484 lines
17 KiB
C
484 lines
17 KiB
C
#ifdef __sparc__
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register void *__thread_self __asm ("g7");
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#endif
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#include <unistd.h>
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#include <fcntl.h>
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#include <syscall.h>
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#if defined __i386__
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# define INTERNAL_SYSCALL_DECL(err) do { } while (0)
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# define INTERNAL_SYSCALL(name, err, nr, args...) \
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({ \
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register unsigned int resultvar; \
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asm volatile ( \
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"movl %1, %%eax\n\t" \
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"int $0x80\n\t" \
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: "=a" (resultvar) \
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: "i" (__NR_##name) ASMFMT_##nr(args) : "memory", "cc"); \
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(int) resultvar; })
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# define INTERNAL_SYSCALL_ERROR_P(val, err) \
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((unsigned int) (val) >= 0xfffff001u)
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# define ASMFMT_0()
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# define ASMFMT_1(arg1) \
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, "b" (arg1)
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# define ASMFMT_2(arg1, arg2) \
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, "b" (arg1), "c" (arg2)
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# define ASMFMT_3(arg1, arg2, arg3) \
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, "b" (arg1), "c" (arg2), "d" (arg3)
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#elif defined __x86_64__
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# define INTERNAL_SYSCALL_DECL(err) do { } while (0)
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# define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
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({ \
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unsigned long resultvar; \
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LOAD_ARGS_##nr (args) \
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LOAD_REGS_##nr \
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asm volatile ( \
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"syscall\n\t" \
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: "=a" (resultvar) \
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: "0" (name) ASM_ARGS_##nr : "memory", "cc", "r11", "cx"); \
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(long) resultvar; })
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# define INTERNAL_SYSCALL(name, err, nr, args...) \
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INTERNAL_SYSCALL_NCS (__NR_##name, err, nr, ##args)
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# define INTERNAL_SYSCALL_ERROR_P(val, err) \
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((unsigned long) (val) >= -4095L)
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# define LOAD_ARGS_0()
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# define LOAD_REGS_0
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# define ASM_ARGS_0
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# define LOAD_ARGS_1(a1) \
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long int __arg1 = (long) (a1); \
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LOAD_ARGS_0 ()
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# define LOAD_REGS_1 \
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register long int _a1 asm ("rdi") = __arg1; \
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LOAD_REGS_0
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# define ASM_ARGS_1 ASM_ARGS_0, "r" (_a1)
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# define LOAD_ARGS_2(a1, a2) \
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long int __arg2 = (long) (a2); \
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LOAD_ARGS_1 (a1)
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# define LOAD_REGS_2 \
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register long int _a2 asm ("rsi") = __arg2; \
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LOAD_REGS_1
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# define ASM_ARGS_2 ASM_ARGS_1, "r" (_a2)
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# define LOAD_ARGS_3(a1, a2, a3) \
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long int __arg3 = (long) (a3); \
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LOAD_ARGS_2 (a1, a2)
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# define LOAD_REGS_3 \
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register long int _a3 asm ("rdx") = __arg3; \
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LOAD_REGS_2
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# define ASM_ARGS_3 ASM_ARGS_2, "r" (_a3)
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#elif defined __powerpc__
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# define INTERNAL_SYSCALL_DECL(err) long int err
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# define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
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({ \
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register long int r0 __asm__ ("r0"); \
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register long int r3 __asm__ ("r3"); \
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register long int r4 __asm__ ("r4"); \
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register long int r5 __asm__ ("r5"); \
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register long int r6 __asm__ ("r6"); \
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register long int r7 __asm__ ("r7"); \
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register long int r8 __asm__ ("r8"); \
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LOADARGS_##nr(name, args); \
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__asm__ __volatile__ \
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("sc\n\t" \
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"mfcr %0\n\t" \
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: "=&r" (r0), \
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"=&r" (r3), "=&r" (r4), "=&r" (r5), \
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"=&r" (r6), "=&r" (r7), "=&r" (r8) \
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: ASM_INPUT_##nr \
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: "r9", "r10", "r11", "r12", \
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"cr0", "ctr", "memory"); \
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err = r0; \
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(int) r3; \
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})
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# define INTERNAL_SYSCALL(name, err, nr, args...) \
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INTERNAL_SYSCALL_NCS (__NR_##name, err, nr, ##args)
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# define INTERNAL_SYSCALL_ERROR_P(val, err) \
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((void) (val), __builtin_expect ((err) & (1 << 28), 0))
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# define LOADARGS_0(name, dummy) \
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r0 = name
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# define LOADARGS_1(name, __arg1) \
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long int arg1 = (long int) (__arg1); \
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LOADARGS_0(name, 0); \
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r3 = arg1
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# define LOADARGS_2(name, __arg1, __arg2) \
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long int arg2 = (long int) (__arg2); \
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LOADARGS_1(name, __arg1); \
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r4 = arg2
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# define LOADARGS_3(name, __arg1, __arg2, __arg3) \
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long int arg3 = (long int) (__arg3); \
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LOADARGS_2(name, __arg1, __arg2); \
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r5 = arg3
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# define ASM_INPUT_0 "0" (r0)
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# define ASM_INPUT_1 ASM_INPUT_0, "1" (r3)
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# define ASM_INPUT_2 ASM_INPUT_1, "2" (r4)
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# define ASM_INPUT_3 ASM_INPUT_2, "3" (r5)
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#elif defined __ia64__
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# define DO_INLINE_SYSCALL_NCS(name, nr, args...) \
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LOAD_ARGS_##nr (args) \
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register long _r8 asm ("r8"); \
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register long _r10 asm ("r10"); \
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register long _r15 asm ("r15") = name; \
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long _retval; \
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LOAD_REGS_##nr \
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__asm __volatile ("break 0x100000;;" \
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: "=r" (_r8), "=r" (_r10), "=r" (_r15) \
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ASM_OUTARGS_##nr \
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: "2" (_r15) ASM_ARGS_##nr \
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: "memory" ASM_CLOBBERS_##nr); \
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_retval = _r8;
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# define INTERNAL_SYSCALL_DECL(err) long int err
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# define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
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({ \
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DO_INLINE_SYSCALL_NCS (name, nr, args) \
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err = _r10; \
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_retval; })
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# define INTERNAL_SYSCALL(name, err, nr, args...) \
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INTERNAL_SYSCALL_NCS (__NR_##name, err, nr, ##args)
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# define INTERNAL_SYSCALL_ERROR_P(val, err) (err == -1)
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# define LOAD_ARGS_0()
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# define LOAD_REGS_0
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# define LOAD_ARGS_1(a1) \
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long _arg1 = (long) (a1); \
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LOAD_ARGS_0 ()
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# define LOAD_REGS_1 \
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register long _out0 asm ("out0") = _arg1; \
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LOAD_REGS_0
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# define LOAD_ARGS_2(a1, a2) \
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long _arg2 = (long) (a2); \
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LOAD_ARGS_1 (a1)
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# define LOAD_REGS_2 \
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register long _out1 asm ("out1") = _arg2; \
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LOAD_REGS_1
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# define LOAD_ARGS_3(a1, a2, a3) \
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long _arg3 = (long) (a3); \
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LOAD_ARGS_2 (a1, a2)
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# define LOAD_REGS_3 \
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register long _out2 asm ("out2") = _arg3; \
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LOAD_REGS_2
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# define ASM_OUTARGS_0
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# define ASM_OUTARGS_1 ASM_OUTARGS_0, "=r" (_out0)
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# define ASM_OUTARGS_2 ASM_OUTARGS_1, "=r" (_out1)
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# define ASM_OUTARGS_3 ASM_OUTARGS_2, "=r" (_out2)
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# define ASM_ARGS_0
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# define ASM_ARGS_1 ASM_ARGS_0, "3" (_out0)
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# define ASM_ARGS_2 ASM_ARGS_1, "4" (_out1)
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# define ASM_ARGS_3 ASM_ARGS_2, "5" (_out2)
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# define ASM_CLOBBERS_0 ASM_CLOBBERS_1, "out0"
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# define ASM_CLOBBERS_1 ASM_CLOBBERS_2, "out1"
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# define ASM_CLOBBERS_2 ASM_CLOBBERS_3, "out2"
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# define ASM_CLOBBERS_3 ASM_CLOBBERS_4, "out3"
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# define ASM_CLOBBERS_4 ASM_CLOBBERS_5, "out4"
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# define ASM_CLOBBERS_5 ASM_CLOBBERS_6, "out5"
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# define ASM_CLOBBERS_6_COMMON , "out6", "out7", \
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/* Non-stacked integer registers, minus r8, r10, r15. */ \
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"r2", "r3", "r9", "r11", "r12", "r13", "r14", "r16", "r17", "r18", \
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"r19", "r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", \
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"r28", "r29", "r30", "r31", \
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/* Predicate registers. */ \
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"p6", "p7", "p8", "p9", "p10", "p11", "p12", "p13", "p14", "p15", \
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/* Non-rotating fp registers. */ \
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"f6", "f7", "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
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/* Branch registers. */ \
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"b6"
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# define ASM_CLOBBERS_6 ASM_CLOBBERS_6_COMMON , "b7"
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#elif defined __s390__
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# define INTERNAL_SYSCALL_DECL(err) do { } while (0)
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# define INTERNAL_SYSCALL_DIRECT(name, err, nr, args...) \
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({ \
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DECLARGS_##nr(args) \
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register long _ret asm("2"); \
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asm volatile ( \
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"svc %b1\n\t" \
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: "=d" (_ret) \
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: "i" (__NR_##name) ASMFMT_##nr \
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: "memory" ); \
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_ret; })
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# define INTERNAL_SYSCALL_SVC0(name, err, nr, args...) \
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({ \
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DECLARGS_##nr(args) \
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register unsigned long _nr asm("1") = (unsigned long)(__NR_##name); \
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register long _ret asm("2"); \
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asm volatile ( \
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"svc 0\n\t" \
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: "=d" (_ret) \
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: "d" (_nr) ASMFMT_##nr \
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: "memory" ); \
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_ret; })
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# define INTERNAL_SYSCALL(name, err, nr, args...) \
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(((__NR_##name) < 256) ? \
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INTERNAL_SYSCALL_DIRECT(name, err, nr, args) : \
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INTERNAL_SYSCALL_SVC0(name, err,nr, args))
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# define INTERNAL_SYSCALL_ERROR_P(val, err) \
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((unsigned long) (val) >= -4095UL)
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# define DECLARGS_0()
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# define DECLARGS_1(arg1) \
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register unsigned long gpr2 asm ("2") = (unsigned long)(arg1);
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# define DECLARGS_2(arg1, arg2) \
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DECLARGS_1(arg1) \
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register unsigned long gpr3 asm ("3") = (unsigned long)(arg2);
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# define DECLARGS_3(arg1, arg2, arg3) \
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DECLARGS_2(arg1, arg2) \
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register unsigned long gpr4 asm ("4") = (unsigned long)(arg3);
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# define ASMFMT_0
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# define ASMFMT_1 , "0" (gpr2)
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# define ASMFMT_2 , "0" (gpr2), "d" (gpr3)
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# define ASMFMT_3 , "0" (gpr2), "d" (gpr3), "d" (gpr4)
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#elif defined __sparc__
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# ifndef __arch64__
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# define __INTERNAL_SYSCALL_STRING \
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"ta 0x10;" \
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"bcs,a 1f;" \
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" sub %%g0, %%o0, %%o0;" \
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"1:"
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# define __SYSCALL_CLOBBERS "g2", "g3", "g4", "g5", "g6", \
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"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
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"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
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"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \
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"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \
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"cc", "memory"
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# else
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# define __INTERNAL_SYSCALL_STRING \
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"ta 0x6d;" \
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"bcs,a,pt %%xcc, 1f;" \
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" sub %%g0, %%o0, %%o0;" \
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"1:"
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# define __SYSCALL_CLOBBERS "g2", "g3", "g4", "g5", "g6", \
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"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
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"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
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"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \
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"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \
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"f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46", \
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"f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62", \
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"cc", "memory"
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# endif
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#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
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#define INTERNAL_SYSCALL(name, err, nr, args...) \
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inline_syscall##nr(__INTERNAL_SYSCALL_STRING, __NR_##name, args)
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#define INTERNAL_SYSCALL_ERROR_P(val, err) \
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((unsigned long) (val) >= -515L)
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# define inline_syscall0(string,name,dummy...) \
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({ \
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register long __o0 __asm__ ("o0"); \
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register long __g1 __asm__ ("g1") = name; \
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__asm __volatile (string : "=r" (__g1), "=r" (__o0) : \
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"0" (__g1) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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# define inline_syscall1(string,name,arg1) \
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({ \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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register long __g1 __asm__ ("g1") = name; \
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__asm __volatile (string : "=r" (__g1), "=r" (__o0) : \
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"0" (__g1), "1" (__o0) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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# define inline_syscall2(string,name,arg1,arg2) \
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({ \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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register long __o1 __asm__ ("o1") = (long)(arg2); \
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register long __g1 __asm__ ("g1") = name; \
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__asm __volatile (string : "=r" (__g1), "=r" (__o0) : \
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"0" (__g1), "1" (__o0), "r" (__o1) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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# define inline_syscall3(string,name,arg1,arg2,arg3) \
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({ \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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register long __o1 __asm__ ("o1") = (long)(arg2); \
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register long __o2 __asm__ ("o2") = (long)(arg3); \
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register long __g1 __asm__ ("g1") = name; \
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__asm __volatile (string : "=r" (__g1), "=r" (__o0) : \
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"0" (__g1), "1" (__o0), "r" (__o1), \
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"r" (__o2) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#elif defined __alpha__
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# define INTERNAL_SYSCALL(name, err_out, nr, args...) \
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INTERNAL_SYSCALL1(name, err_out, nr, args)
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# define INTERNAL_SYSCALL1(name, err_out, nr, args...) \
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INTERNAL_SYSCALL_NCS(__NR_##name, err_out, nr, args)
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# define INTERNAL_SYSCALL_NCS(name, err_out, nr, args...) \
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({ \
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long _sc_ret, _sc_err; \
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inline_syscall##nr(name, args); \
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err_out = _sc_err; \
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_sc_ret; \
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})
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# define INTERNAL_SYSCALL_DECL(err) long int err
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# define INTERNAL_SYSCALL_ERROR_P(val, err) err
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# define inline_syscall_clobbers \
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"$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", \
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"$22", "$23", "$24", "$25", "$27", "$28", "memory"
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# define inline_syscall_r0_asm
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# define inline_syscall_r0_out_constraint "=v"
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# define inline_syscall0(name, args...) \
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{ \
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register long _sc_0 inline_syscall_r0_asm; \
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register long _sc_19 __asm__("$19"); \
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\
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_sc_0 = name; \
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__asm__ __volatile__ \
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("callsys # %0 %1 <= %2" \
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: inline_syscall_r0_out_constraint (_sc_0), \
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"=r"(_sc_19) \
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: "0"(_sc_0) \
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: inline_syscall_clobbers, \
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"$16", "$17", "$18", "$20", "$21"); \
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_sc_ret = _sc_0, _sc_err = _sc_19; \
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}
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# define inline_syscall1(name,arg1) \
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{ \
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register long _sc_0 inline_syscall_r0_asm; \
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register long _sc_16 __asm__("$16"); \
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register long _sc_19 __asm__("$19"); \
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\
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_sc_0 = name; \
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_sc_16 = (long) (arg1); \
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__asm__ __volatile__ \
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("callsys # %0 %1 <= %2 %3" \
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: inline_syscall_r0_out_constraint (_sc_0), \
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"=r"(_sc_19), "=r"(_sc_16) \
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: "0"(_sc_0), "2"(_sc_16) \
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: inline_syscall_clobbers, \
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"$17", "$18", "$20", "$21"); \
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_sc_ret = _sc_0, _sc_err = _sc_19; \
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}
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# define inline_syscall2(name,arg1,arg2) \
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{ \
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register long _sc_0 inline_syscall_r0_asm; \
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register long _sc_16 __asm__("$16"); \
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register long _sc_17 __asm__("$17"); \
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register long _sc_19 __asm__("$19"); \
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\
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_sc_0 = name; \
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_sc_16 = (long) (arg1); \
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_sc_17 = (long) (arg2); \
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__asm__ __volatile__ \
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("callsys # %0 %1 <= %2 %3 %4" \
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: inline_syscall_r0_out_constraint (_sc_0), \
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"=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17) \
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: "0"(_sc_0), "2"(_sc_16), "3"(_sc_17) \
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: inline_syscall_clobbers, \
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"$18", "$20", "$21"); \
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_sc_ret = _sc_0, _sc_err = _sc_19; \
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}
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# define inline_syscall3(name,arg1,arg2,arg3) \
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{ \
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register long _sc_0 inline_syscall_r0_asm; \
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register long _sc_16 __asm__("$16"); \
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register long _sc_17 __asm__("$17"); \
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register long _sc_18 __asm__("$18"); \
|
|
register long _sc_19 __asm__("$19"); \
|
|
\
|
|
_sc_0 = name; \
|
|
_sc_16 = (long) (arg1); \
|
|
_sc_17 = (long) (arg2); \
|
|
_sc_18 = (long) (arg3); \
|
|
__asm__ __volatile__ \
|
|
("callsys # %0 %1 <= %2 %3 %4 %5" \
|
|
: inline_syscall_r0_out_constraint (_sc_0), \
|
|
"=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \
|
|
"=r"(_sc_18) \
|
|
: "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \
|
|
"4"(_sc_18) \
|
|
: inline_syscall_clobbers, "$20", "$21"); \
|
|
_sc_ret = _sc_0, _sc_err = _sc_19; \
|
|
}
|
|
#elif defined __arm__ && defined __ARM_EABI__
|
|
# define INTERNAL_SYSCALL_DECL(err) do { } while (0)
|
|
# define INTERNAL_SYSCALL(name, err, nr, args...) \
|
|
({ \
|
|
register int _r0 __asm__("r0"); \
|
|
register int _nr __asm__("r7"); \
|
|
LOAD_ARGS_##nr(args) \
|
|
_nr = __NR_##name; \
|
|
asm volatile ("swi\t0\t@ syscall " #name "\n\t" \
|
|
: "=r" (_r0) \
|
|
: "r" (_nr) ASM_ARGS_##nr \
|
|
: "memory"); \
|
|
_r0; })
|
|
# define INTERNAL_SYSCALL_ERROR_P(val, err) \
|
|
((unsigned int) (val) >= 0xfffff001u)
|
|
# define ASM_ARGS_0
|
|
# define ASM_ARGS_1 , "r" (_r0)
|
|
# define ASM_ARGS_2 , "r" (_r0), "r" (_r1)
|
|
# define ASM_ARGS_3 , "r" (_r0), "r" (_r1), "r" (_r2)
|
|
# define LOAD_ARGS_0()
|
|
# define LOAD_ARGS_1(r0) \
|
|
_r0 = (int)r0;
|
|
# define LOAD_ARGS_2(r0, r1) \
|
|
_r0 = (int)r0; \
|
|
register int _r1 __asm__("r1") = (int)r1;
|
|
# define LOAD_ARGS_3(r0, r1, r2) \
|
|
_r0 = (int)r0; \
|
|
register int _r1 __asm__("r1") = (int)r1; \
|
|
register int _r2 __asm__("r2") = (int)r2;
|
|
#endif
|
|
|
|
int main (int argc, char **argv)
|
|
{
|
|
const char *arg[] = { "/sbin/ldconfig", 0 };
|
|
long ret;
|
|
INTERNAL_SYSCALL_DECL (err);
|
|
ret = INTERNAL_SYSCALL (access, err, 2, arg[0], X_OK);
|
|
if (INTERNAL_SYSCALL_ERROR_P (ret, err))
|
|
INTERNAL_SYSCALL (exit, err, 1, 0);
|
|
INTERNAL_SYSCALL (execve, err, 3, arg[0], arg, &argv[argc + 1]);
|
|
INTERNAL_SYSCALL (exit, err, 1, 110);
|
|
return 110;
|
|
}
|
|
|
|
int __libc_multiple_threads __attribute__((nocommon));
|
|
int __libc_enable_asynccancel (void) { return 0; }
|
|
void __libc_disable_asynccancel (int x) { }
|
|
void __libc_csu_init (void) { }
|
|
void __libc_csu_fini (void) { }
|
|
pid_t __fork (void) { return -1; }
|
|
char thr_buf[65536];
|
|
|
|
#ifndef __powerpc__
|
|
int __libc_start_main (int (*main) (int argc, char **argv),
|
|
int argc, char **argv,
|
|
void (*init) (void), void (*fini) (void),
|
|
void (*rtld_fini) (void), void * stack_end)
|
|
#else
|
|
struct startup_info
|
|
{
|
|
void *sda_base;
|
|
int (*main) (int, char **, char **, void *);
|
|
int (*init) (int, char **, char **, void *);
|
|
void (*fini) (void);
|
|
};
|
|
|
|
int __libc_start_main (int argc, char **argv, char **ev,
|
|
void *auxvec, void (*rtld_fini) (void),
|
|
struct startup_info *stinfo,
|
|
char **stack_on_entry)
|
|
#endif
|
|
{
|
|
#if defined __ia64__ || defined __powerpc64__
|
|
register void *r13 __asm ("r13") = thr_buf + 32768;
|
|
__asm ("" : : "r" (r13));
|
|
#elif defined __sparc__
|
|
register void *g6 __asm ("g6") = thr_buf + 32768;
|
|
__thread_self = thr_buf + 32768;
|
|
__asm ("" : : "r" (g6), "r" (__thread_self));
|
|
#elif defined __s390__ && !defined __s390x__
|
|
__asm ("sar %%a0,%0" : : "d" (thr_buf + 32768));
|
|
#elif defined __s390x__
|
|
__asm ("sar %%a1,%0; srlg 0,%0,32; sar %%a0,0" : : "d" (thr_buf + 32768) : "0");
|
|
#elif defined __powerpc__ && !defined __powerpc64__
|
|
register void *r2 __asm ("r2") = thr_buf + 32768;
|
|
__asm ("" : : "r" (r2));
|
|
#endif
|
|
#ifdef __powerpc__
|
|
argc = (long)*stack_on_entry;
|
|
argv = stack_on_entry + 1;
|
|
#endif
|
|
main (argc, argv);
|
|
return 110;
|
|
}
|