diff options
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 14 | ||||
| -rw-r--r-- | gdb/Makefile.in | 2 | ||||
| -rw-r--r-- | gdb/common/i386-cpuid.h | 63 | ||||
| -rw-r--r-- | gdb/common/i386-gcc-cpuid.h (renamed from gdb/testsuite/gdb.arch/i386-cpuid.h) | 140 | ||||
| -rw-r--r-- | gdb/common/linux-btrace.c | 41 | ||||
| -rw-r--r-- | gdb/go32-nat.c | 22 | ||||
| -rw-r--r-- | gdb/testsuite/ChangeLog | 8 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.arch/i386-avx.c | 2 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.arch/i386-avx.exp | 2 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.arch/i386-sse.c | 5 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.arch/i386-sse.exp | 2 |
11 files changed, 231 insertions, 70 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index b2a9b91cea5..340b66bd16f 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,17 @@ +2013-06-19 Mike Frysinger <vapier@gentoo.org> + + * Makefile.in (HFILES_NO_SRCDIR): Add common/i386-cpuid.h and + common/i386-gcc-cpuid.h. + * common/i386-cpuid.h: New wrapper header around i386-gcc-cpuid.h. + * common/i386-gcc-cpuid.h: Rename from testsuite/gdb.arch/i386-cpuid.h. + Copy the latest version from upstream gcc. + * common/linux-btrace.c: Include i386-cpuid.h. + (intel_supports_btrace): Delete x86 ifdefs and replace inline asm with + call to i386_cpuid. + (cpu_supports_btrace): Likewise. + * go32-nat.c: Include i386-cpuid.h. + (go32_sysinfo): Add (disabled) calls to i386_cpuid with comments. + 2013-06-19 Doug Evans <dje@google.com> * symfile.c (symfile_bfd_open): Delete unnecessary declaration. diff --git a/gdb/Makefile.in b/gdb/Makefile.in index a6336a291d8..71058e509e6 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -850,7 +850,7 @@ common/common-utils.h common/xml-utils.h common/buffer.h common/ptid.h \ common/format.h common/host-defs.h utils.h common/queue.h common/gdb_string.h \ common/linux-osdata.h gdb-dlfcn.h auto-load.h probe.h stap-probe.h \ gdb_bfd.h sparc-ravenscar-thread.h ppc-ravenscar-thread.h common/linux-btrace.h \ -ctf.h +ctf.h common/i386-cpuid.h common/i386-gcc-cpuid.h # Header files that already have srcdir in them, or which are in objdir. diff --git a/gdb/common/i386-cpuid.h b/gdb/common/i386-cpuid.h new file mode 100644 index 00000000000..8bb28c533d3 --- /dev/null +++ b/gdb/common/i386-cpuid.h @@ -0,0 +1,63 @@ +/* C API for x86 cpuid insn. + Copyright (C) 2007-2013 Free Software Foundation, Inc. + + This file is part of GDB. + + This file is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by the + Free Software Foundation; either version 3, or (at your option) any + later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#ifndef I386_CPUID_COMMON_H +#define I386_CPUID_COMMON_H + +/* Always include the header for the cpu bit defines. */ +#include "i386-gcc-cpuid.h" + +#if defined(__i386__) || defined(__x86_64__) + +/* Return cpuid data for requested cpuid level, as found in returned + eax, ebx, ecx and edx registers. The function checks if cpuid is + supported and returns 1 for valid cpuid information or 0 for + unsupported cpuid level. Pointers may be non-null. */ + +static __inline int +i386_cpuid (unsigned int __level, + unsigned int *__eax, unsigned int *__ebx, + unsigned int *__ecx, unsigned int *__edx) +{ + unsigned int __scratch; + + if (!__eax) + __eax = &__scratch; + if (!__ebx) + __ebx = &__scratch; + if (!__ecx) + __ecx = &__scratch; + if (!__edx) + __edx = &__scratch; + + return __get_cpuid (__level, __eax, __ebx, __ecx, __edx); +} + +#else + +static __inline int +i386_cpuid (unsigned int __level, + unsigned int *__eax, unsigned int *__ebx, + unsigned int *__ecx, unsigned int *__edx) +{ + return 0; +} + +#endif /* i386 && x86_64 */ + +#endif /* I386_CPUID_COMMON_H */ diff --git a/gdb/testsuite/gdb.arch/i386-cpuid.h b/gdb/common/i386-gcc-cpuid.h index 084a083006c..e045ba83bed 100644 --- a/gdb/testsuite/gdb.arch/i386-cpuid.h +++ b/gdb/common/i386-gcc-cpuid.h @@ -1,6 +1,8 @@ -/* Helper file for i386 platform. Runtime check for MMX/SSE/SSE2/AVX - * support. Copied from gcc 4.4. - * +/* + * Helper cpuid.h file copied from gcc-4.8.0. Code in gdb should not + * include this directly, but pull in i386-cpuid.h and use that func. + */ +/* * Copyright (C) 2007-2013 Free Software Foundation, Inc. * * This file is free software; you can redistribute it and/or modify it @@ -26,6 +28,7 @@ /* %ecx */ #define bit_SSE3 (1 << 0) #define bit_PCLMUL (1 << 1) +#define bit_LZCNT (1 << 5) #define bit_SSSE3 (1 << 9) #define bit_FMA (1 << 12) #define bit_CMPXCHG16B (1 << 13) @@ -37,6 +40,8 @@ #define bit_XSAVE (1 << 26) #define bit_OSXSAVE (1 << 27) #define bit_AVX (1 << 28) +#define bit_F16C (1 << 29) +#define bit_RDRND (1 << 30) /* %edx */ #define bit_CMPXCHG8B (1 << 8) @@ -51,49 +56,133 @@ #define bit_LAHF_LM (1 << 0) #define bit_ABM (1 << 5) #define bit_SSE4a (1 << 6) +#define bit_PRFCHW (1 << 8) #define bit_XOP (1 << 11) #define bit_LWP (1 << 15) #define bit_FMA4 (1 << 16) +#define bit_TBM (1 << 21) /* %edx */ +#define bit_MMXEXT (1 << 22) #define bit_LM (1 << 29) #define bit_3DNOWP (1 << 30) #define bit_3DNOW (1 << 31) +/* Extended Features (%eax == 7) */ +#define bit_FSGSBASE (1 << 0) +#define bit_BMI (1 << 3) +#define bit_HLE (1 << 4) +#define bit_AVX2 (1 << 5) +#define bit_BMI2 (1 << 8) +#define bit_RTM (1 << 11) +#define bit_RDSEED (1 << 18) +#define bit_ADX (1 << 19) + +/* Extended State Enumeration Sub-leaf (%eax == 13, %ecx == 1) */ +#define bit_XSAVEOPT (1 << 0) + +/* Signatures for different CPU implementations as returned in uses + of cpuid with level 0. */ +#define signature_AMD_ebx 0x68747541 +#define signature_AMD_ecx 0x444d4163 +#define signature_AMD_edx 0x69746e65 + +#define signature_CENTAUR_ebx 0x746e6543 +#define signature_CENTAUR_ecx 0x736c7561 +#define signature_CENTAUR_edx 0x48727561 + +#define signature_CYRIX_ebx 0x69727943 +#define signature_CYRIX_ecx 0x64616574 +#define signature_CYRIX_edx 0x736e4978 + +#define signature_INTEL_ebx 0x756e6547 +#define signature_INTEL_ecx 0x6c65746e +#define signature_INTEL_edx 0x49656e69 + +#define signature_TM1_ebx 0x6e617254 +#define signature_TM1_ecx 0x55504361 +#define signature_TM1_edx 0x74656d73 + +#define signature_TM2_ebx 0x756e6547 +#define signature_TM2_ecx 0x3638784d +#define signature_TM2_edx 0x54656e69 + +#define signature_NSC_ebx 0x646f6547 +#define signature_NSC_ecx 0x43534e20 +#define signature_NSC_edx 0x79622065 + +#define signature_NEXGEN_ebx 0x4778654e +#define signature_NEXGEN_ecx 0x6e657669 +#define signature_NEXGEN_edx 0x72446e65 + +#define signature_RISE_ebx 0x65736952 +#define signature_RISE_ecx 0x65736952 +#define signature_RISE_edx 0x65736952 + +#define signature_SIS_ebx 0x20536953 +#define signature_SIS_ecx 0x20536953 +#define signature_SIS_edx 0x20536953 + +#define signature_UMC_ebx 0x20434d55 +#define signature_UMC_ecx 0x20434d55 +#define signature_UMC_edx 0x20434d55 + +#define signature_VIA_ebx 0x20414956 +#define signature_VIA_ecx 0x20414956 +#define signature_VIA_edx 0x20414956 + +#define signature_VORTEX_ebx 0x74726f56 +#define signature_VORTEX_ecx 0x436f5320 +#define signature_VORTEX_edx 0x36387865 #if defined(__i386__) && defined(__PIC__) /* %ebx may be the PIC register. */ #if __GNUC__ >= 3 #define __cpuid(level, a, b, c, d) \ - __asm__ ("xchg{l}\t{%%}ebx, %1\n\t" \ + __asm__ ("xchg{l}\t{%%}ebx, %k1\n\t" \ "cpuid\n\t" \ - "xchg{l}\t{%%}ebx, %1\n\t" \ - : "=a" (a), "=r" (b), "=c" (c), "=d" (d) \ + "xchg{l}\t{%%}ebx, %k1\n\t" \ + : "=a" (a), "=&r" (b), "=c" (c), "=d" (d) \ : "0" (level)) #define __cpuid_count(level, count, a, b, c, d) \ - __asm__ ("xchg{l}\t{%%}ebx, %1\n\t" \ + __asm__ ("xchg{l}\t{%%}ebx, %k1\n\t" \ "cpuid\n\t" \ - "xchg{l}\t{%%}ebx, %1\n\t" \ - : "=a" (a), "=r" (b), "=c" (c), "=d" (d) \ + "xchg{l}\t{%%}ebx, %k1\n\t" \ + : "=a" (a), "=&r" (b), "=c" (c), "=d" (d) \ : "0" (level), "2" (count)) #else /* Host GCCs older than 3.0 weren't supporting Intel asm syntax nor alternatives in i386 code. */ #define __cpuid(level, a, b, c, d) \ - __asm__ ("xchgl\t%%ebx, %1\n\t" \ + __asm__ ("xchgl\t%%ebx, %k1\n\t" \ "cpuid\n\t" \ - "xchgl\t%%ebx, %1\n\t" \ - : "=a" (a), "=r" (b), "=c" (c), "=d" (d) \ + "xchgl\t%%ebx, %k1\n\t" \ + : "=a" (a), "=&r" (b), "=c" (c), "=d" (d) \ : "0" (level)) #define __cpuid_count(level, count, a, b, c, d) \ - __asm__ ("xchgl\t%%ebx, %1\n\t" \ + __asm__ ("xchgl\t%%ebx, %k1\n\t" \ "cpuid\n\t" \ - "xchgl\t%%ebx, %1\n\t" \ - : "=a" (a), "=r" (b), "=c" (c), "=d" (d) \ + "xchgl\t%%ebx, %k1\n\t" \ + : "=a" (a), "=&r" (b), "=c" (c), "=d" (d) \ : "0" (level), "2" (count)) #endif +#elif defined(__x86_64__) && (defined(__code_model_medium__) || defined(__code_model_large__)) && defined(__PIC__) +/* %rbx may be the PIC register. */ +#define __cpuid(level, a, b, c, d) \ + __asm__ ("xchg{q}\t{%%}rbx, %q1\n\t" \ + "cpuid\n\t" \ + "xchg{q}\t{%%}rbx, %q1\n\t" \ + : "=a" (a), "=&r" (b), "=c" (c), "=d" (d) \ + : "0" (level)) + +#define __cpuid_count(level, count, a, b, c, d) \ + __asm__ ("xchg{q}\t{%%}rbx, %q1\n\t" \ + "cpuid\n\t" \ + "xchg{q}\t{%%}rbx, %q1\n\t" \ + : "=a" (a), "=&r" (b), "=c" (c), "=d" (d) \ + : "0" (level), "2" (count)) #else #define __cpuid(level, a, b, c, d) \ __asm__ ("cpuid\n\t" \ @@ -118,9 +207,9 @@ __get_cpuid_max (unsigned int __ext, unsigned int *__sig) { unsigned int __eax, __ebx, __ecx, __edx; -#ifndef __x86_64__ -#if __GNUC__ >= 3 +#ifdef __i386__ /* See if we can use cpuid. On AMD64 we always can. */ +#if __GNUC__ >= 3 __asm__ ("pushf{l|d}\n\t" "pushf{l|d}\n\t" "pop{l}\t%0\n\t" @@ -181,20 +270,3 @@ __get_cpuid (unsigned int __level, __cpuid (__level, *__eax, *__ebx, *__ecx, *__edx); return 1; } - -#ifndef NOINLINE -#define NOINLINE __attribute__ ((noinline)) -#endif - -unsigned int i386_cpuid (void) NOINLINE; - -unsigned int NOINLINE -i386_cpuid (void) -{ - unsigned int eax, ebx, ecx, edx; - - if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx)) - return 0; - - return edx; -} diff --git a/gdb/common/linux-btrace.c b/gdb/common/linux-btrace.c index 1f9a00188a4..0ec13bbb029 100644 --- a/gdb/common/linux-btrace.c +++ b/gdb/common/linux-btrace.c @@ -31,6 +31,7 @@ #include "regcache.h" #include "gdbthread.h" #include "gdb_wait.h" +#include "i386-cpuid.h" #if HAVE_LINUX_PERF_EVENT_H @@ -339,13 +340,10 @@ kernel_supports_btrace (void) static int intel_supports_btrace (void) { -#if defined __i386__ || defined __x86_64__ unsigned int cpuid, model, family; - __asm__ __volatile__ ("movl $1, %%eax;" - "cpuid;" - : "=a" (cpuid) - :: "%ebx", "%ecx", "%edx"); + if (!i386_cpuid (1, &cpuid, NULL, NULL, NULL)) + return 0; family = (cpuid >> 8) & 0xf; model = (cpuid >> 4) & 0xf; @@ -376,12 +374,6 @@ intel_supports_btrace (void) } return 1; - -#else /* !defined __i386__ && !defined __x86_64__ */ - - return 0; - -#endif /* !defined __i386__ && !defined __x86_64__ */ } /* Check whether the cpu supports branch tracing. */ @@ -389,22 +381,15 @@ intel_supports_btrace (void) static int cpu_supports_btrace (void) { -#if defined __i386__ || defined __x86_64__ + unsigned int ebx, ecx, edx; char vendor[13]; - __asm__ __volatile__ ("xorl %%ebx, %%ebx;" - "xorl %%ecx, %%ecx;" - "xorl %%edx, %%edx;" - "movl $0, %%eax;" - "cpuid;" - "movl %%ebx, %0;" - "movl %%edx, %1;" - "movl %%ecx, %2;" - : "=m" (vendor[0]), - "=m" (vendor[4]), - "=m" (vendor[8]) - : - : "%eax", "%ebx", "%ecx", "%edx"); + if (!i386_cpuid (0, NULL, &ebx, &ecx, &edx)) + return 0; + + memcpy (&vendor[0], &ebx, 4); + memcpy (&vendor[4], &ecx, 4); + memcpy (&vendor[8], &edx, 4); vendor[12] = '\0'; if (strcmp (vendor, "GenuineIntel") == 0) @@ -412,12 +397,6 @@ cpu_supports_btrace (void) /* Don't know about others. Let's assume they do. */ return 1; - -#else /* !defined __i386__ && !defined __x86_64__ */ - - return 0; - -#endif /* !defined __i386__ && !defined __x86_64__ */ } /* See linux-btrace.h. */ diff --git a/gdb/go32-nat.c b/gdb/go32-nat.c index 0d9bb9d574b..a3f75b29a00 100644 --- a/gdb/go32-nat.c +++ b/gdb/go32-nat.c @@ -96,6 +96,7 @@ #include "buildsym.h" #include "i387-tdep.h" #include "i386-tdep.h" +#include "i386-cpuid.h" #include "value.h" #include "regcache.h" #include "gdb_string.h" @@ -1141,6 +1142,21 @@ go32_sysinfo (char *arg, int from_tty) else if (u.machine[0] == 'i' && u.machine[1] > 4) { /* CPUID with EAX = 0 returns the Vendor ID. */ +#if 0 + /* Ideally we would use i386_cpuid(), but it needs someone to run + native tests first to make sure things actually work. They should. + http://sourceware.org/ml/gdb-patches/2013-05/msg00164.html */ + unsigned int eax, ebx, ecx, edx; + + if (i386_cpuid (0, &eax, &ebx, &ecx, &edx)) + { + cpuid_max = eax; + memcpy (&vendor[0], &ebx, 4); + memcpy (&vendor[4], &ecx, 4); + memcpy (&vendor[8], &edx, 4); + cpuid_vendor[12] = '\0'; + } +#else __asm__ __volatile__ ("xorl %%ebx, %%ebx;" "xorl %%ecx, %%ecx;" "xorl %%edx, %%edx;" @@ -1157,6 +1173,7 @@ go32_sysinfo (char *arg, int from_tty) : : "%eax", "%ebx", "%ecx", "%edx"); cpuid_vendor[12] = '\0'; +#endif } printf_filtered ("CPU Type.......................%s", u.machine); @@ -1182,6 +1199,10 @@ go32_sysinfo (char *arg, int from_tty) int amd_p = strcmp (cpuid_vendor, "AuthenticAMD") == 0; unsigned cpu_family, cpu_model; +#if 0 + /* See comment above about cpuid usage. */ + i386_cpuid (1, &cpuid_eax, &cpuid_ebx, NULL, &cpuid_edx); +#else __asm__ __volatile__ ("movl $1, %%eax;" "cpuid;" : "=a" (cpuid_eax), @@ -1189,6 +1210,7 @@ go32_sysinfo (char *arg, int from_tty) "=d" (cpuid_edx) : : "%ecx"); +#endif brand_idx = cpuid_ebx & 0xff; cpu_family = (cpuid_eax >> 8) & 0xf; cpu_model = (cpuid_eax >> 4) & 0xf; diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index 7fb31d47127..5e359e220b9 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,11 @@ +2013-06-19 Mike Frysinger <vapier@gentoo.org> + + * gdb.arch/i386-avx.c (have_avx): Change __get_cpuid call to i386_cpuid. + * gdb.arch/i386-avx.exp (additional_flags): Add -I${srcdir}/../common. + * gdb.arch/i386-cpuid.h: Moved to ../common/i386-gcc-cpuid.h. + * gdb.arch/i386-sse.c: Call new i386_cpuid function. + * gdb.arch/i386-see.exp (additional_flags): Add -I${srcdir}/../common. + 2013-06-19 Luis Machado <lgustavo@codesourcery.com> * gdb.base/subst.exp: Delete default rules before further diff --git a/gdb/testsuite/gdb.arch/i386-avx.c b/gdb/testsuite/gdb.arch/i386-avx.c index bcfa18fb0e5..7fd12172c39 100644 --- a/gdb/testsuite/gdb.arch/i386-avx.c +++ b/gdb/testsuite/gdb.arch/i386-avx.c @@ -53,7 +53,7 @@ have_avx (void) { unsigned int eax, ebx, ecx, edx; - if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx)) + if (!i386_cpuid (1, &eax, &ebx, &ecx, &edx)) return 0; if ((ecx & (bit_AVX | bit_OSXSAVE)) == (bit_AVX | bit_OSXSAVE)) diff --git a/gdb/testsuite/gdb.arch/i386-avx.exp b/gdb/testsuite/gdb.arch/i386-avx.exp index 964806cfb4d..bbbc6f4ed4f 100644 --- a/gdb/testsuite/gdb.arch/i386-avx.exp +++ b/gdb/testsuite/gdb.arch/i386-avx.exp @@ -34,7 +34,7 @@ if [get_compiler_info] { set additional_flags "" if [test_compiler_info gcc*] { - set additional_flags "additional_flags=-mavx" + set additional_flags "additional_flags=-mavx -I${srcdir}/../common" } if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug $additional_flags]] != "" } { diff --git a/gdb/testsuite/gdb.arch/i386-sse.c b/gdb/testsuite/gdb.arch/i386-sse.c index d4315275265..8617c8ad36c 100644 --- a/gdb/testsuite/gdb.arch/i386-sse.c +++ b/gdb/testsuite/gdb.arch/i386-sse.c @@ -51,7 +51,10 @@ v4sf_t data[] = int have_sse (void) { - int edx = i386_cpuid (); + int edx; + + if (!i386_cpuid (1, NULL, NULL, NULL, &edx)) + return 0; if (edx & bit_SSE) return 1; diff --git a/gdb/testsuite/gdb.arch/i386-sse.exp b/gdb/testsuite/gdb.arch/i386-sse.exp index 5923ecae9a9..c62a3a0b86e 100644 --- a/gdb/testsuite/gdb.arch/i386-sse.exp +++ b/gdb/testsuite/gdb.arch/i386-sse.exp @@ -34,7 +34,7 @@ if [get_compiler_info] { set additional_flags "" if [test_compiler_info gcc*] { - set additional_flags "additional_flags=-msse" + set additional_flags "additional_flags=-msse -I${srcdir}/../common" } if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug $additional_flags]] != "" } { |