Date: Sun, 26 Jan 2014 00:37:21 +0000 (UTC) From: "Pedro F. Giffuni" <pfg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r261175 - in head/contrib/binutils: gas/config opcodes Message-ID: <201401260037.s0Q0bL0t006626@svn.freebsd.org>
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Author: pfg Date: Sun Jan 26 00:37:21 2014 New Revision: 261175 URL: http://svnweb.freebsd.org/changeset/base/261175 Log: binutils: add support for Intel SMAP-related instructions Add support for stac/clac instructions to manipulate the flag that controls the behaviour of Intel's Supervisor Mode Access Prevention (SMAP) feature. Tested by: dim Obtained from: OpenBSD MFC after: 5 days Modified: head/contrib/binutils/gas/config/tc-i386.c head/contrib/binutils/opcodes/i386-dis.c head/contrib/binutils/opcodes/i386-opc.h head/contrib/binutils/opcodes/i386-tbl.h Modified: head/contrib/binutils/gas/config/tc-i386.c ============================================================================== --- head/contrib/binutils/gas/config/tc-i386.c Sat Jan 25 23:59:20 2014 (r261174) +++ head/contrib/binutils/gas/config/tc-i386.c Sun Jan 26 00:37:21 2014 (r261175) @@ -1827,7 +1827,7 @@ md_assemble (line) { expressionS *exp; - if ((i.tm.cpu_flags & CpuSSE3) && i.operands > 0) + if ((i.tm.cpu_flags & (CpuSSE3|CpuSMAP)) && i.operands > 0) { /* Streaming SIMD extensions 3 Instructions have the fixed operands with an opcode suffix which is coded in the same Modified: head/contrib/binutils/opcodes/i386-dis.c ============================================================================== --- head/contrib/binutils/opcodes/i386-dis.c Sat Jan 25 23:59:20 2014 (r261174) +++ head/contrib/binutils/opcodes/i386-dis.c Sun Jan 26 00:37:21 2014 (r261175) @@ -6257,6 +6257,16 @@ PNI_Fixup (int extrachar ATTRIBUTE_UNUSE codep++; } + else if (modrm.mod == 3 && modrm.reg == 1 && modrm.rm <= 3) + { + size_t olen = strlen (obuf); + char *p = obuf + olen - 4; + if (*codep == 0xca) + strcpy (p, "clac"); + else if (*codep == 0xcb) + strcpy (p, "stac"); + codep++; + } else OP_M (0, sizeflag); } Modified: head/contrib/binutils/opcodes/i386-opc.h ============================================================================== --- head/contrib/binutils/opcodes/i386-opc.h Sat Jan 25 23:59:20 2014 (r261174) +++ head/contrib/binutils/opcodes/i386-opc.h Sun Jan 26 00:37:21 2014 (r261175) @@ -80,6 +80,7 @@ typedef struct template #define CpuPCLMUL 0x10000000 /* Carry-less Multiplication extensions */ #define CpuRdRnd 0x20000000 /* Intel Random Number Generator extensions */ +#define CpuSMAP 0x40000000 /* Intel Supervisor Mode Access Prevention */ /* SSE4.1/4.2 Instructions required */ #define CpuSSE4 (CpuSSE4_1|CpuSSE4_2) @@ -88,7 +89,7 @@ typedef struct template #define CpuUnknownFlags (Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686 \ |CpuP4|CpuSledgehammer|CpuMMX|CpuMMX2|CpuSSE|CpuSSE2|CpuSSE3|CpuVMX \ |Cpu3dnow|Cpu3dnowA|CpuK6|CpuPadLock|CpuSVME|CpuSSSE3|CpuSSE4_1 \ - |CpuSSE4_2|CpuABM|CpuSSE4a|CpuXSAVE|CpuAES|CpuPCLMUL|CpuRdRnd) + |CpuSSE4_2|CpuABM|CpuSSE4a|CpuXSAVE|CpuAES|CpuPCLMUL|CpuRdRnd|CpuSMAP) /* the bits in opcode_modifier are used to generate the final opcode from the base_opcode. These bits also are used to detect alternate forms of Modified: head/contrib/binutils/opcodes/i386-tbl.h ============================================================================== --- head/contrib/binutils/opcodes/i386-tbl.h Sat Jan 25 23:59:20 2014 (r261174) +++ head/contrib/binutils/opcodes/i386-tbl.h Sun Jan 26 00:37:21 2014 (r261175) @@ -4379,6 +4379,12 @@ const template i386_optab[] = {"rdrand", 1, 0x0fc7, 0x6, CpuRdRnd, Modrm|NoSuf, { Reg16|Reg32|Reg64 } }, + + /* Intel Supervisor Mode Access Prevention extensions */ + {"clac", 0, 0x0f01, 0xca, CpuSMAP, + NoSuf|ImmExt, { 0, 0, 0 } }, + {"stac", 0, 0x0f01, 0xcb, CpuSMAP, + NoSuf|ImmExt, { 0, 0, 0 } }, { NULL, 0, 0, 0, 0, 0, { 0 } } };
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