Merge from vendor: libdtrace MD parts needed by fasttrap.

Sponsored by:	The FreeBSD Foundation

3 files changed, 687 insertions, 0 deletions

diff --git a/cddl/contrib/opensolaris/lib/libdtrace/i386/dt_isadep.c b/cddl/contrib/opensolaris/lib/libdtrace/i386/dt_isadep.c
new file mode 100644
index 000000000000..c1484a40742f
--- /dev/null
+++ b/cddl/contrib/opensolaris/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/cddl/contrib/opensolaris/lib/libdtrace/i386/regs.d.in b/cddl/contrib/opensolaris/lib/libdtrace/i386/regs.d.in
new file mode 100644
index 000000000000..3328f33515b0
--- /dev/null
+++ b/cddl/contrib/opensolaris/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/cddl/contrib/opensolaris/lib/libdtrace/i386/regs.sed.in b/cddl/contrib/opensolaris/lib/libdtrace/i386/regs.sed.in
new file mode 100644
index 000000000000..2b2080fc9d03
--- /dev/null
+++ b/cddl/contrib/opensolaris/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)
+