diff options
Diffstat (limited to 'gdb/gdbserver/i387-fp.c')
| -rw-r--r-- | gdb/gdbserver/i387-fp.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/gdb/gdbserver/i387-fp.c b/gdb/gdbserver/i387-fp.c index 2886519..1240b67 100644 --- a/gdb/gdbserver/i387-fp.c +++ b/gdb/gdbserver/i387-fp.c @@ -20,6 +20,9 @@ #include "i387-fp.h" #include "i386-xstate.h" +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. */ @@ -108,6 +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 @@ -271,6 +283,14 @@ 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. */ @@ -324,6 +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; @@ -531,6 +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); |