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Unified Diff: gdb/gdbserver/i387-fp.c

Issue 124383005: GDB 7.6.50 (Closed) Base URL: http://git.chromium.org/native_client/nacl-gdb.git@upstream
Patch Set: Created 6 years, 11 months ago
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Index: gdb/gdbserver/i387-fp.c
diff --git a/gdb/gdbserver/i387-fp.c b/gdb/gdbserver/i387-fp.c
index 10e1bc119c8c04da020286c7234b2e8c50723265..1240b67f8bd427436adcd5ae47b9867dcb3f202a 100644
--- a/gdb/gdbserver/i387-fp.c
+++ b/gdb/gdbserver/i387-fp.c
@@ -1,6 +1,5 @@
/* i387-specific utility functions, for the remote server for GDB.
- Copyright (C) 2000-2002, 2005, 2007-2012 Free Software Foundation,
- Inc.
+ Copyright (C) 2000-2013 Free Software Foundation, Inc.
This file is part of GDB.
@@ -21,7 +20,8 @@
#include "i387-fp.h"
#include "i386-xstate.h"
-int num_xmm_registers = 8;
+static const int num_mpx_bnd_registers = 4;
+static const int num_mpx_cfg_registers = 2;
/* Note: These functions preserve the reserved bits in control registers.
However, gdbserver promptly throws away that information. */
@@ -111,6 +111,15 @@ struct i387_xsave {
/* Space for eight upper 128-bit YMM values, or 16 on x86-64. */
unsigned char ymmh_space[256];
+
+ unsigned char reserved4[128];
+
+ /* Space for 4 bound registers values of 128 bits. */
+ unsigned char mpx_bnd_space[64];
+
+ /* Space for 2 MPX configuration registers of 64 bits
+ plus reserved space. */
+ unsigned char mpx_cfg_space[16];
};
void
@@ -118,7 +127,7 @@ i387_cache_to_fsave (struct regcache *regcache, void *buf)
{
struct i387_fsave *fp = (struct i387_fsave *) buf;
int i;
- int st0_regnum = find_regno ("st0");
+ int st0_regnum = find_regno (regcache->tdesc, "st0");
unsigned long val, val2;
for (i = 0; i < 8; i++)
@@ -158,7 +167,7 @@ i387_fsave_to_cache (struct regcache *regcache, const void *buf)
{
struct i387_fsave *fp = (struct i387_fsave *) buf;
int i;
- int st0_regnum = find_regno ("st0");
+ int st0_regnum = find_regno (regcache->tdesc, "st0");
unsigned long val;
for (i = 0; i < 8; i++)
@@ -194,9 +203,11 @@ i387_cache_to_fxsave (struct regcache *regcache, void *buf)
{
struct i387_fxsave *fp = (struct i387_fxsave *) buf;
int i;
- int st0_regnum = find_regno ("st0");
- int xmm0_regnum = find_regno ("xmm0");
+ int st0_regnum = find_regno (regcache->tdesc, "st0");
+ int xmm0_regnum = find_regno (regcache->tdesc, "xmm0");
unsigned long val, val2;
+ /* Amd64 has 16 xmm regs; I386 has 8 xmm regs. */
+ int num_xmm_registers = register_size (regcache->tdesc, 0) == 8 ? 16 : 8;
for (i = 0; i < 8; i++)
collect_register (regcache, i + st0_regnum,
@@ -250,6 +261,8 @@ i387_cache_to_xsave (struct regcache *regcache, void *buf)
unsigned long long xstate_bv = 0;
char raw[16];
char *p;
+ /* Amd64 has 16 xmm regs; I386 has 8 xmm regs. */
+ int num_xmm_registers = register_size (regcache->tdesc, 0) == 8 ? 16 : 8;
/* The supported bits in `xstat_bv' are 1 byte. Clear part in
vector registers if its bit in xstat_bv is zero. */
@@ -270,12 +283,20 @@ i387_cache_to_xsave (struct regcache *regcache, void *buf)
if ((clear_bv & I386_XSTATE_AVX))
for (i = 0; i < num_xmm_registers; i++)
memset (((char *) &fp->ymmh_space[0]) + i * 16, 0, 16);
+
+ if ((clear_bv & I386_XSTATE_BNDREGS))
+ for (i = 0; i < num_mpx_bnd_registers; i++)
+ memset (((char *) &fp->mpx_bnd_space[0]) + i * 16, 0, 16);
+
+ if ((clear_bv & I386_XSTATE_BNDCFG))
+ for (i = 0; i < num_mpx_cfg_registers; i++)
+ memset (((char *) &fp->mpx_cfg_space[0]) + i * 8, 0, 8);
}
/* Check if any x87 registers are changed. */
if ((x86_xcr0 & I386_XSTATE_X87))
{
- int st0_regnum = find_regno ("st0");
+ int st0_regnum = find_regno (regcache->tdesc, "st0");
for (i = 0; i < 8; i++)
{
@@ -292,7 +313,7 @@ i387_cache_to_xsave (struct regcache *regcache, void *buf)
/* Check if any SSE registers are changed. */
if ((x86_xcr0 & I386_XSTATE_SSE))
{
- int xmm0_regnum = find_regno ("xmm0");
+ int xmm0_regnum = find_regno (regcache->tdesc, "xmm0");
for (i = 0; i < num_xmm_registers; i++)
{
@@ -309,7 +330,7 @@ i387_cache_to_xsave (struct regcache *regcache, void *buf)
/* Check if any AVX registers are changed. */
if ((x86_xcr0 & I386_XSTATE_AVX))
{
- int ymm0h_regnum = find_regno ("ymm0h");
+ int ymm0h_regnum = find_regno (regcache->tdesc, "ymm0h");
for (i = 0; i < num_xmm_registers; i++)
{
@@ -323,6 +344,40 @@ i387_cache_to_xsave (struct regcache *regcache, void *buf)
}
}
+ /* Check if any bound register has changed. */
+ if ((x86_xcr0 & I386_XSTATE_BNDREGS))
+ {
+ int bnd0r_regnum = find_regno (regcache->tdesc, "bnd0raw");
+
+ for (i = 0; i < num_mpx_bnd_registers; i++)
+ {
+ collect_register (regcache, i + bnd0r_regnum, raw);
+ p = ((char *) &fp->mpx_bnd_space[0]) + i * 16;
+ if (memcmp (raw, p, 16))
+ {
+ xstate_bv |= I386_XSTATE_BNDREGS;
+ memcpy (p, raw, 16);
+ }
+ }
+ }
+
+ /* Check if any status register has changed. */
+ if ((x86_xcr0 & I386_XSTATE_BNDCFG))
+ {
+ int bndcfg_regnum = find_regno (regcache->tdesc, "bndcfgu");
+
+ for (i = 0; i < num_mpx_cfg_registers; i++)
+ {
+ collect_register (regcache, i + bndcfg_regnum, raw);
+ p = ((char *) &fp->mpx_cfg_space[0]) + i * 8;
+ if (memcmp (raw, p, 8))
+ {
+ xstate_bv |= I386_XSTATE_BNDCFG;
+ memcpy (p, raw, 8);
+ }
+ }
+ }
+
/* Update the corresponding bits in xstate_bv if any SSE/AVX
registers are changed. */
fp->xstate_bv |= xstate_bv;
@@ -414,9 +469,11 @@ i387_fxsave_to_cache (struct regcache *regcache, const void *buf)
{
struct i387_fxsave *fp = (struct i387_fxsave *) buf;
int i, top;
- int st0_regnum = find_regno ("st0");
- int xmm0_regnum = find_regno ("xmm0");
+ int st0_regnum = find_regno (regcache->tdesc, "st0");
+ int xmm0_regnum = find_regno (regcache->tdesc, "xmm0");
unsigned long val;
+ /* Amd64 has 16 xmm regs; I386 has 8 xmm regs. */
+ int num_xmm_registers = register_size (regcache->tdesc, 0) == 8 ? 16 : 8;
for (i = 0; i < 8; i++)
supply_register (regcache, i + st0_regnum,
@@ -469,6 +526,8 @@ i387_xsave_to_cache (struct regcache *regcache, const void *buf)
unsigned long val;
unsigned int clear_bv;
gdb_byte *p;
+ /* Amd64 has 16 xmm regs; I386 has 8 xmm regs. */
+ int num_xmm_registers = register_size (regcache->tdesc, 0) == 8 ? 16 : 8;
/* The supported bits in `xstat_bv' are 1 byte. Clear part in
vector registers if its bit in xstat_bv is zero. */
@@ -477,7 +536,7 @@ i387_xsave_to_cache (struct regcache *regcache, const void *buf)
/* Check if any x87 registers are changed. */
if ((x86_xcr0 & I386_XSTATE_X87) != 0)
{
- int st0_regnum = find_regno ("st0");
+ int st0_regnum = find_regno (regcache->tdesc, "st0");
if ((clear_bv & I386_XSTATE_X87) != 0)
{
@@ -494,7 +553,7 @@ i387_xsave_to_cache (struct regcache *regcache, const void *buf)
if ((x86_xcr0 & I386_XSTATE_SSE) != 0)
{
- int xmm0_regnum = find_regno ("xmm0");
+ int xmm0_regnum = find_regno (regcache->tdesc, "xmm0");
if ((clear_bv & I386_XSTATE_SSE))
{
@@ -511,7 +570,7 @@ i387_xsave_to_cache (struct regcache *regcache, const void *buf)
if ((x86_xcr0 & I386_XSTATE_AVX) != 0)
{
- int ymm0h_regnum = find_regno ("ymm0h");
+ int ymm0h_regnum = find_regno (regcache->tdesc, "ymm0h");
if ((clear_bv & I386_XSTATE_AVX) != 0)
{
@@ -526,6 +585,42 @@ i387_xsave_to_cache (struct regcache *regcache, const void *buf)
}
}
+ if ((x86_xcr0 & I386_XSTATE_BNDREGS))
+ {
+ int bnd0r_regnum = find_regno (regcache->tdesc, "bnd0raw");
+
+
+ if ((clear_bv & I386_XSTATE_BNDREGS) != 0)
+ {
+ for (i = 0; i < num_mpx_bnd_registers; i++)
+ supply_register_zeroed (regcache, i + bnd0r_regnum);
+ }
+ else
+ {
+ p = (gdb_byte *) &fp->mpx_bnd_space[0];
+ for (i = 0; i < num_mpx_bnd_registers; i++)
+ supply_register (regcache, i + bnd0r_regnum, p + i * 16);
+ }
+
+ }
+
+ if ((x86_xcr0 & I386_XSTATE_BNDCFG))
+ {
+ int bndcfg_regnum = find_regno (regcache->tdesc, "bndcfgu");
+
+ if ((clear_bv & I386_XSTATE_BNDCFG) != 0)
+ {
+ for (i = 0; i < num_mpx_cfg_registers; i++)
+ supply_register_zeroed (regcache, i + bndcfg_regnum);
+ }
+ else
+ {
+ p = (gdb_byte *) &fp->mpx_cfg_space[0];
+ for (i = 0; i < num_mpx_cfg_registers; i++)
+ supply_register (regcache, i + bndcfg_regnum, p + i * 8);
+ }
+ }
+
supply_register_by_name (regcache, "fioff", &fp->fioff);
supply_register_by_name (regcache, "fooff", &fp->fooff);
supply_register_by_name (regcache, "mxcsr", &fp->mxcsr);
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