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authorRui Paulo <rpaulo@FreeBSD.org>2010-07-17 18:29:36 +0000
committerRui Paulo <rpaulo@FreeBSD.org>2010-07-17 18:29:36 +0000
commit622d1d89ae286ec7879e2dba74c26f7958b3fa52 (patch)
treec379f0a72f6fe1f1db806244af021c756cebc83e
parenta5063650ed2e7b72532d19f3b2557d59042f3c5e (diff)
downloadsrc-622d1d89ae286ec7879e2dba74c26f7958b3fa52.tar.gz
src-622d1d89ae286ec7879e2dba74c26f7958b3fa52.zip
libdtrace MD dependent files. These interact with the fasttrap provider
and so they are needed for constructing pid and usdt probes.
Notes
Notes: svn path=/vendor/opensolaris/dist/; revision=210198
-rw-r--r--lib/libdtrace/i386/dt_isadep.c488
-rw-r--r--lib/libdtrace/i386/regs.d.in117
-rw-r--r--lib/libdtrace/i386/regs.sed.in82
-rw-r--r--lib/libdtrace/sparc/dt_isadep.c338
-rw-r--r--lib/libdtrace/sparc/regs.d120
5 files changed, 1145 insertions, 0 deletions
diff --git a/lib/libdtrace/i386/dt_isadep.c b/lib/libdtrace/i386/dt_isadep.c
new file mode 100644
index 000000000000..c1484a40742f
--- /dev/null
+++ b/lib/libdtrace/i386/dt_isadep.c
@@ -0,0 +1,488 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#include <stdlib.h>
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+#include <libgen.h>
+
+#include <dt_impl.h>
+#include <dt_pid.h>
+
+#include <dis_tables.h>
+
+#define DT_POPL_EBP 0x5d
+#define DT_RET 0xc3
+#define DT_RET16 0xc2
+#define DT_LEAVE 0xc9
+#define DT_JMP32 0xe9
+#define DT_JMP8 0xeb
+#define DT_REP 0xf3
+
+#define DT_MOVL_EBP_ESP 0xe58b
+
+#define DT_ISJ32(op16) (((op16) & 0xfff0) == 0x0f80)
+#define DT_ISJ8(op8) (((op8) & 0xf0) == 0x70)
+
+#define DT_MODRM_REG(modrm) (((modrm) >> 3) & 0x7)
+
+static int dt_instr_size(uchar_t *, dtrace_hdl_t *, pid_t, uintptr_t, char);
+
+/*ARGSUSED*/
+int
+dt_pid_create_entry_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
+ fasttrap_probe_spec_t *ftp, const GElf_Sym *symp)
+{
+ ftp->ftps_type = DTFTP_ENTRY;
+ ftp->ftps_pc = (uintptr_t)symp->st_value;
+ ftp->ftps_size = (size_t)symp->st_size;
+ ftp->ftps_noffs = 1;
+ ftp->ftps_offs[0] = 0;
+
+ if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
+ dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
+ strerror(errno));
+ return (dt_set_errno(dtp, errno));
+ }
+
+ return (1);
+}
+
+static int
+dt_pid_has_jump_table(struct ps_prochandle *P, dtrace_hdl_t *dtp,
+ uint8_t *text, fasttrap_probe_spec_t *ftp, const GElf_Sym *symp)
+{
+ ulong_t i;
+ int size;
+ pid_t pid = Pstatus(P)->pr_pid;
+ char dmodel = Pstatus(P)->pr_dmodel;
+
+ /*
+ * Take a pass through the function looking for a register-dependant
+ * jmp instruction. This could be a jump table so we have to be
+ * ultra conservative.
+ */
+ for (i = 0; i < ftp->ftps_size; i += size) {
+ size = dt_instr_size(&text[i], dtp, pid, symp->st_value + i,
+ dmodel);
+
+ /*
+ * Assume the worst if we hit an illegal instruction.
+ */
+ if (size <= 0) {
+ dt_dprintf("error at %#lx (assuming jump table)\n", i);
+ return (1);
+ }
+
+ /*
+ * Register-dependant jmp instructions start with a 0xff byte
+ * and have the modrm.reg field set to 4. They can have an
+ * optional REX prefix on the 64-bit ISA.
+ */
+ if ((text[i] == 0xff && DT_MODRM_REG(text[i + 1]) == 4) ||
+ (dmodel == PR_MODEL_LP64 && (text[i] & 0xf0) == 0x40 &&
+ text[i + 1] == 0xff && DT_MODRM_REG(text[i + 2]) == 4)) {
+ dt_dprintf("found a suspected jump table at %s:%lx\n",
+ ftp->ftps_func, i);
+ return (1);
+ }
+ }
+
+ return (0);
+}
+
+/*ARGSUSED*/
+int
+dt_pid_create_return_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
+ fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, uint64_t *stret)
+{
+ uint8_t *text;
+ ulong_t i, end;
+ int size;
+ pid_t pid = Pstatus(P)->pr_pid;
+ char dmodel = Pstatus(P)->pr_dmodel;
+
+ /*
+ * We allocate a few extra bytes at the end so we don't have to check
+ * for overrunning the buffer.
+ */
+ if ((text = calloc(1, symp->st_size + 4)) == NULL) {
+ dt_dprintf("mr sparkle: malloc() failed\n");
+ return (DT_PROC_ERR);
+ }
+
+ if (Pread(P, text, symp->st_size, symp->st_value) != symp->st_size) {
+ dt_dprintf("mr sparkle: Pread() failed\n");
+ free(text);
+ return (DT_PROC_ERR);
+ }
+
+ ftp->ftps_type = DTFTP_RETURN;
+ ftp->ftps_pc = (uintptr_t)symp->st_value;
+ ftp->ftps_size = (size_t)symp->st_size;
+ ftp->ftps_noffs = 0;
+
+ /*
+ * If there's a jump table in the function we're only willing to
+ * instrument these specific (and equivalent) instruction sequences:
+ * leave
+ * [rep] ret
+ * and
+ * movl %ebp,%esp
+ * popl %ebp
+ * [rep] ret
+ *
+ * We do this to avoid accidentally interpreting jump table
+ * offsets as actual instructions.
+ */
+ if (dt_pid_has_jump_table(P, dtp, text, ftp, symp)) {
+ for (i = 0, end = ftp->ftps_size; i < end; i += size) {
+ size = dt_instr_size(&text[i], dtp, pid,
+ symp->st_value + i, dmodel);
+
+ /* bail if we hit an invalid opcode */
+ if (size <= 0)
+ break;
+
+ if (text[i] == DT_LEAVE && text[i + 1] == DT_RET) {
+ dt_dprintf("leave/ret at %lx\n", i + 1);
+ ftp->ftps_offs[ftp->ftps_noffs++] = i + 1;
+ size = 2;
+ } else if (text[i] == DT_LEAVE &&
+ text[i + 1] == DT_REP && text[i + 2] == DT_RET) {
+ dt_dprintf("leave/rep ret at %lx\n", i + 1);
+ ftp->ftps_offs[ftp->ftps_noffs++] = i + 1;
+ size = 3;
+ } else if (*(uint16_t *)&text[i] == DT_MOVL_EBP_ESP &&
+ text[i + 2] == DT_POPL_EBP &&
+ text[i + 3] == DT_RET) {
+ dt_dprintf("movl/popl/ret at %lx\n", i + 3);
+ ftp->ftps_offs[ftp->ftps_noffs++] = i + 3;
+ size = 4;
+ } else if (*(uint16_t *)&text[i] == DT_MOVL_EBP_ESP &&
+ text[i + 2] == DT_POPL_EBP &&
+ text[i + 3] == DT_REP &&
+ text[i + 4] == DT_RET) {
+ dt_dprintf("movl/popl/rep ret at %lx\n", i + 3);
+ ftp->ftps_offs[ftp->ftps_noffs++] = i + 3;
+ size = 5;
+ }
+ }
+ } else {
+ for (i = 0, end = ftp->ftps_size; i < end; i += size) {
+ size = dt_instr_size(&text[i], dtp, pid,
+ symp->st_value + i, dmodel);
+
+ /* bail if we hit an invalid opcode */
+ if (size <= 0)
+ break;
+
+ /* ordinary ret */
+ if (size == 1 && text[i] == DT_RET)
+ goto is_ret;
+
+ /* two-byte ret */
+ if (size == 2 && text[i] == DT_REP &&
+ text[i + 1] == DT_RET)
+ goto is_ret;
+
+ /* ret <imm16> */
+ if (size == 3 && text[i] == DT_RET16)
+ goto is_ret;
+
+ /* two-byte ret <imm16> */
+ if (size == 4 && text[i] == DT_REP &&
+ text[i + 1] == DT_RET16)
+ goto is_ret;
+
+ /* 32-bit displacement jmp outside of the function */
+ if (size == 5 && text[i] == DT_JMP32 && symp->st_size <=
+ (uintptr_t)(i + size + *(int32_t *)&text[i + 1]))
+ goto is_ret;
+
+ /* 8-bit displacement jmp outside of the function */
+ if (size == 2 && text[i] == DT_JMP8 && symp->st_size <=
+ (uintptr_t)(i + size + *(int8_t *)&text[i + 1]))
+ goto is_ret;
+
+ /* 32-bit disp. conditional jmp outside of the func. */
+ if (size == 6 && DT_ISJ32(*(uint16_t *)&text[i]) &&
+ symp->st_size <=
+ (uintptr_t)(i + size + *(int32_t *)&text[i + 2]))
+ goto is_ret;
+
+ /* 8-bit disp. conditional jmp outside of the func. */
+ if (size == 2 && DT_ISJ8(text[i]) && symp->st_size <=
+ (uintptr_t)(i + size + *(int8_t *)&text[i + 1]))
+ goto is_ret;
+
+ continue;
+is_ret:
+ dt_dprintf("return at offset %lx\n", i);
+ ftp->ftps_offs[ftp->ftps_noffs++] = i;
+ }
+ }
+
+ free(text);
+ if (ftp->ftps_noffs > 0) {
+ if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
+ dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
+ strerror(errno));
+ return (dt_set_errno(dtp, errno));
+ }
+ }
+
+ return (ftp->ftps_noffs);
+}
+
+/*ARGSUSED*/
+int
+dt_pid_create_offset_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
+ fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, ulong_t off)
+{
+ ftp->ftps_type = DTFTP_OFFSETS;
+ ftp->ftps_pc = (uintptr_t)symp->st_value;
+ ftp->ftps_size = (size_t)symp->st_size;
+ ftp->ftps_noffs = 1;
+
+ if (strcmp("-", ftp->ftps_func) == 0) {
+ ftp->ftps_offs[0] = off;
+ } else {
+ uint8_t *text;
+ ulong_t i;
+ int size;
+ pid_t pid = Pstatus(P)->pr_pid;
+ char dmodel = Pstatus(P)->pr_dmodel;
+
+ if ((text = malloc(symp->st_size)) == NULL) {
+ dt_dprintf("mr sparkle: malloc() failed\n");
+ return (DT_PROC_ERR);
+ }
+
+ if (Pread(P, text, symp->st_size, symp->st_value) !=
+ symp->st_size) {
+ dt_dprintf("mr sparkle: Pread() failed\n");
+ free(text);
+ return (DT_PROC_ERR);
+ }
+
+ /*
+ * We can't instrument offsets in functions with jump tables
+ * as we might interpret a jump table offset as an
+ * instruction.
+ */
+ if (dt_pid_has_jump_table(P, dtp, text, ftp, symp)) {
+ free(text);
+ return (0);
+ }
+
+ for (i = 0; i < symp->st_size; i += size) {
+ if (i == off) {
+ ftp->ftps_offs[0] = i;
+ break;
+ }
+
+ /*
+ * If we've passed the desired offset without a
+ * match, then the given offset must not lie on a
+ * instruction boundary.
+ */
+ if (i > off) {
+ free(text);
+ return (DT_PROC_ALIGN);
+ }
+
+ size = dt_instr_size(&text[i], dtp, pid,
+ symp->st_value + i, dmodel);
+
+ /*
+ * If we hit an invalid instruction, bail as if we
+ * couldn't find the offset.
+ */
+ if (size <= 0) {
+ free(text);
+ return (DT_PROC_ALIGN);
+ }
+ }
+
+ free(text);
+ }
+
+ if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
+ dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
+ strerror(errno));
+ return (dt_set_errno(dtp, errno));
+ }
+
+ return (ftp->ftps_noffs);
+}
+
+/*ARGSUSED*/
+int
+dt_pid_create_glob_offset_probes(struct ps_prochandle *P, dtrace_hdl_t *dtp,
+ fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, const char *pattern)
+{
+ uint8_t *text;
+ int size;
+ ulong_t i, end = symp->st_size;
+ pid_t pid = Pstatus(P)->pr_pid;
+ char dmodel = Pstatus(P)->pr_dmodel;
+
+ ftp->ftps_type = DTFTP_OFFSETS;
+ ftp->ftps_pc = (uintptr_t)symp->st_value;
+ ftp->ftps_size = (size_t)symp->st_size;
+ ftp->ftps_noffs = 0;
+
+ if ((text = malloc(symp->st_size)) == NULL) {
+ dt_dprintf("mr sparkle: malloc() failed\n");
+ return (DT_PROC_ERR);
+ }
+
+ if (Pread(P, text, symp->st_size, symp->st_value) != symp->st_size) {
+ dt_dprintf("mr sparkle: Pread() failed\n");
+ free(text);
+ return (DT_PROC_ERR);
+ }
+
+ /*
+ * We can't instrument offsets in functions with jump tables as
+ * we might interpret a jump table offset as an instruction.
+ */
+ if (dt_pid_has_jump_table(P, dtp, text, ftp, symp)) {
+ free(text);
+ return (0);
+ }
+
+ if (strcmp("*", pattern) == 0) {
+ for (i = 0; i < end; i += size) {
+ ftp->ftps_offs[ftp->ftps_noffs++] = i;
+
+ size = dt_instr_size(&text[i], dtp, pid,
+ symp->st_value + i, dmodel);
+
+ /* bail if we hit an invalid opcode */
+ if (size <= 0)
+ break;
+ }
+ } else {
+ char name[sizeof (i) * 2 + 1];
+
+ for (i = 0; i < end; i += size) {
+ (void) snprintf(name, sizeof (name), "%x", i);
+ if (gmatch(name, pattern))
+ ftp->ftps_offs[ftp->ftps_noffs++] = i;
+
+ size = dt_instr_size(&text[i], dtp, pid,
+ symp->st_value + i, dmodel);
+
+ /* bail if we hit an invalid opcode */
+ if (size <= 0)
+ break;
+ }
+ }
+
+ free(text);
+ if (ftp->ftps_noffs > 0) {
+ if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
+ dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
+ strerror(errno));
+ return (dt_set_errno(dtp, errno));
+ }
+ }
+
+ return (ftp->ftps_noffs);
+}
+
+typedef struct dtrace_dis {
+ uchar_t *instr;
+ dtrace_hdl_t *dtp;
+ pid_t pid;
+ uintptr_t addr;
+} dtrace_dis_t;
+
+static int
+dt_getbyte(void *data)
+{
+ dtrace_dis_t *dis = data;
+ int ret = *dis->instr;
+
+ if (ret == FASTTRAP_INSTR) {
+ fasttrap_instr_query_t instr;
+
+ instr.ftiq_pid = dis->pid;
+ instr.ftiq_pc = dis->addr;
+
+ /*
+ * If we hit a byte that looks like the fasttrap provider's
+ * trap instruction (which doubles as the breakpoint
+ * instruction for debuggers) we need to query the kernel
+ * for the real value. This may just be part of an immediate
+ * value so there's no need to return an error if the
+ * kernel doesn't know about this address.
+ */
+ if (ioctl(dis->dtp->dt_ftfd, FASTTRAPIOC_GETINSTR, &instr) == 0)
+ ret = instr.ftiq_instr;
+ }
+
+ dis->addr++;
+ dis->instr++;
+
+ return (ret);
+}
+
+static int
+dt_instr_size(uchar_t *instr, dtrace_hdl_t *dtp, pid_t pid, uintptr_t addr,
+ char dmodel)
+{
+ dtrace_dis_t data;
+ dis86_t x86dis;
+ uint_t cpu_mode;
+
+ data.instr = instr;
+ data.dtp = dtp;
+ data.pid = pid;
+ data.addr = addr;
+
+ x86dis.d86_data = &data;
+ x86dis.d86_get_byte = dt_getbyte;
+ x86dis.d86_check_func = NULL;
+
+ cpu_mode = (dmodel == PR_MODEL_ILP32) ? SIZE32 : SIZE64;
+
+ if (dtrace_disx86(&x86dis, cpu_mode) != 0)
+ return (-1);
+
+ /*
+ * If the instruction was a single-byte breakpoint, there may be
+ * another debugger attached to this process. The original instruction
+ * can't be recovered so this must fail.
+ */
+ if (x86dis.d86_len == 1 && instr[0] == FASTTRAP_INSTR)
+ return (-1);
+
+ return (x86dis.d86_len);
+}
diff --git a/lib/libdtrace/i386/regs.d.in b/lib/libdtrace/i386/regs.d.in
new file mode 100644
index 000000000000..3328f33515b0
--- /dev/null
+++ b/lib/libdtrace/i386/regs.d.in
@@ -0,0 +1,117 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License"). You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+inline int R_GS = @GS@;
+#pragma D binding "1.0" R_GS
+inline int R_FS = @FS@;
+#pragma D binding "1.0" R_FS
+inline int R_ES = @ES@;
+#pragma D binding "1.0" R_ES
+inline int R_DS = @DS@;
+#pragma D binding "1.0" R_DS
+
+inline int R_EDI = @EDI@;
+#pragma D binding "1.0" R_EDI
+inline int R_ESI = @ESI@;
+#pragma D binding "1.0" R_ESI
+inline int R_EBP = @EBP@;
+#pragma D binding "1.0" R_EBP
+inline int R_ESP = @ESP@;
+#pragma D binding "1.0" R_ESP
+inline int R_EBX = @EBX@;
+#pragma D binding "1.0" R_EBX
+inline int R_EDX = @EDX@;
+#pragma D binding "1.0" R_EDX
+inline int R_ECX = @ECX@;
+#pragma D binding "1.0" R_ECX
+inline int R_EAX = @EAX@;
+#pragma D binding "1.0" R_EAX
+
+inline int R_TRAPNO = @TRAPNO@;
+#pragma D binding "1.0" R_TRAPNO
+inline int R_ERR = @ERR@;
+#pragma D binding "1.0" R_ERR
+inline int R_EIP = @EIP@;
+#pragma D binding "1.0" R_EIP
+inline int R_CS = @CS@;
+#pragma D binding "1.0" R_CS
+inline int R_EFL = @EFL@;
+#pragma D binding "1.0" R_EFL
+inline int R_UESP = @UESP@;
+#pragma D binding "1.0" R_UESP
+inline int R_SS = @SS@;
+#pragma D binding "1.0" R_SS
+
+inline int R_PC = R_EIP;
+#pragma D binding "1.0" R_PC
+inline int R_SP = R_UESP;
+#pragma D binding "1.0" R_SP
+inline int R_PS = R_EFL;
+#pragma D binding "1.0" R_PS
+inline int R_R0 = R_EAX;
+#pragma D binding "1.0" R_R0
+inline int R_R1 = R_EBX;
+#pragma D binding "1.0" R_R1
+
+inline int R_RSP = @REG_RSP@;
+#pragma D binding "1.0" R_RSP
+inline int R_RFL = @REG_RFL@;
+#pragma D binding "1.0" R_RFL
+inline int R_RIP = @REG_RIP@;
+#pragma D binding "1.0" R_RIP
+inline int R_RAX = @REG_RAX@;
+#pragma D binding "1.0" R_RAX
+inline int R_RCX = @REG_RCX@;
+#pragma D binding "1.0" R_RCX
+inline int R_RDX = @REG_RDX@;
+#pragma D binding "1.0" R_RDX
+inline int R_RBX = @REG_RBX@;
+#pragma D binding "1.0" R_RBX
+inline int R_RBP = @REG_RBP@;
+#pragma D binding "1.0" R_RBP
+inline int R_RSI = @REG_RSI@;
+#pragma D binding "1.0" R_RSI
+inline int R_RDI = @REG_RDI@;
+#pragma D binding "1.0" R_RDI
+inline int R_R8 = @REG_R8@;
+#pragma D binding "1.0" R_R8
+inline int R_R9 = @REG_R9@;
+#pragma D binding "1.0" R_R9
+inline int R_R10 = @REG_R10@;
+#pragma D binding "1.0" R_R10
+inline int R_R11 = @REG_R11@;
+#pragma D binding "1.0" R_R11
+inline int R_R12 = @REG_R12@;
+#pragma D binding "1.0" R_R12
+inline int R_R13 = @REG_R13@;
+#pragma D binding "1.0" R_R13
+inline int R_R14 = @REG_R14@;
+#pragma D binding "1.0" R_R14
+inline int R_R15 = @REG_R15@;
+#pragma D binding "1.0" R_R15
+
diff --git a/lib/libdtrace/i386/regs.sed.in b/lib/libdtrace/i386/regs.sed.in
new file mode 100644
index 000000000000..2b2080fc9d03
--- /dev/null
+++ b/lib/libdtrace/i386/regs.sed.in
@@ -0,0 +1,82 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License"). You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+/*
+ * This file is a sed script which is first preprocessed by cpp or cc -E to
+ * define a set of sed directives which replace #define tokens with their
+ * values. After preprocessing, whitespace is eliminated, and any @ symbols
+ * are translated into single space. The resulting sed script is then run
+ * over regs.d.in to replace the #define tokens listed below to create the
+ * finished regs.d. Refer to the rules in libdtrace/i386/Makefile for more
+ * information.
+ */
+
+#include <sys/regset.h>
+
+#define SED_REPLACE(x) s/#x/x/g
+#define SED_REPLACE64(x) s/#x/SS @+@1@+@ x/g
+
+SED_REPLACE(GS)
+SED_REPLACE(FS)
+SED_REPLACE(ES)
+SED_REPLACE(DS)
+SED_REPLACE(EDI)
+SED_REPLACE(ESI)
+SED_REPLACE(EBP)
+SED_REPLACE(ESP)
+SED_REPLACE(EBX)
+SED_REPLACE(EDX)
+SED_REPLACE(ECX)
+SED_REPLACE(EAX)
+SED_REPLACE(TRAPNO)
+SED_REPLACE(ERR)
+SED_REPLACE(EIP)
+SED_REPLACE(CS)
+SED_REPLACE(EFL)
+SED_REPLACE(UESP)
+SED_REPLACE(SS)
+
+SED_REPLACE64(REG_RSP)
+SED_REPLACE64(REG_RFL)
+SED_REPLACE64(REG_RIP)
+SED_REPLACE64(REG_RAX)
+SED_REPLACE64(REG_RCX)
+SED_REPLACE64(REG_RDX)
+SED_REPLACE64(REG_RBX)
+SED_REPLACE64(REG_RBP)
+SED_REPLACE64(REG_RSI)
+SED_REPLACE64(REG_RDI)
+SED_REPLACE64(REG_R8)
+SED_REPLACE64(REG_R9)
+SED_REPLACE64(REG_R10)
+SED_REPLACE64(REG_R11)
+SED_REPLACE64(REG_R12)
+SED_REPLACE64(REG_R13)
+SED_REPLACE64(REG_R14)
+SED_REPLACE64(REG_R15)
+
diff --git a/lib/libdtrace/sparc/dt_isadep.c b/lib/libdtrace/sparc/dt_isadep.c
new file mode 100644
index 000000000000..ed05275e7f83
--- /dev/null
+++ b/lib/libdtrace/sparc/dt_isadep.c
@@ -0,0 +1,338 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License"). You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+#include <stdlib.h>
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+#include <libgen.h>
+
+#include <dt_impl.h>
+#include <dt_pid.h>
+
+#define OP(x) ((x) >> 30)
+#define OP2(x) (((x) >> 22) & 0x07)
+#define COND(x) (((x) >> 25) & 0x0f)
+#define A(x) (((x) >> 29) & 0x01)
+
+#define OP_BRANCH 0
+
+#define OP2_BPcc 0x1
+#define OP2_Bicc 0x2
+#define OP2_BPr 0x3
+#define OP2_FBPfcc 0x5
+#define OP2_FBfcc 0x6
+
+/*ARGSUSED*/
+int
+dt_pid_create_entry_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
+ fasttrap_probe_spec_t *ftp, const GElf_Sym *symp)
+{
+ ftp->ftps_type = DTFTP_ENTRY;
+ ftp->ftps_pc = (uintptr_t)symp->st_value;
+ ftp->ftps_size = (size_t)symp->st_size;
+ ftp->ftps_noffs = 1;
+ ftp->ftps_offs[0] = 0;
+
+ if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
+ dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
+ strerror(errno));
+ return (dt_set_errno(dtp, errno));
+ }
+
+ return (1);
+}
+
+int
+dt_pid_create_return_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
+ fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, uint64_t *stret)
+{
+
+ uint32_t *text;
+ int i;
+ int srdepth = 0;
+
+ if ((text = malloc(symp->st_size + 4)) == NULL) {
+ dt_dprintf("mr sparkle: malloc() failed\n");
+ return (DT_PROC_ERR);
+ }
+
+ if (Pread(P, text, symp->st_size, symp->st_value) != symp->st_size) {
+ dt_dprintf("mr sparkle: Pread() failed\n");
+ free(text);
+ return (DT_PROC_ERR);
+ }
+
+ /*
+ * Leave a dummy instruction in the last slot to simplify edge
+ * conditions.
+ */
+ text[symp->st_size / 4] = 0;
+
+ ftp->ftps_type = DTFTP_RETURN;
+ ftp->ftps_pc = symp->st_value;
+ ftp->ftps_size = symp->st_size;
+ ftp->ftps_noffs = 0;
+
+ for (i = 0; i < symp->st_size / 4; i++) {
+ /*
+ * If we encounter an existing tracepoint, query the
+ * kernel to find out the instruction that was
+ * replaced at this spot.
+ */
+ while (text[i] == FASTTRAP_INSTR) {
+ fasttrap_instr_query_t instr;
+
+ instr.ftiq_pid = Pstatus(P)->pr_pid;
+ instr.ftiq_pc = symp->st_value + i * 4;
+
+ if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_GETINSTR,
+ &instr) != 0) {
+
+ if (errno == ESRCH || errno == ENOENT) {
+ if (Pread(P, &text[i], 4,
+ instr.ftiq_pc) != 4) {
+ dt_dprintf("mr sparkle: "
+ "Pread() failed\n");
+ free(text);
+ return (DT_PROC_ERR);
+ }
+ continue;
+ }
+
+ free(text);
+ dt_dprintf("mr sparkle: getinstr query "
+ "failed: %s\n", strerror(errno));
+ return (DT_PROC_ERR);
+ }
+
+ text[i] = instr.ftiq_instr;
+ break;
+ }
+
+ /* save */
+ if ((text[i] & 0xc1f80000) == 0x81e00000) {
+ srdepth++;
+ continue;
+ }
+
+ /* restore */
+ if ((text[i] & 0xc1f80000) == 0x81e80000) {
+ srdepth--;
+ continue;
+ }
+
+ if (srdepth > 0) {
+ /* ret */
+ if (text[i] == 0x81c7e008)
+ goto is_ret;
+
+ /* return */
+ if (text[i] == 0x81cfe008)
+ goto is_ret;
+
+ /* call or jmpl w/ restore in the slot */
+ if (((text[i] & 0xc0000000) == 0x40000000 ||
+ (text[i] & 0xc1f80000) == 0x81c00000) &&
+ (text[i + 1] & 0xc1f80000) == 0x81e80000)
+ goto is_ret;
+
+ /* call to one of the stret routines */
+ if ((text[i] & 0xc0000000) == 0x40000000) {
+ int32_t disp = text[i] << 2;
+ uint64_t dest = ftp->ftps_pc + i * 4 + disp;
+
+ dt_dprintf("dest = %llx\n", (u_longlong_t)dest);
+
+ if (dest == stret[0] || dest == stret[1] ||
+ dest == stret[2] || dest == stret[3])
+ goto is_ret;
+ }
+ } else {
+ /* external call */
+ if ((text[i] & 0xc0000000) == 0x40000000) {
+ int32_t dst = text[i] << 2;
+
+ dst += i * 4;
+
+ if ((uintptr_t)dst >= (uintptr_t)symp->st_size)
+ goto is_ret;
+ }
+
+ /* jmpl into %g0 -- this includes the retl pseudo op */
+ if ((text[i] & 0xfff80000) == 0x81c00000)
+ goto is_ret;
+
+ /* external branch -- possible return site */
+ if (OP(text[i]) == OP_BRANCH) {
+ int32_t dst;
+ int baa;
+
+ switch (OP2(text[i])) {
+ case OP2_BPcc:
+ dst = text[i] & 0x7ffff;
+ dst <<= 13;
+ dst >>= 11;
+
+ baa = COND(text[i]) == 8 && A(text[i]);
+ break;
+ case OP2_Bicc:
+ dst = text[i] & 0x3fffff;
+ dst <<= 10;
+ dst >>= 8;
+
+ baa = COND(text[i]) == 8 && A(text[i]);
+ break;
+ case OP2_BPr:
+ dst = (((text[i]) >> 6) & 0xc000) |
+ ((text[i]) & 0x3fff);
+ dst <<= 16;
+ dst >>= 14;
+
+ baa = 0;
+ break;
+ case OP2_FBPfcc:
+ dst = text[i] & 0x7ffff;
+ dst <<= 13;
+ dst >>= 11;
+
+ baa = COND(text[i]) == 8 && A(text[i]);
+ break;
+ case OP2_FBfcc:
+ dst = text[i] & 0x3fffff;
+ dst <<= 10;
+ dst >>= 8;
+
+ baa = COND(text[i]) == 8 && A(text[i]);
+ break;
+ default:
+ continue;
+ }
+
+ dst += i * 4;
+
+ /*
+ * Interpret branches outside of the function's
+ * bounds as potential return sites. If the
+ * branch is a ba,a don't skip the instruction
+ * in the delay slot.
+ */
+ if ((uintptr_t)dst >=
+ (uintptr_t)symp->st_size) {
+ if (baa)
+ goto is_ret_baa;
+ else
+ goto is_ret;
+ }
+ }
+ }
+
+ continue;
+is_ret:
+ i++;
+is_ret_baa:
+ dt_dprintf("return at offset %x\n", i * 4);
+ ftp->ftps_offs[ftp->ftps_noffs++] = i * 4;
+ }
+
+ free(text);
+ if (ftp->ftps_noffs > 0) {
+ if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
+ dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
+ strerror(errno));
+ return (dt_set_errno(dtp, errno));
+ }
+ }
+
+
+ return (ftp->ftps_noffs);
+}
+
+/*ARGSUSED*/
+int
+dt_pid_create_offset_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
+ fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, ulong_t off)
+{
+ if (off & 0x3)
+ return (DT_PROC_ALIGN);
+
+ ftp->ftps_type = DTFTP_OFFSETS;
+ ftp->ftps_pc = (uintptr_t)symp->st_value;
+ ftp->ftps_size = (size_t)symp->st_size;
+ ftp->ftps_noffs = 1;
+ ftp->ftps_offs[0] = off;
+
+ if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
+ dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
+ strerror(errno));
+ return (dt_set_errno(dtp, errno));
+ }
+
+ return (1);
+}
+
+/*ARGSUSED*/
+int
+dt_pid_create_glob_offset_probes(struct ps_prochandle *P, dtrace_hdl_t *dtp,
+ fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, const char *pattern)
+{
+ ulong_t i;
+
+ ftp->ftps_type = DTFTP_OFFSETS;
+ ftp->ftps_pc = (uintptr_t)symp->st_value;
+ ftp->ftps_size = (size_t)symp->st_size;
+ ftp->ftps_noffs = 0;
+
+ /*
+ * If we're matching against everything, just iterate through each
+ * instruction in the function, otherwise look for matching offset
+ * names by constructing the string and comparing it against the
+ * pattern.
+ */
+ if (strcmp("*", pattern) == 0) {
+ for (i = 0; i < symp->st_size; i += 4) {
+ ftp->ftps_offs[ftp->ftps_noffs++] = i;
+ }
+ } else {
+ char name[sizeof (i) * 2 + 1];
+
+ for (i = 0; i < symp->st_size; i += 4) {
+ (void) sprintf(name, "%lx", i);
+ if (gmatch(name, pattern))
+ ftp->ftps_offs[ftp->ftps_noffs++] = i;
+ }
+ }
+
+ if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
+ dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
+ strerror(errno));
+ return (dt_set_errno(dtp, errno));
+ }
+
+ return (ftp->ftps_noffs);
+}
diff --git a/lib/libdtrace/sparc/regs.d b/lib/libdtrace/sparc/regs.d
new file mode 100644
index 000000000000..7c4bc0fac519
--- /dev/null
+++ b/lib/libdtrace/sparc/regs.d
@@ -0,0 +1,120 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License"). You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+inline int R_G0 = 0;
+#pragma D binding "1.0" R_G0
+inline int R_G1 = 1;
+#pragma D binding "1.0" R_G1
+inline int R_G2 = 2;
+#pragma D binding "1.0" R_G2
+inline int R_G3 = 3;
+#pragma D binding "1.0" R_G3
+inline int R_G4 = 4;
+#pragma D binding "1.0" R_G4
+inline int R_G5 = 5;
+#pragma D binding "1.0" R_G5
+inline int R_G6 = 6;
+#pragma D binding "1.0" R_G6
+inline int R_G7 = 7;
+#pragma D binding "1.0" R_G7
+
+inline int R_O0 = 8;
+#pragma D binding "1.0" R_O0
+inline int R_O1 = 9;
+#pragma D binding "1.0" R_O1
+inline int R_O2 = 10;
+#pragma D binding "1.0" R_O2
+inline int R_O3 = 11;
+#pragma D binding "1.0" R_O3
+inline int R_O4 = 12;
+#pragma D binding "1.0" R_O4
+inline int R_O5 = 13;
+#pragma D binding "1.0" R_O5
+inline int R_O6 = 14;
+#pragma D binding "1.0" R_O6
+inline int R_O7 = 15;
+#pragma D binding "1.0" R_O7
+
+inline int R_L0 = 16;
+#pragma D binding "1.0" R_L0
+inline int R_L1 = 17;
+#pragma D binding "1.0" R_L1
+inline int R_L2 = 18;
+#pragma D binding "1.0" R_L2
+inline int R_L3 = 19;
+#pragma D binding "1.0" R_L3
+inline int R_L4 = 20;
+#pragma D binding "1.0" R_L4
+inline int R_L5 = 21;
+#pragma D binding "1.0" R_L5
+inline int R_L6 = 22;
+#pragma D binding "1.0" R_L6
+inline int R_L7 = 23;
+#pragma D binding "1.0" R_L7
+
+inline int R_I0 = 24;
+#pragma D binding "1.0" R_I0
+inline int R_I1 = 25;
+#pragma D binding "1.0" R_I1
+inline int R_I2 = 26;
+#pragma D binding "1.0" R_I2
+inline int R_I3 = 27;
+#pragma D binding "1.0" R_I3
+inline int R_I4 = 28;
+#pragma D binding "1.0" R_I4
+inline int R_I5 = 29;
+#pragma D binding "1.0" R_I5
+inline int R_I6 = 30;
+#pragma D binding "1.0" R_I6
+inline int R_I7 = 31;
+#pragma D binding "1.0" R_I7
+
+inline int R_CCR = 32;
+#pragma D binding "1.0" R_CCR
+inline int R_PC = 33;
+#pragma D binding "1.0" R_PC
+inline int R_nPC = 34;
+#pragma D binding "1.0" R_nPC
+inline int R_NPC = R_nPC;
+#pragma D binding "1.0" R_NPC
+inline int R_Y = 35;
+#pragma D binding "1.0" R_Y
+inline int R_ASI = 36;
+#pragma D binding "1.0" R_ASI
+inline int R_FPRS = 37;
+#pragma D binding "1.0" R_FPRS
+inline int R_PS = R_CCR;
+#pragma D binding "1.0" R_PS
+inline int R_SP = R_O6;
+#pragma D binding "1.0" R_SP
+inline int R_FP = R_I6;
+#pragma D binding "1.0" R_FP
+inline int R_R0 = R_O0;
+#pragma D binding "1.0" R_R0
+inline int R_R1 = R_O1;
+#pragma D binding "1.0" R_R1