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26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
29 #include <sys/param.h>
30 #include <sys/ptrace.h>
32 #include <machine/armreg.h>
36 #include <sysdecode.h>
41 aarch64_cloudabi32_fetch_args(struct trussinfo *trussinfo, unsigned int narg)
43 struct current_syscall *cs;
44 struct ptrace_io_desc iorequest;
49 /* Fetch registers, containing the address of the arguments. */
50 tid = trussinfo->curthread->tid;
51 if (ptrace(PT_GETREGS, tid, (caddr_t)®s, 0) == -1) {
52 fprintf(trussinfo->outfile,
53 "-- CANNOT READ REGISTERS --\n");
57 /* Fetch arguments. They are already padded to 64 bits. */
58 cs = &trussinfo->curthread->cs;
59 iorequest.piod_op = PIOD_READ_D;
60 iorequest.piod_offs = (void *)regs.x[2];
61 iorequest.piod_addr = cs->args;
62 iorequest.piod_len = sizeof(cs->args[0]) * narg;
63 if (ptrace(PT_IO, tid, (caddr_t)&iorequest, 0) == -1 ||
64 iorequest.piod_len == 0)
71 aarch64_cloudabi32_fetch_retval(struct trussinfo *trussinfo, long *retval,
74 struct ptrace_io_desc iorequest;
78 /* Fetch registers, containing the address of the return values. */
79 tid = trussinfo->curthread->tid;
80 if (ptrace(PT_GETREGS, tid, (caddr_t)®s, 0) == -1) {
81 fprintf(trussinfo->outfile, "-- CANNOT READ REGISTERS --\n");
85 if ((regs.spsr & PSR_C) == 0) {
86 /* System call succeeded. Fetch return values. */
87 iorequest.piod_op = PIOD_READ_D;
88 iorequest.piod_offs = (void *)regs.x[2];
89 iorequest.piod_addr = retval;
90 iorequest.piod_len = sizeof(retval[0]) * 2;
91 if (ptrace(PT_IO, tid, (caddr_t)&iorequest, 0) == -1 ||
92 iorequest.piod_len == 0)
96 /* System call failed. Set error. */
97 retval[0] = regs.x[0];
103 static struct procabi aarch64_cloudabi32 = {
105 SYSDECODE_ABI_CLOUDABI32,
106 aarch64_cloudabi32_fetch_args,
107 aarch64_cloudabi32_fetch_retval,
108 STAILQ_HEAD_INITIALIZER(aarch64_cloudabi32.extra_syscalls),
112 PROCABI(aarch64_cloudabi32);