From a196ebeb91d1149b1615faaeafc31d72a28ba98e Mon Sep 17 00:00:00 2001 From: Walfred Tedeschi Date: Thu, 10 Oct 2013 07:12:49 +0000 Subject: Add MPX support to gdbserver. 2013-05-22 Walfred Tedeschi gdbserver/ * Makefile.in: Add i386-mpx.c, i386-mpx-linux.c, amd64-mpx.c, amd64-mpx-linux.c, x32-mpx.c and x32-mpx-linux.c generation. * configure.srv (srv_i386_regobj): Add i386-mpx.o. (srv_i386_linux_regobj): Add i386-mpx-linux.o. (srv_amd64_regobj): Add amd64-mpx.o. (srv_amd64_linux_regobj): Add amd64-mpx-linux.o. (srv_i386_32bit_xmlfiles): Add i386/32bit-mpx.xml. (srv_i386_64bit_xmlfiles): Add i386/64bit-mpx.xml. * i387-fp.c (num_pl_bnd_register) Added constant. (num_pl_bnd_cfg_registers) Added constant. (struct i387_xsave) Added reserved area and MPX fields. (i387_cache_to_xsave, i387_xsave_to_cache) Add MPX. * linux-x86-low.c (init_registers_i386_mpx_linux): Declare new function. (tdesc_i386_mpx_linux): Add MPX amd64 target. (init_registers_amd64_mpx_linux): Declare new function. (tdesc_amd64_mpx_linux): Add MPX amd64 target. (x86_64_regmap): Add MPX registers. (x86_linux_read_description): Add MPX case. (initialize_low_arch): Initialize MPX targets. Change-Id: I394d81afa76d11375ce792cefad0ceb9825fb379 Signed-off-by: Walfred Tedeschi --- gdb/gdbserver/linux-x86-low.c | 80 ++++++++++++++++++++++++++++++++++--------- 1 file changed, 64 insertions(+), 16 deletions(-) (limited to 'gdb/gdbserver/linux-x86-low.c') diff --git a/gdb/gdbserver/linux-x86-low.c b/gdb/gdbserver/linux-x86-low.c index cf61872..e8505bf 100644 --- a/gdb/gdbserver/linux-x86-low.c +++ b/gdb/gdbserver/linux-x86-low.c @@ -43,6 +43,10 @@ extern const struct target_desc *tdesc_amd64_linux; void init_registers_amd64_avx_linux (void); extern const struct target_desc *tdesc_amd64_avx_linux; +/* Defined in auto-generated file amd64-mpx-linux.c. */ +void init_registers_amd64_mpx_linux (void); +extern const struct target_desc *tdesc_amd64_mpx_linux; + /* Defined in auto-generated file x32-linux.c. */ void init_registers_x32_linux (void); extern const struct target_desc *tdesc_x32_linux; @@ -50,6 +54,7 @@ extern const struct target_desc *tdesc_x32_linux; /* Defined in auto-generated file x32-avx-linux.c. */ void init_registers_x32_avx_linux (void); extern const struct target_desc *tdesc_x32_avx_linux; + #endif /* Defined in auto-generated file i386-linux.c. */ @@ -64,6 +69,10 @@ extern const struct target_desc *tdesc_i386_mmx_linux; void init_registers_i386_avx_linux (void); extern const struct target_desc *tdesc_i386_avx_linux; +/* Defined in auto-generated file i386-mpx-linux.c. */ +void init_registers_i386_mpx_linux (void); +extern const struct target_desc *tdesc_i386_mpx_linux; + #ifdef __x86_64__ static struct target_desc *tdesc_amd64_linux_no_xml; #endif @@ -163,8 +172,11 @@ static const int x86_64_regmap[] = -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, -1, - ORIG_RAX * 8 + -1, + -1, -1, -1, -1, -1, -1, -1, -1, + ORIG_RAX * 8, + -1, -1, -1, -1, /* MPX registers BND0 ... BND3. */ + -1, -1 /* MPX registers BNDCFGU, BNDSTATUS. */ }; #define X86_64_NUM_REGS (sizeof (x86_64_regmap) / sizeof (x86_64_regmap[0])) @@ -1233,7 +1245,7 @@ x86_linux_read_description (void) { unsigned int machine; int is_elf64; - int avx; + int xcr0_features; int tid; static uint64_t xcr0; struct regset_info *regset; @@ -1312,36 +1324,69 @@ x86_linux_read_description (void) } /* Check the native XCR0 only if PTRACE_GETREGSET is available. */ - avx = (have_ptrace_getregset - && (xcr0 & I386_XSTATE_AVX_MASK) == I386_XSTATE_AVX_MASK); + xcr0_features = (have_ptrace_getregset + && (xcr0 & I386_XSTATE_ALL_MASK)); - /* AVX is the highest feature we support. */ - if (avx) + if (xcr0_features) x86_xcr0 = xcr0; if (machine == EM_X86_64) { #ifdef __x86_64__ - if (avx) + if (is_elf64) { - if (!is_elf64) - return tdesc_x32_avx_linux; + if (xcr0_features) + { + switch (xcr0 & I386_XSTATE_ALL_MASK) + { + case I386_XSTATE_MPX_MASK: + return tdesc_amd64_mpx_linux; + + case I386_XSTATE_AVX_MASK: + return tdesc_amd64_avx_linux; + + default: + return tdesc_amd64_linux; + } + } else - return tdesc_amd64_avx_linux; + return tdesc_amd64_linux; } else { - if (!is_elf64) - return tdesc_x32_linux; + if (xcr0_features) + { + switch (xcr0 & I386_XSTATE_ALL_MASK) + { + case I386_XSTATE_MPX_MASK: /* No MPX on x32. */ + case I386_XSTATE_AVX_MASK: + return tdesc_x32_avx_linux; + + default: + return tdesc_x32_linux; + } + } else - return tdesc_amd64_linux; + return tdesc_x32_linux; } #endif } else { - if (avx) - return tdesc_i386_avx_linux; + if (xcr0_features) + { + switch (xcr0 & I386_XSTATE_ALL_MASK) + { + case (I386_XSTATE_MPX_MASK): + return tdesc_i386_mpx_linux; + + case (I386_XSTATE_AVX_MASK): + return tdesc_i386_avx_linux; + + default: + return tdesc_i386_linux; + } + } else return tdesc_i386_linux; } @@ -3338,6 +3383,8 @@ initialize_low_arch (void) #ifdef __x86_64__ init_registers_amd64_linux (); init_registers_amd64_avx_linux (); + init_registers_amd64_mpx_linux (); + init_registers_x32_linux (); init_registers_x32_avx_linux (); @@ -3348,6 +3395,7 @@ initialize_low_arch (void) init_registers_i386_linux (); init_registers_i386_mmx_linux (); init_registers_i386_avx_linux (); + init_registers_i386_mpx_linux (); tdesc_i386_linux_no_xml = xmalloc (sizeof (struct target_desc)); copy_target_description (tdesc_i386_linux_no_xml, tdesc_i386_linux); -- cgit v1.1