Mercurial > illumos > illumos-gate
changeset 13893:b67bcd07cb92
3337 x64 link-editor is painfully literal-minded about TLS
Reviewed by: Gordon Ross <gwr@nexenta.com>
Reviewed by: Hans Rosenfeld <hans.rosenfeld@nexenta.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>
Approved by: Robert Mustacchi <rm@joyent.com>
line wrap: on
line diff
--- a/usr/src/cmd/sgs/libld/common/machrel.amd.c Fri Nov 30 06:41:32 2012 -0800 +++ b/usr/src/cmd/sgs/libld/common/machrel.amd.c Fri Nov 02 23:38:32 2012 -0400 @@ -514,6 +514,23 @@ 0x00, 0x00, 0x00, 0x00 }; +#define REX_B 0x1 +#define REX_X 0x2 +#define REX_R 0x4 +#define REX_W 0x8 +#define REX_PREFIX 0x40 + +#define REX_RW (REX_PREFIX | REX_R | REX_W) +#define REX_BW (REX_PREFIX | REX_B | REX_W) +#define REX_BRW (REX_PREFIX | REX_B | REX_R | REX_W) + +#define REG_ESP 0x4 + +#define INSN_ADDMR 0x03 /* addq mem,reg */ +#define INSN_ADDIR 0x81 /* addq imm,reg */ +#define INSN_MOVMR 0x8b /* movq mem,reg */ +#define INSN_MOVIR 0xc7 /* movq imm,reg */ +#define INSN_LEA 0x8d /* leaq mem,reg */ static Fixupret tls_fixups(Ofl_desc *ofl, Rel_desc *arsp) @@ -526,6 +543,10 @@ (uintptr_t)_elf_getxoff(arsp->rel_isdesc->is_indata) + (uintptr_t)RELAUX_GET_OSDESC(arsp)->os_outdata->d_buf); + /* + * Note that in certain of the original insn sequences below, the + * instructions are not necessarily adjacent + */ if (sdp->sd_ref == REF_DYN_NEED) { /* * IE reference model @@ -605,35 +626,88 @@ (void) memcpy(offset, tlsinstr_gd_le, sizeof (tlsinstr_gd_le)); return (FIX_RELOC); - case R_AMD64_GOTTPOFF: + case R_AMD64_GOTTPOFF: { /* * IE -> LE * - * Transition: - * 0x00 movq %fs:0, %rax - * 0x09 addq x@gottopoff(%rip), %rax - * 0x10 + * Transition 1: + * movq %fs:0, %reg + * addq x@gottpoff(%rip), %reg + * To: + * movq %fs:0, %reg + * leaq x@tpoff(%reg), %reg + * + * Transition (as a special case): + * movq %fs:0, %r12/%rsp + * addq x@gottpoff(%rip), %r12/%rsp * To: - * 0x00 movq %fs:0, %rax - * 0x09 leaq x@tpoff(%rax), %rax - * 0x10 + * movq %fs:0, %r12/%rsp + * addq x@tpoff(%rax), %r12/%rsp + * + * Transition 2: + * movq x@gottpoff(%rip), %reg + * movq %fs:(%reg), %reg + * To: + * movq x@tpoff(%reg), %reg + * movq %fs:(%reg), %reg */ + Conv_inv_buf_t inv_buf; + uint8_t reg; /* Register */ + + offset -= 3; + + reg = offset[2] >> 3; /* Encoded dest. reg. operand */ + DBG_CALL(Dbg_reloc_transition(ofl->ofl_lml, M_MACH, R_AMD64_TPOFF32, arsp, ld_reloc_sym_name)); arsp->rel_rtype = R_AMD64_TPOFF32; arsp->rel_raddend = 0; /* - * Adjust 'offset' to beginning of instruction sequence. + * This is transition 2, and the special case of form 1 where + * a normal transition would index %rsp or %r12 and need a SIB + * byte in the leaq for which we lack space */ - offset -= 12; + if ((offset[1] == INSN_MOVMR) || + ((offset[1] == INSN_ADDMR) && (reg == REG_ESP))) { + /* + * If we needed an extra bit of MOD.reg to refer to + * this register as the dest of the original movq we + * need an extra bit of MOD.rm to refer to it in the + * dest of the replacement movq or addq. + */ + if (offset[0] == REX_RW) + offset[0] = REX_BW; + + offset[1] = (offset[1] == INSN_MOVMR) ? + INSN_MOVIR : INSN_ADDIR; + offset[2] = 0xc0 | reg; - /* - * Same code sequence used in the GD -> LE transition. - */ - (void) memcpy(offset, tlsinstr_gd_le, sizeof (tlsinstr_gd_le)); - return (FIX_RELOC); + return (FIX_RELOC); + } else if (offset[1] == INSN_ADDMR) { + /* + * If we needed an extra bit of MOD.reg to refer to + * this register in the dest of the addq we need an + * extra bit of both MOD.reg and MOD.rm to refer to it + * in the source and dest of the leaq + */ + if (offset[0] == REX_RW) + offset[0] = REX_BRW; + offset[1] = INSN_LEA; + offset[2] = 0x80 | (reg << 3) | reg; + + return (FIX_RELOC); + } + + ld_eprintf(ofl, ERR_FATAL, MSG_INTL(MSG_REL_BADTLSINS), + conv_reloc_amd64_type(arsp->rel_rtype, 0, &inv_buf), + arsp->rel_isdesc->is_file->ifl_name, + ld_reloc_sym_name(arsp), + arsp->rel_isdesc->is_name, + EC_OFF(arsp->rel_roffset)); + return (FIX_ERROR); + } case R_AMD64_TLSLD: /* * LD -> LE
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usr/src/cmd/sgs/test/ld/x64/tls/ie/Makefile Fri Nov 02 23:38:32 2012 -0400 @@ -0,0 +1,87 @@ +# +# This file and its contents are supplied under the terms of the +# Common Development and Distribution License ("CDDL"), version 1.0. +# You may only use this file in accordance with the terms of version +# 1.0 of the CDDL. +# +# A full copy of the text of the CDDL should have accompanied this +# source. A copy of the CDDL is also available via the Internet at +# http://www.illumos.org/license/CDDL. +# + +# Copyright 2012, Richard Lowe. + +include $(SRC)/Makefile.master + +# We have to use GCC, and only GCC. The best way is to ask cw(1) which GCC to use. +CC_CMD = $(ONBLD_TOOLS)/bin/$(MACH)/cw -_gcc -_compiler +CC = $(CC_CMD:sh) +CFLAGS = -O1 -m64 + +LINK.c = env LD_ALTEXEC=$(PROTO)/usr/bin/amd64/ld $(CC) $(CFLAGS) -o $@ $^ +COMPILE.c = $(CC) $(CFLAGS) -c -o $@ $^ +COMPILE.s = $(CC) $(CFLAGS) -c -o $@ $^ + +.KEEP_STATE: + +install default: all + +.c.o: + $(COMPILE.c) + +.s.o: + $(COMPILE.s) + +# A basic use of TLS that uses the movq m/r --> movq i/r variant +PROGS += style2 +STYLE2OBJS = style2.o +style2: $(STYLE2OBJS) + $(LINK.c) + +# A copy of style2 that uses %r13 in the TLS sequence, and thus excercises the +# REX transitions of the movq mem,reg -> movq imm,reg variant. +PROGS += style2-with-r13 +STYLE2R13OBJS = style2-with-r13.o +style2-with-r13: $(STYLE2R13OBJS) + $(LINK.c) + +# A copy of style2 that uses %r12 in the TLS sequence, so we can verify that +# it is _not_ special to this variant +PROGS += style2-with-r12 +STYLE2R12OBJS = style2-with-r12.o +style2-with-r12: $(STYLE2R12OBJS) + $(LINK.c) + +# A copy of style2 that has a R_AMD64_GOTTPOFF relocation with a bad insn sequence +STYLE2BADNESSOBJS = style2-with-badness.o +style2-with-badness: $(STYLE2BADNESSOBJS) + -$(LINK.c) + +# A basic use of TLS that uses the addq mem/reg --> leaq mem,reg variant +PROGS += style1 +STYLE1OBJS = style1-main.o style1-func.o +style1: $(STYLE1OBJS) + $(LINK.c) + +# A copy of style1-func that uses %r13 in the TLS sequence and thus excercises +# the REX transitions. of the addq mem,reg --> leaq mem,reg variant +PROGS += style1-with-r13 +STYLE1R13OBJS = style1-main.o style1-func-with-r13.o +style1-with-r13: $(STYLE1R13OBJS) + $(LINK.c) + +# A copy of style1-func that uses %r12 to test the addq mem,reg --> addq imm,reg variant +PROGS += style1-with-r12 +STYLE1R12OBJS = style1-main.o style1-func-with-r12.o +style1-with-r12: $(STYLE1R12OBJS) + $(LINK.c) + +all: $(PROGS) + +clobber clean: + rm -f $(PROGS) $(STYLE1OBJS) $(STYLE1R13OBJS) $(STYLE1R12OBJS) \ + $(STYLE2OBJS) $(STYLE2R13OBJS) $(STYLE2R12OBJS) $(STYLE2BADNESSOBJS) + +fail: style2-with-badness FRC + +FRC:
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usr/src/cmd/sgs/test/ld/x64/tls/ie/README Fri Nov 02 23:38:32 2012 -0400 @@ -0,0 +1,9 @@ +This tests the x64 link-editor's handling of Initial Executable TLS sequences. + +The original C source files are in orig/ but unused, since we need to avoid +any changes to the compiler influencing our tests. + + % ksh x64-ie-test.sh /path/to/proto/root + pass: addq-->leaq 1 + ... + pass: bad insn sequence
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usr/src/cmd/sgs/test/ld/x64/tls/ie/orig/style1-func.c Fri Nov 02 23:38:32 2012 -0400 @@ -0,0 +1,24 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright 2012, Richard Lowe. + */ + +#include <stdio.h> + +extern __thread char *foo, *bar; + +void +func() +{ + printf("foo: %p bar: %p\n", &foo, &bar); +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usr/src/cmd/sgs/test/ld/x64/tls/ie/orig/style1-main.c Fri Nov 02 23:38:32 2012 -0400 @@ -0,0 +1,29 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright 2012, Richard Lowe. + */ + +#include <stdio.h> + +extern void func(); + +__thread char *foo = "foo"; +__thread char *bar = "bar"; + +int +main(void) +{ + printf("foo: %p bar: %p\n", &foo, &bar); + func(); + return (0); +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usr/src/cmd/sgs/test/ld/x64/tls/ie/orig/style2.c Fri Nov 02 23:38:32 2012 -0400 @@ -0,0 +1,25 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright 2012, Richard Lowe. + */ + +#include <stdio.h> + +__thread char *foo __attribute__((tls_model("initial-exec"))) = "foo"; + +int +main(void) +{ + printf("foo: %p\n", &foo); + return (0); +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usr/src/cmd/sgs/test/ld/x64/tls/ie/style1-func-with-r12.s Fri Nov 02 23:38:32 2012 -0400 @@ -0,0 +1,39 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright 2012, Richard Lowe. + */ + + .section .rodata.str1.1,"aMS",@progbits,1 +.LC0: + .string "foo: %p bar: %p\n" + .text +.globl func + .type func, @function +func: +.LFB0: + pushq %rbp +.LCFI0: + movq %rsp, %rbp +.LCFI1: + movq %fs:0, %r12 + movq %r12, %rdx + addq bar@GOTTPOFF(%rip), %rdx + addq foo@GOTTPOFF(%rip), %r12 + movq %r12, %rsi + movl $.LC0, %edi + movl $0, %eax + call printf + leave + ret +.LFE0: + .size func, .-func
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usr/src/cmd/sgs/test/ld/x64/tls/ie/style1-func-with-r13.s Fri Nov 02 23:38:32 2012 -0400 @@ -0,0 +1,38 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright 2012, Richard Lowe. + */ + .section .rodata.str1.1,"aMS",@progbits,1 +.LC0: + .string "foo: %p bar: %p\n" + .text +.globl func + .type func, @function +func: +.LFB0: + pushq %rbp +.LCFI0: + movq %rsp, %rbp +.LCFI1: + movq %fs:0, %r13 + movq %r13, %rdx + addq bar@GOTTPOFF(%rip), %rdx + addq foo@GOTTPOFF(%rip), %r13 + movq %r13, %rsi + movl $.LC0, %edi + movl $0, %eax + call printf + leave + ret +.LFE0: + .size func, .-func
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usr/src/cmd/sgs/test/ld/x64/tls/ie/style1-func.s Fri Nov 02 23:38:32 2012 -0400 @@ -0,0 +1,38 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright 2012, Richard Lowe. + */ + + .section .rodata.str1.1,"aMS",@progbits,1 +.LC0: + .string "foo: %p bar: %p\n" + .text +.globl func + .type func, @function +func: +.LFB0: + pushq %rbp +.LCFI0: + movq %rsp, %rbp +.LCFI1: + movq %fs:0, %rsi + movq %rsi, %rdx + addq bar@GOTTPOFF(%rip), %rdx + addq foo@GOTTPOFF(%rip), %rsi + movl $.LC0, %edi + movl $0, %eax + call printf + leave + ret +.LFE0: + .size func, .-func
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usr/src/cmd/sgs/test/ld/x64/tls/ie/style1-main.s Fri Nov 02 23:38:32 2012 -0400 @@ -0,0 +1,60 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright 2012, Richard Lowe. + */ + + .section .rodata.str1.1,"aMS",@progbits,1 +.LC0: + .string "foo: %p bar: %p\n" + .text +.globl main + .type main, @function +main: +.LFB0: + pushq %rbp +.LCFI0: + movq %rsp, %rbp +.LCFI1: + movq %fs:0, %rsi + leaq bar@TPOFF(%rsi), %rdx + addq $foo@TPOFF, %rsi + movl $.LC0, %edi + movl $0, %eax + call printf + movl $0, %eax + call func + movl $0, %eax + leave + ret +.LFE0: + .size main, .-main +.globl foo + .section .rodata.str1.1 +.LC1: + .string "foo" + .section .tdata,"awT",@progbits + .align 8 + .type foo, @object + .size foo, 8 +foo: + .quad .LC1 +.globl bar + .section .rodata.str1.1 +.LC2: + .string "bar" + .section .tdata + .align 8 + .type bar, @object + .size bar, 8 +bar: + .quad .LC2
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usr/src/cmd/sgs/test/ld/x64/tls/ie/style2-with-badness.s Fri Nov 02 23:38:32 2012 -0400 @@ -0,0 +1,47 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright 2012, Richard Lowe. + */ + + .section .rodata.str1.1,"aMS",@progbits,1 +.LC0: + .string "foo: %p\n" + .text +.globl main + .type main, @function +main: +.LFB0: + pushq %rbp +.LCFI0: + movq %rsp, %rbp +.LCFI1: + leaq foo@GOTTPOFF(%rip), %rsi + addq %fs:0, %rsi + movl $.LC0, %edi + movl $0, %eax + call printf + movl $0, %eax + leave + ret +.LFE0: + .size main, .-main +.globl foo + .section .rodata.str1.1 +.LC1: + .string "foo" + .section .tdata,"awT",@progbits + .align 8 + .type foo, @object + .size foo, 8 +foo: + .quad .LC1
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usr/src/cmd/sgs/test/ld/x64/tls/ie/style2-with-r12.s Fri Nov 02 23:38:32 2012 -0400 @@ -0,0 +1,48 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright 2012, Richard Lowe. + */ + + .section .rodata.str1.1,"aMS",@progbits,1 +.LC0: + .string "foo: %p\n" + .text +.globl main + .type main, @function +main: +.LFB0: + pushq %rbp +.LCFI0: + movq %rsp, %rbp +.LCFI1: + movq foo@GOTTPOFF(%rip), %r12 + addq %fs:0, %r12 + movq %r12, %rsi + movl $.LC0, %edi + movl $0, %eax + call printf + movl $0, %eax + leave + ret +.LFE0: + .size main, .-main +.globl foo + .section .rodata.str1.1 +.LC1: + .string "foo" + .section .tdata,"awT",@progbits + .align 8 + .type foo, @object + .size foo, 8 +foo: + .quad .LC1
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usr/src/cmd/sgs/test/ld/x64/tls/ie/style2-with-r13.s Fri Nov 02 23:38:32 2012 -0400 @@ -0,0 +1,48 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright 2012, Richard Lowe. + */ + + .section .rodata.str1.1,"aMS",@progbits,1 +.LC0: + .string "foo: %p\n" + .text +.globl main + .type main, @function +main: +.LFB0: + pushq %rbp +.LCFI0: + movq %rsp, %rbp +.LCFI1: + movq foo@GOTTPOFF(%rip), %r13 + addq %fs:0, %r13 + movq %r13, %rsi + movl $.LC0, %edi + movl $0, %eax + call printf + movl $0, %eax + leave + ret +.LFE0: + .size main, .-main +.globl foo + .section .rodata.str1.1 +.LC1: + .string "foo" + .section .tdata,"awT",@progbits + .align 8 + .type foo, @object + .size foo, 8 +foo: + .quad .LC1
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usr/src/cmd/sgs/test/ld/x64/tls/ie/style2.s Fri Nov 02 23:38:32 2012 -0400 @@ -0,0 +1,47 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright 2012, Richard Lowe. + */ + + .section .rodata.str1.1,"aMS",@progbits,1 +.LC0: + .string "foo: %p\n" + .text +.globl main + .type main, @function +main: +.LFB0: + pushq %rbp +.LCFI0: + movq %rsp, %rbp +.LCFI1: + movq foo@GOTTPOFF(%rip), %rsi + addq %fs:0, %rsi + movl $.LC0, %edi + movl $0, %eax + call printf + movl $0, %eax + leave + ret +.LFE0: + .size main, .-main +.globl foo + .section .rodata.str1.1 +.LC1: + .string "foo" + .section .tdata,"awT",@progbits + .align 8 + .type foo, @object + .size foo, 8 +foo: + .quad .LC1
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/usr/src/cmd/sgs/test/ld/x64/tls/ie/x64-ie-test.sh Fri Nov 02 23:38:32 2012 -0400 @@ -0,0 +1,62 @@ +#!/bin/ksh +# +# This file and its contents are supplied under the terms of the +# Common Development and Distribution License ("CDDL"), version 1.0. +# You may only use this file in accordance with the terms of version +# 1.0 of the CDDL. +# +# A full copy of the text of the CDDL should have accompanied this +# source. A copy of the CDDL is also available via the Internet at +# http://www.illumos.org/license/CDDL. +# + +# Copyright 2012, Richard Lowe. + +function grep_test { + name=$1 + pattern=$2 + + if /usr/xpg4/bin/fgrep -q "${pattern}"; then + print -u2 "pass: $name" + else + print -u2 "FAIL: $name" + fi +} + +function dis_test { + name=${1} + func=${2} + file=${3} + pattern=${4} + + dis -F${func} ${file} | grep_test "${name}" "${pattern}" +} + +make PROTO="${1}" + +dis_test "addq-->leaq 1" func style1 \ + 'func+0x10: 48 8d 92 f8 ff ff leaq -0x8(%rdx),%rdx' +dis_test "addq-->leaq 2" func style1 \ + 'func+0x17: 48 8d b6 f0 ff ff leaq -0x10(%rsi),%rsi' + +dis_test "addq-->leaq w/REX 1" func style1-with-r13 \ + 'func+0x10: 48 8d 92 f8 ff ff leaq -0x8(%rdx),%rdx' +dis_test "addq-->leaq w/REX 2" func style1-with-r13 \ + 'func+0x17: 4d 8d ad f0 ff ff leaq -0x10(%r13),%r13' + +dis_test "addq-->addq for SIB 1" func style1-with-r12 \ + 'func+0x10: 48 8d 92 f8 ff ff leaq -0x8(%rdx),%rdx' +dis_test "addq-->addq for SIB 2" func style1-with-r12 \ + 'func+0x17: 49 81 c4 f0 ff ff addq $-0x10,%r12 <0xfffffffffffffff0>' + +dis_test "movq-->movq" main style2 \ + 'main+0x4: 48 c7 c6 f0 ff ff movq $-0x10,%rsi <0xfffffffffffffff0>' + +dis_test "movq-->movq w/REX" main style2-with-r13 \ + 'main+0x4: 49 c7 c5 f0 ff ff movq $-0x10,%r13 <0xfffffffffffffff0>' + +dis_test "movq-->movq incase of SIB" main style2-with-r12 \ + 'main+0x4: 49 c7 c4 f0 ff ff movq $-0x10,%r12 <0xfffffffffffffff0>' + +make PROTO="${1}" fail 2>&1 | grep_test "bad insn sequence" \ + 'ld: fatal: relocation error: R_AMD64_TPOFF32: file style2-with-badness.o: symbol foo: section .text: offset 0x7, relocation against unknown TLS instruction sequence'