFF800000000000ULL, /* kernel text mask */
0x00007FFFFFFF0000ULL, /* user stack top */
4, /* quantization of pc */
8, /* szaddr */
8, /* szreg */
4, /* szfloat */
8, /* szdouble */
};

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sys/src/libmach/7db.c Normal file
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#include <u.h>
#include <libc.h>
#include <bio.h>
#include <mach.h>
typedef struct Opcode Opcode;
struct Opcode
{
char *p;
char *o;
char *a;
};
typedef struct Instr Instr;
struct Instr
{
Opcode *op;
Map *map;
uvlong addr;
ulong w;
char *curr; /* fill point in buffer */
char *end; /* end of buffer */
};
static void format(char*, Instr*, char*);
static char FRAMENAME[] = ".frame";
/*
* Arm64-specific debugger interface
*/
static char* arm64excep(Map*, Rgetter);
static int arm64foll(Map*, uvlong, Rgetter, uvlong*);
static int arm64inst(Map*, uvlong, char, char*, int);
static int arm64das(Map*, uvlong, char*, int);
static int arm64instlen(Map*, uvlong);
/*
* Debugger interface
*/
Machdata arm64mach =
{
{0x00, 0x00, 0x20, 0xD4}, /* break point 0xD4200000 */
4, /* break point size */
leswab, /* short to local byte order */
leswal, /* long to local byte order */
leswav, /* long to local byte order */
risctrace, /* C traceback */
riscframe, /* Frame finder */
arm64excep, /* print exception */
0, /* breakpoint fixup */
0, /* single precision float printer */
0, /* double precision float printer */
arm64foll, /* following addresses */
arm64inst, /* print instruction */
arm64das, /* dissembler */
arm64instlen, /* instruction size */
};
static Opcode opcodes[] =
{
"0AA10000AAAAAAAAAAAAAAAAAAAddddd", "ADR", "$%A,R%d",
"1PP10000PPPPPPPPPPPPPPPPPPPddddd", "ADRP", "$%P,R%d",
"00011000lllllllllllllllllllddddd", "MOVWU", "%l,R%d",
"01011000LLLLLLLLLLLLLLLLLLLddddd", "MOV", "%L,R%d",
"10011000lllllllllllllllllllddddd", "MOVW", "%l,R%d",
"11011000lllllllllllllllllllddddd", "PRFM", "%l,$%d",
"1111100100uuuuuuuuuuuu11111ddddd", "MOV", "R%d,%u(SP)",
"1111100100uuuuuuuuuuuunnnnnddddd", "MOV", "R%d,%u(R%n)",
"WW11100100uuuuuuuuuuuu11111ddddd", "MOV%WU", "R%d,%u(SP)",
"WW11100100uuuuuuuuuuuunnnnnddddd", "MOV%WU", "R%d,%u(R%n)",
"1111100101uuuuuuuuuuuu11111ddddd", "MOV", "%u(SP),R%d",
"1111100101uuuuuuuuuuuunnnnnddddd", "MOV", "%u(R%n),R%d",
"WW11100101uuuuuuuuuuuu11111ddddd", "MOV%WU", "%u(SP),R%d",
"WW11100101uuuuuuuuuuuunnnnnddddd", "MOV%WU", "%u(R%n),R%d",
"WW11100110uuuuuuuuuuuu11111ddddd", "MOV%W", "%u(SP),R%d",
"WW11100110uuuuuuuuuuuunnnnnddddd", "MOV%W", "%u(R%n),R%d",
"11111000000ooooooooo0011111ddddd", "MOV", "R%d,%o(SP)",
"11111000000ooooooooo00nnnnnddddd", "MOV", "R%d,%o(R%n)",
"WW111000000ooooooooo0011111ddddd", "MOV%W", "R%d,%o(SP)",
"WW111000000ooooooooo00nnnnnddddd", "MOV%W", "R%d,%o(R%n)",
"11111000010ooooooooo0011111ddddd", "MOV", "%o(SP),R%d",
"11111000010ooooooooo00nnnnnddddd", "MOV", "%o(R%n),R%d",
"WW111000010ooooooooo0011111ddddd", "MOV%WU", "%o(SP),R%d",
"WW111000010ooooooooo00nnnnnddddd", "MOV%WU", "%o(R%n),R%d",
"WW111000100ooooooooo0011111ddddd", "MOV%W", "%o(SP),R%d",
"WW111000100ooooooooo00nnnnnddddd", "MOV%W", "%o(R%n),R%d",
"11111000000ooooooooo0111111ddddd", "MOV", "R%d,(SP)%o!",
"WW111000000ooooooooo0111111ddddd", "MOV%WU", "R%d,(SP)%o!",
"WW111000000ooooooooo01nnnnnddddd", "MOV%WU", "R%d,(R%n)%o!",
"11111000000ooooooooo1111111ddddd", "MOV", "R%d,%o(SP)!",
"WW111000000ooooooooo1111111ddddd", "MOV%WU", "R%d,%o(SP)!",
"WW111000000ooooooooo11nnnnnddddd", "MOV%WU", "R%d,%o(R%n)!",
"11111000010ooooooooo0111111ddddd", "MOV", "(SP)%o!,R%d",
"11111000010ooooooooo01nnnnnddddd", "MOV", "(R%n)%o!,R%d",
"WW111000010ooooooooo0111111ddddd", "MOV%WU", "(SP)%o!,R%d",
"WW111000010ooooooooo01nnnnnddddd", "MOV%WU", "(R%n)%o!,R%d",
"WW111000100ooooooooo0111111ddddd", "MOV%W", "(SP)%o!,R%d",
"WW111000100ooooooooo01nnnnnddddd", "MOV%W", "(R%n)%o!,R%d",
"11111000010ooooooooo1111111ddddd", "MOV", "%o(SP)!,R%d",
"11111000010ooooooooo11nnnnnddddd", "MOV", "%o(R%n)!,R%d",
"WW111000010ooooooooo1111111ddddd", "MOV%WU", "%o(SP)!,R%d",
"WW111000010ooooooooo11nnnnnddddd", "MOV%WU", "%o(R%n)!,R%d",
"WW111000100ooooooooo1111111ddddd", "MOV%W", "%o(SP)!,R%d",
"WW111000100ooooooooo11nnnnnddddd", "MOV%W", "%o(R%n)!,R%d",
"11111000001mmmmmeeei10nnnnnddddd", "MOV", "R%d,(R%n)(R%m%e)",
"11111000111mmmmmeeei10nnnnnddddd", "MOV", "(R%n)(R%m%e),R%d",
"WW111000001mmmmmeeei10nnnnnddddd", "MOV%W", "R%d,(R%n)(R%m%e)",
"WW111000011mmmmmeeei10nnnnnddddd", "MOV%WU", "(R%n)(R%m%e),R%d",
"WW111000101mmmmmeeei10nnnnnddddd", "MOV%W", "(R%n)(R%m%e),R%d",
"WW111000111mmmmmeeei10nnnnnddddd", "MOV%WW", "(R%n)(R%m%e),R%d",
"W00100101ssKKKKKKKKKKKKKKKKddddd", "MOVN%W", "$%K,R%d",
"W10100101ssKKKKKKKKKKKKKKKKddddd", "MOVZ%W", "$%K,R%d",
"W11100101ssKKKKKKKKKKKKKKKKddddd", "MOVK%W", "$%K,R%d",
"W0010001--00000000000011111ddddd", "MOV%W", "SP,R%d",
"W0010001--000000000000nnnnn11111", "MOV%W", "R%n,SP",
"W0010001ssIIIIIIIIIIII1111111111", "ADD%W", "$%I,SP,SP",
"W0010001ssIIIIIIIIIIII11111ddddd", "ADD%W", "$%I,SP,R%d",
"W0010001ssIIIIIIIIIIIInnnnn11111", "ADD%W", "$%I,R%n,SP",
"W0110001ssIIIIIIIIIIII1111111111", "ADDS%W", "$%I,SP,SP",
"W0110001ssIIIIIIIIIIII11111ddddd", "ADDS%W", "$%I,SP,R%d",
"W0110001ssIIIIIIIIIIIInnnnn11111", "ADDS%W", "$%I,R%n,SP",
"W1010001ssIIIIIIIIIIII1111111111", "SUB%W", "$%I,SP,SP",
"W1010001ssIIIIIIIIIIII11111ddddd", "SUB%W", "$%I,SP,R%d",
"W1010001ssIIIIIIIIIIIInnnnn11111", "SUB%W", "$%I,R%n,SP",
"W1110001ssIIIIIIIIIIII1111111111", "CMP%W", "$%I,SP",
"W1110001ssIIIIIIIIIIIInnnnn11111", "CMP%W", "$%I,R%n",
"W1110001ssIIIIIIIIIIII11111ddddd", "SUBS%W", "$%I,SP,R%d",
"W0010001ssIIIIIIIIIIIInnnnnddddd", "ADD%W", "$%I,R%n,R%d",
"W0110001ssIIIIIIIIIIIInnnnnddddd", "ADDS%W", "$%I,R%n,R%d",
"W1010001ssIIIIIIIIIIIInnnnnddddd", "SUB%W", "$%I,R%n,R%d",
"W1110001ssIIIIIIIIIIIInnnnnddddd", "SUBS%W", "$%I,R%n,R%d",
"W00100100MMMMMMMMMMMMMnnnnn11111", "AND%W", "$%M,R%n,SP",
"W01100100MMMMMMMMMMMMMnnnnn11111", "ORR%W", "$%M,R%n,SP",
"W10100100MMMMMMMMMMMMMnnnnn11111", "EOR%W", "$%M,R%n,SP",
"W11100100MMMMMMMMMMMMMnnnnn11111", "ANDS%W", "$%M,R%n,SP",
"W00100100MMMMMMMMMMMMMnnnnnddddd", "AND%W", "$%M,R%n,R%d",
"W01100100MMMMMMMMMMMMMnnnnnddddd", "ORR%W", "$%M,R%n,R%d",
"W10100100MMMMMMMMMMMMMnnnnnddddd", "EOR%W", "$%M,R%n,R%d",
"W11100100MMMMMMMMMMMMMnnnnnddddd", "ANDS%W", "$%M,R%n,R%d",
"1001001101000000011111nnnnnddddd", "SXTW", "R%n,R%d",
"0101001100iiiiii011111nnnnnddddd", "LSRW", "$%i,R%n,R%d",
"1101001101iiiiii111111nnnnnddddd", "LSR", "$%i,R%n,R%d",
"W00100110-iiiiiijjjjjjnnnnnddddd", "SBFM%W", "$%i,$%j,R%n,R%d",
"W01100110-iiiiiijjjjjjnnnnnddddd", "BFM%W", "$%i,$%j,R%n,R%d",
"W10100110-iiiiiijjjjjjnnnnnddddd", "UBFM%W", "$%i,$%j,R%n,R%d",
"W1011010000mmmmm00000011111ddddd", "NGC%W", "R%m,R%d",
"W1111010000mmmmm00000011111ddddd", "NGCS%W", "R%m,R%d",
"W0011010000mmmmm000000nnnnnddddd", "ADC%W", "R%m,R%n,R%d",
"W0111010000mmmmm000000nnnnnddddd", "ADCS%W", "R%m,R%n,R%d",
"W1011010000mmmmm000000nnnnnddddd", "SBC%W", "R%m,R%n,R%d",
"W1111010000mmmmm000000nnnnnddddd", "SBCS%W", "R%m,R%n,R%d",
"W0101011ss0mmmmmiiiiiinnnnn11111", "CMN%W", "R%m%s,R%n",
"W1101011ss0mmmmmiiiiiinnnnn11111", "CMP%W", "R%m%s,R%n",
"W1001011ss0mmmmmiiiiii11111ddddd", "NEG%W", "R%m%s,R%d",
"W1101011ss0mmmmmiiiiii11111ddddd", "NEGS%W", "R%m%s,R%d",
"W0001011ss0mmmmmiiiiiinnnnnddddd", "ADD%W", "R%m%s,R%n,R%d",
"W0101011ss0mmmmmiiiiiinnnnnddddd", "ADDS%W", "R%m%s,R%n,R%d",
"W1001011ss0mmmmmiiiiiinnnnnddddd", "SUB%W", "R%m%s,R%n,R%d",
"W1101011ss0mmmmmiiiiiinnnnnddddd", "SUBS%W", "R%m%s,R%n,R%d",
"W0001011001mmmmmeeeiii1111111111", "ADD%W", "R%m%e,SP,SP",
"W0001011001mmmmmeeeiii11111ddddd", "ADD%W", "R%m%e,SP,R%d",
"W0001011001mmmmmeeeiiinnnnn11111", "ADD%W", "R%m%e,R%n,SP",
"W0101011001mmmmmeeeiii1111111111", "ADDS%W", "R%m%e,SP,SP",
"W0101011001mmmmmeeeiii11111ddddd", "ADDS%W", "R%m%e,SP,R%d",
"W0101011001mmmmmeeeiiinnnnn11111", "ADDS%W", "R%m%e,R%n,SP",
"W1001011001mmmmmeeeiii1111111111", "SUB%W", "R%m%e,SP,SP",
"W1001011001mmmmmeeeiii11111ddddd", "SUB%W", "R%m%e,SP,R%d",
"W1001011001mmmmmeeeiiinnnnn11111", "SUB%W", "R%m%e,R%n,SP",
"W1101011001mmmmmeeeiii1111111111", "SUBS%W", "R%m%e,SP,SP",
"W1101011001mmmmmeeeiii11111ddddd", "SUBS%W", "R%m%e,SP,R%d",
"W1101011001mmmmmeeeiiinnnnn11111", "SUBS%W", "R%m%e,R%n,SP",
"W0001011001mmmmmeeeiiinnnnnddddd", "ADD%W", "R%m%e,R%n,R%d",
"W0101011001mmmmmeeeiiinnnnnddddd", "ADDS%W", "R%m%e,R%n,R%d",
"W1001011001mmmmmeeeiiinnnnnddddd", "SUB%W", "R%m%e,R%n,R%d",
"W1101011001mmmmmeeeiiinnnnnddddd", "SUBS%W", "R%m%e,R%n,R%d",
"W0101010000mmmmm-0000011111ddddd", "MOV%W", "R%m,R%d",
"W0101010ss1mmmmmiiiiii11111ddddd", "NVM%W", "R%m%s,R%d",
"W1101010ss0mmmmmiiiiiinnnnn11111", "TST%W", "R%m%s,R%n",
"W0001010ss0mmmmmiiiiiinnnnnddddd", "AND%W", "R%m%s,R%n,R%d",
"W1101010ss0mmmmmiiiiiinnnnnddddd", "ANDS%W", "R%m%s,R%n,R%d",
"W0001010ss1mmmmmiiiiiinnnnnddddd", "BIC%W", "R%m%s,R%n,R%d",
"W1101010ss1mmmmmiiiiiinnnnnddddd", "BICS%W", "R%m%s,R%n,R%d",
"W1001010ss0mmmmmiiiiiinnnnnddddd", "EOR%W", "R%m%s,R%n,R%d",
"W1001010ss1mmmmmiiiiiinnnnnddddd", "EON%W", "R%m%s,R%n,R%d",
"W0101010ss0mmmmmiiiiiinnnnnddddd", "ORR%W", "R%m%s,R%n,R%d",
"W0101010ss1mmmmmiiiiiinnnnnddddd", "ORN%W", "R%m%s,R%n,R%d",
"W0011010110mmmmm001000nnnnnddddd", "LSL%W", "R%m,R%n,R%d",
"W0011010110mmmmm001001nnnnnddddd", "LSR%W", "R%m,R%n,R%d",
"W0011010110mmmmm001010nnnnnddddd", "ASR%W", "R%m,R%n,R%d",
"W0011010110mmmmm001011nnnnnddddd", "ROR%W", "R%m,R%n,R%d",
"W0011010110mmmmm000010nnnnnddddd", "UDIV%W", "R%m,R%n,R%d",
"W0011010110mmmmm000011nnnnnddddd", "SDIV%W", "R%m,R%n,R%d",
"W0011011000mmmmm011111nnnnnddddd", "MUL%W", "R%m,R%n,R%d",
"W0011011000mmmmm111111nnnnnddddd", "MNEG%W", "R%m,R%n,R%d",
"W0011011000mmmmm0aaaaannnnnddddd", "MADD%W", "R%m,R%n,R%a,R%d",
"W0011011000mmmmm1aaaaannnnnddddd", "MSUB%W", "R%m,R%n,R%a,R%d",
"10011011001mmmmm011111nnnnnddddd", "SMULL", "R%m,R%n,R%d",
"10011011001mmmmm111111nnnnnddddd", "SMNEGL", "R%m,R%n,R%d",
"10011011001mmmmm0aaaaannnnnddddd", "SMADDL", "R%m,R%n,R%a,R%d",
"10011011001mmmmm1aaaaannnnnddddd", "SMSUBL", "R%m,R%n,R%a,R%d",
"10011011101mmmmm011111nnnnnddddd", "UMULL", "R%m,R%n,R%d",
"10011011101mmmmm111111nnnnnddddd", "UMNEGL", "R%m,R%n,R%d",
"10011011101mmmmm0aaaaannnnnddddd", "UMADDL", "R%m,R%n,R%a,R%d",
"10011011101mmmmm1aaaaannnnnddddd", "UMSUBL", "R%m,R%n,R%a,R%d",
"W0110100TTTTTTTTTTTTTTTTTTTddddd", "CBZ%W", "R%d,%T",
"W0110101TTTTTTTTTTTTTTTTTTTddddd", "CBNZ%W", "R%d,%T",
"01010100TTTTTTTTTTTTTTTTTTT0CCCC", "B%C", "%T",
"000101TTTTTTTTTTTTTTTTTTTTTTTTTT", "B", "%T",
"100101TTTTTTTTTTTTTTTTTTTTTTTTTT", "BL", "%T",
"1101011000011111000000nnnnn00000", "BR", "R%n",
"1101011000111111000000nnnnn00000", "BLR", "R%n",
"11010110010111110000001111000000", "RETURN", nil,
"1101011001011111000000nnnnn00000", "RET", "R%n",
"11010110100111110000001111100000", "ERET", nil,
"11010110101111110000001111100000", "DRPS", nil,
"11010100000iiiiiiiiiiiiiiii00001", "SVC", "$%i",
"11010100000iiiiiiiiiiiiiiii00010", "HVC", "$%i",
"11010100000iiiiiiiiiiiiiiii00011", "SMC", "$%i",
"11010100001iiiiiiiiiiiiiiii00000", "BRK", "$%i",
"11010100010iiiiiiiiiiiiiiii00000", "HLT", "$%i",
"11010100101iiiiiiiiiiiiiiii00001", "DCPS1", "$%i",
"11010100101iiiiiiiiiiiiiiii00010", "DCPS2", "$%i",
"11010100101iiiiiiiiiiiiiiii00011", "DCPS3", "$%i",
"11010101000000110010000000011111", "NOP", nil,
"11010101000000110010000000111111", "YIELD", nil,
"11010101000000110010000001011111", "WFE", nil,
"11010101000000110010000001111111", "WFI", nil,
"11010101000000110010000010011111", "SEV", nil,
"11010101000000110010000010111111", "SEVL", nil,
"11010101000000110011xxxx01011111", "CLREX", "$%x",
"11010101000000110011xxxx10011111", "DSB", "$%x",
"11010101000000110011xxxx10111111", "DMB", "$%x",
"11010101000000110011xxxx11011111", "ISB", "$%x",
"1101010100001YYYYYYYYYYYYYY11111", "SYS", "%Y",
"1101010100001YYYYYYYYYYYYYYddddd", "SYS", "R%d,%Y",
"1101010100101YYYYYYYYYYYYYYddddd", "SYSL", "%Y,R%d",
"11010101000000000100xxxx10111111", "MSR", "$%x,SP",
"11010101000000110100xxxx11011111", "MSR", "$%x,DAIFSet",
"11010101000000110100xxxx11111111", "MSR", "$%x,DAIFClr",
"11010101000YYYYYYYYYYYYYYYYddddd", "MSR", "R%d,%Y",
"11010101001YYYYYYYYYYYYYYYYddddd", "MRS", "%Y,R%d",
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", "WORD", "$%x",
};
#define SYSARG5(op0,op1,Cn,Cm,op2) ((op0)<<19|(op1)<<16|(Cn)<<12|(Cm)<<8|(op2)<<5)
static ulong
smask(char *s, char c)
{
ulong m;
int i;
m = 0;
for(i=0; i<32 && *s != '\0'; i++, s++)
m |= (*s == c)<<(31-i);
return m;
}
static int
nbits(ulong v)
{
int n = 0;
while(v != 0){
v &= v-1;
n++;
}
return n;
}
static int
nones(ulong v)
{
int n = 0;
while(v & 1){
v >>= 1;
n++;
}
return n;
}
static int
nshift(ulong m)
{
if(m == 0 || m == ~0UL)
return 0;
return nones(~m);
}
static ulong
unshift(ulong w, ulong m)
{
int s = nshift(m);
w >>= s, m >>= s;
if((m+1 & m) != 0){ // 0bxxx0000yyyyyy -> 0byyyyyyxxx
ulong b = (1UL<<nones(m))-1;
return ((w & b) << nbits(m & ~b)) | unshift(w, m & ~b);
}
return w & m;
}
static long
sext(ulong u, int n)
{
long l = (long)u;
if(n > 0){
l <<= sizeof(l)*8 - n;
l >>= sizeof(l)*8 - n;
}
return l;
}
static char*
arm64excep(Map *, Rgetter)
{
// uvlong c = (*rget)(map, "TYPE");
return "???";
}
static int
decode(Map *map, uvlong pc, Instr *i)
{
static ulong tab[2*nelem(opcodes)];
static int once;
ulong w, j;
if(!once){
Opcode *o;
/* precalculate value/mask table */
for(j=0, o=opcodes; j<nelem(tab); j+=2, o++){
tab[j] = smask(o->p, '1');
tab[j|1] = tab[j] | smask(o->p, '0');
}
once = 1;
}
if(get4(map, pc, &w) < 0) {
werrstr("can't read instruction: %r");
return -1;
}
i->addr = pc;
i->map = map;
i->w = w;
for(j=0; j<nelem(tab); j+=2){
if((w & tab[j|1]) == tab[j]){
i->op = &opcodes[j/2];
return 1;
}
}
/* should not happen */
return 0;
}
#pragma varargck argpos bprint 2
static void
bprint(Instr *i, char *fmt, ...)
{
va_list arg;
va_start(arg, fmt);
i->curr = vseprint(i->curr, i->end, fmt, arg);
va_end(arg);
}
static
char* shtype[4] =
{
"<<", ">>", "->", "@>"
};
static
char* rextype[8] =
{
"UB", "UH", "UW", "UX",
"SB", "SH", "SW", "SX"
};
static
char* scond[16] =
{
"EQ", "NE", "HS", "LO",
"MI", "PL", "VS", "VC",
"HI", "LS", "GE", "LT",
"GT", "LE", "", "NV",
};
static uvlong
decodebitmask(int n, int s, int r)
{
uvlong w;
int e;
if(n)
n = 6;
else {
for(n = 5; n >= 1 && ((~s & 0x3F) & (1<<n)) == 0; n--)
;
}
e = 1 << n;
s &= e-1;
r &= e-1;
w = 1ULL << s;
w |= w-1;
if(r != 0){
w = (w >> r) | (w << (e-r));
if(e < 64)
w &= (1ULL << e)-1;
}
while(e < 64){
w |= w << e;
e <<= 1;
}
return w;
}
static void
format(char *mnemonic, Instr *i, char *f)
{
Symbol s;
uvlong v;
ulong w, u, m;
if(mnemonic)
format(0, i, mnemonic);
if(f == 0)
return;
if(mnemonic)
if(i->curr < i->end)
*i->curr++ = '\t';
for ( ; *f && i->curr < i->end; f++) {
if(*f != '%') {
*i->curr++ = *f;
continue;
}
m = smask(i->op->p, *++f);
u = unshift(i->w, m);
switch (*f) {
case 'C': // Condition
bprint(i, "%s", scond[u & 15]);
break;
case 'W': // Width
if(nbits(m) == 1) u += 2;
u &= 3;
if(u < 3)
*i->curr++ = "BHW"[u];
break;
case 'd': // Register Numbers
case 'n':
case 'a':
case 'm':
bprint(i, "%lud", u);
break;
case 's': // Register shift
w = unshift(i->w, smask(i->op->p, 'i'));
if(w != 0)
bprint(i, "%s%lud", shtype[u & 3], w);
break;
case 'e': // Register extension
u &= 7;
bprint(i, ".%s", rextype[u]);
w = unshift(i->w, smask(i->op->p, 'i'));
if(w != 0 && u == 2+(i->w>>31))
bprint(i, "<<%lud", w);
break;
case 'M': // Bitmask
v = decodebitmask((u>>12)&1, u&0x3F, (u>>6)&0x3F);
if((i->w & (1<<31)) == 0)
v &= 0xFFFFFFFF;
bprint(i, "%llux", v);
break;
case 'I': // Shifted Immediate (12 bit)
case 'K': // Shifted Immediate (16 bit)
w = unshift(i->w, smask(i->op->p, 's'));
if(u != 0 && w != 0)
bprint(i, "(%lux<<%ld)", u, w*(*f == 'I' ? 12 : 16));
else
bprint(i, "%lud", u);
break;
case 'o': // Signed byte offset
bprint(i, "%ld", sext(u, nbits(m)));
break;
case 'u': // Unsigned offset
u <<= (i->w >> 30)&3;
/* wet floor */
case 'i': // Decimal
case 'j':
bprint(i, "%lud", u);
break;
case 'x': // Hex
bprint(i, "%lux", u);
break;
case 'l': // 32-bit Literal
if(get4(i->map, i->addr + sext(u, nbits(m))*4, &w) < 0)
goto Ptext;
bprint(i, "$%lux", w);
break;
case 'L': // 64-bit Literal
if(get8(i->map, i->addr + sext(u, nbits(m))*4, &v) < 0)
goto Ptext;
bprint(i, "$%llux", v);
break;
case 'T': // Text address (PC relative)
Ptext:
v = i->addr + sext(u, nbits(m))*4;
if(findsym(v, CTEXT, &s)){
bprint(i, "%s", s.name);
if(v < s.value)
bprint(i, "%llx", v - s.value);
else if(v > s.value)
bprint(i, "+%llx", v - s.value);
bprint(i, "(SB)");
break;
}
bprint(i, "%llux(SB)", v);
break;
case 'A': // Data address (PC relative)
v = i->addr + sext(u, nbits(m));
goto Pdata;
case 'P': // Page address (PC relative)
v = i->addr + ((vlong)sext(u, nbits(m)) << 12);
Pdata:
if(findsym(v, CANY, &s)){
bprint(i, "%s", s.name);
if(v < s.value)
bprint(i, "%llx", v - s.value);
else if(v > s.value)
bprint(i, "+%llx", v - s.value);
bprint(i, "(SB)");
break;
}
bprint(i, "%llux(SB)", v);
break;
case 'Y':
if(nbits(m) == 14){ // SYS/SYSL operands
bprint(i, "%lud,%lud,%lud,%lud",
(u>>(4+4+3))&7, // op1
(u>>(4+3))&15, // CRn
(u>>3)&15, // CRm
(u)&7); // op2
break;
}
/* see /sys/src/cmd/7c/7.out.h */
switch(i->w & m){
case SYSARG5(3,3,4,2,1): bprint(i, "DAIF"); break;
case SYSARG5(3,3,4,2,0): bprint(i, "NZCV"); break;
case SYSARG5(3,3,4,4,1): bprint(i, "FPSR"); break;
case SYSARG5(3,3,4,4,0): bprint(i, "FPCR"); break;
case SYSARG5(3,0,4,0,0): bprint(i, "SPSR_EL1"); break;
case SYSARG5(3,0,4,0,1): bprint(i, "ELR_EL1"); break;
case SYSARG5(3,4,4,0,0): bprint(i, "SPSR_EL2"); break;
case SYSARG5(3,4,4,0,1): bprint(i, "ELR_EL2"); break;
case SYSARG5(3,0,4,2,2): bprint(i, "CurrentEL"); break;
case SYSARG5(3,0,4,1,0): bprint(i, "SP_EL0"); break;
case SYSARG5(3,0,4,2,0): bprint(i, "SPSel"); break;
default: bprint(i, "SPR(%lux)", i->w & m);
}
break;
case '\0':
*i->curr++ = '%';
return;
default:
bprint(i, "%%%c", *f);
break;
}
}
*i->curr = 0;
}
static int
printins(Map *map, uvlong pc, char *buf, int n)
{
Instr i[1];
i->curr = buf;
i->end = buf+n-1;
if(decode(map, pc, i) < 0)
return -1;
format(i->op->o, i, i->op->a);
return 4;
}
static int
arm64inst(Map *map, uvlong pc, char modifier, char *buf, int n)
{
USED(modifier);
return printins(map, pc, buf, n);
}
static int
arm64das(Map *map, uvlong pc, char *buf, int n)
{
Instr i[1];
i->curr = buf;
i->end = buf+n;
if(decode(map, pc, i) < 0)
return -1;
if(i->end-i->curr > 8)
i->curr = _hexify(buf, i->w, 7);
*i->curr = 0;
return 4;
}
static int
arm64instlen(Map*, uvlong)
{
return 4;
}
static uvlong
readreg(Instr *i, Rgetter rget, int rc)
{
ulong m;
uvlong v;
char reg[4];
snprint(reg, sizeof(reg), "R%lud", unshift(i->w, smask(i->op->p, rc)));
v = (*rget)(i->map, reg);
m = smask(i->op->p, 'W');
if(m != 0 && unshift(i->w, m) == 0)
v &= 0xFFFFFFFFULL;
return v;
}
static int
passcond(Instr *i, Rgetter rget)
{
uvlong psr;
uchar n;
uchar z;
uchar c;
uchar v;
psr = (*rget)(i->map, "PSR");
n = (psr >> 31) & 1;
z = (psr >> 30) & 1;
c = (psr >> 29) & 1;
v = (psr >> 28) & 1;
switch(unshift(i->w, smask(i->op->p, 'C'))) {
default:
case 0: return z;
case 1: return !z;
case 2: return c;
case 3: return !c;
case 4: return n;
case 5: return !n;
case 6: return v;
case 7: return !v;
case 8: return c && !z;
case 9: return !c || z;
case 10: return n == v;
case 11: return n != v;
case 12: return !z && (n == v);
case 13: return z || (n != v);
case 14: return 1;
case 15: return 0;
}
}
static uvlong
jumptarg(Instr *i)
{
ulong m = smask(i->op->p, 'T');
return i->addr + sext(unshift(i->w, m), m)*4;
}
static int
arm64foll(Map *map, uvlong pc, Rgetter rget, uvlong *foll)
{
Instr i[1];
char *o;
if(decode(map, pc, i) < 0)
return -1;
o = i->op->o;
if(strcmp(o, "ERET") == 0)
return -1;
if(strcmp(o, "RET") == 0 || strcmp(o, "BR") == 0 || strcmp(o, "BLR") == 0){
foll[0] = readreg(i, rget, 'n');
return 1;
}
if(strcmp(o, "B") == 0 || strcmp(o, "BL") == 0){
foll[0] = jumptarg(i);
return 1;
}
if(strcmp(o, "B%C") == 0){
if(passcond(i, rget)){
foll[0] = jumptarg(i);
return 1;
}
}
if(strcmp(o, "CBZ%W") == 0){
if(readreg(i, rget, 'd') == 0){
foll[0] = jumptarg(i);
return 1;
}
}
if(strcmp(o, "CBNZ%W") == 0){
if(readreg(i, rget, 'd') != 0){
foll[0] = jumptarg(i);
return 1;
}
}
foll[0] = i->addr+4;
return 1;
}

150
sys/src/libmach/7obj.c Normal file
View File

@ -0,0 +1,150 @@
/*
* 7obj.c - identify and parse an arm64 object file
*/
#include <u.h>
#include <libc.h>
#include <bio.h>
#include <mach.h>
#include "7c/7.out.h"
#include "obj.h"
typedef struct Addr Addr;
struct Addr
{
char type;
char sym;
char name;
};
static Addr addr(Biobuf*);
static char type2char(int);
static void skip(Biobuf*, int);
int
_is7(char *s)
{
return s[0] == (ANAME&0xff) /* aslo = ANAME */
&& s[1] == ((ANAME>>8)&0xff)
&& s[2] == D_FILE /* type */
&& s[3] == 1 /* sym */
&& s[4] == '<'; /* name of file */
}
int
_read7(Biobuf *bp, Prog *p)
{
int as, n;
Addr a;
as = (uchar)Bgetc(bp); /* as */
as |= (uchar)Bgetc(bp)<<8;
if(as <= AXXX || as >= ALAST)
return 0;
p->kind = aNone;
p->sig = 0;
if(as == ANAME || as == ASIGNAME){
if(as == ASIGNAME){
Bread(bp, &p->sig, 4);
p->sig = leswal(p->sig);
}
p->kind = aName;
p->type = type2char(Bgetc(bp)); /* type */
p->sym = Bgetc(bp); /* sym */
n = 0;
for(;;) {
as = Bgetc(bp);
if(as < 0)
return 0;
n++;
if(as == 0)
break;
}
p->id = malloc(n);
if(p->id == 0)
return 0;
Bseek(bp, -n, 1);
if(Bread(bp, p->id, n) != n)
return 0;
return 1;
}
if(as == ATEXT)
p->kind = aText;
else if(as == AGLOBL)
p->kind = aData;
skip(bp, 5); /* reg(1) lineno(4) */
a = addr(bp);
addr(bp);
if(a.type != D_OREG || a.name != D_STATIC && a.name != D_EXTERN)
p->kind = aNone;
p->sym = a.sym;
return 1;
}
static Addr
addr(Biobuf *bp)
{
Addr a;
long off;
a.type = Bgetc(bp); /* a.type */
skip(bp,1); /* reg */
a.sym = Bgetc(bp); /* sym index */
a.name = Bgetc(bp); /* sym type */
switch(a.type){
default:
case D_NONE:
case D_REG:
case D_SP:
case D_FREG:
case D_VREG:
case D_COND:
break;
case D_OREG:
case D_XPRE:
case D_XPOST:
case D_CONST:
case D_BRANCH:
case D_SHIFT:
case D_EXTREG:
case D_ROFF:
case D_SPR:
off = Bgetc(bp);
off |= Bgetc(bp) << 8;
off |= Bgetc(bp) << 16;
off |= Bgetc(bp) << 24;
if(off < 0)
off = -off;
if(a.sym && (a.name==D_PARAM || a.name==D_AUTO))
_offset(a.sym, off);
break;
case D_DCONST:
skip(bp, 8);
break;
case D_SCONST:
skip(bp, NSNAME);
break;
case D_FCONST:
skip(bp, 8);
break;
}
return a;
}
static char
type2char(int t)
{
switch(t){
case D_EXTERN: return 'U';
case D_STATIC: return 'b';
case D_AUTO: return 'a';
case D_PARAM: return 'p';
default: return UNKNOWN;
}
}
static void
skip(Biobuf *bp, int n)
{
while (n-- > 0)
Bgetc(bp);
}

16
sys/src/libmach/executable.c
View File

@ -66,6 +66,7 @@ extern Mach m68020;
extern Mach mi386;
extern Mach mamd64;
extern Mach marm;
extern Mach marm64;
extern Mach mpower;
extern Mach mpower64;
@ -233,6 +234,15 @@ ExecTable exectab[] =
sizeof(Exec),
leswal,
armdotout },
{ R_MAGIC, /* Arm64 7.out and boot image */
"arm64 plan 9 executable",
"arm64 plan 9 dlm",
FARM64,
1,
&marm64,
sizeof(Exec)+8,
nil,
commonllp64 },
{ 0 },
};
@ -375,6 +385,12 @@ commonboot(Fhdr *fp)
fp->name = "ARM plan 9 boot image";
fp->dataddr = _round(fp->txtaddr+fp->txtsz, mach->pgsize);
return;
case FARM64:
fp->type = FARM64B;
fp->txtaddr = fp->entry;
fp->name = "arm64 plan 9 boot image";
fp->dataddr = _round(fp->txtaddr+fp->txtsz, mach->pgsize);
return;
case FPOWER:
fp->type = FPOWERB;
fp->txtaddr = (u32int)fp->entry;

4
sys/src/libmach/mkfile
View File

@ -18,6 +18,7 @@ FILES=\
2\
5\
6\
7\
8\
9\
vdb\
@ -26,6 +27,7 @@ FILES=\
qdb\
2db\
5db\
7db\
8db\
vobj\
kobj\
@ -33,6 +35,7 @@ FILES=\
2obj\
5obj\
6obj\
7obj\
8obj\
9obj\
qobj\
@ -56,6 +59,7 @@ CFLAGS=$CFLAGS -I/sys/src/cmd
2obj.$O: /sys/src/cmd/2c/2.out.h
5obj.$O: /sys/src/cmd/5c/5.out.h
6obj.$O: /sys/src/cmd/6c/6.out.h
7obj.$O: /sys/src/cmd/7c/7.out.h
8obj.$O: /sys/src/cmd/8c/8.out.h
kobj.$O: /sys/src/cmd/kc/k.out.h
qobj.$O: /sys/src/cmd/qc/q.out.h

2
sys/src/libmach/obj.c
View File

@ -33,6 +33,7 @@ int _is2(char*), /* in [$OS].c */
_read2(Biobuf*, Prog*),
_read5(Biobuf*, Prog*),
_read6(Biobuf*, Prog*),
_read7(Biobuf*, Prog*),
_read8(Biobuf*, Prog*),
_read9(Biobuf*, Prog*),
_readk(Biobuf*, Prog*),
@ -55,6 +56,7 @@ static Obj obj[] =
[Obj68020] "68020 .2", _is2, _read2,
[ObjAmd64] "amd64 .6", _is6, _read6,
[ObjArm] "arm .5", _is5, _read5,
[ObjArm64] "arm64 .7", _is7, _read7,
[Obj386] "386 .8", _is8, _read8,
[ObjSparc] "sparc .k", _isk, _readk,
[ObjPower] "power .q", _isq, _readq,

10
sys/src/libmach/setmach.c
View File

@ -17,9 +17,9 @@ struct machtab
};
extern Mach mmips, msparc, m68020, mi386, mamd64,
marm, mmips2be, mmips2le, mpower, mpower64, msparc64;
marm, marm64, mmips2be, mmips2le, mpower, mpower64, msparc64;
extern Machdata mipsmach, mipsmachle, sparcmach, m68020mach, i386mach,
armmach, mipsmach2le, powermach, sparc64mach;
armmach, arm64mach, mipsmach2le, powermach, sparc64mach;
/*
* machine selection table. machines with native disassemblers should
@ -106,6 +106,12 @@ Machtab machines[] =
AARM,
&marm,
&armmach, },
{ "arm64", /*ARM64*/
FARM64,
FARM64B,
AARM64,
&marm64,
&arm64mach, },
{ "power", /*PowerPC*/
FPOWER,
FPOWERB,