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gdb/x86: Implement ax_pseudo_register_collect hook.

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Makes "collect $ymm15" action work.

gdb/ChangeLog:

	* amd64-tdep.c (amd64_ax_pseudo_register_collect): New function.
	(amd64_init_abi): Fill ax_pseudo_register_collect hook.
	* gdb/i386-tdep.c (i386_pseudo_register_read_into_value): Remove
	misleading comment.
	(i386_pseudo_register_write): Ditto.
	(i386_ax_pseudo_register_collect): New function.
	(i386_gdbarch_init): Fill ax_pseudo_register_collect hook.
	* i386-tdep.h: Add i386_ax_pseudo_register_collect prototype.
This commit is contained in:
Marcin Kościelnicki 2016-02-06 18:17:07 +01:00
parent e909d859f5
commit 62e5fd57bc
4 changed files with 130 additions and 6 deletions
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11
gdb/ChangeLog
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@ -1,3 +1,14 @@
2016-02-10 Marcin Kościelnicki <koriakin@0x04.net>
* amd64-tdep.c (amd64_ax_pseudo_register_collect): New function.
(amd64_init_abi): Fill ax_pseudo_register_collect hook.
* gdb/i386-tdep.c (i386_pseudo_register_read_into_value): Remove
misleading comment.
(i386_pseudo_register_write): Ditto.
(i386_ax_pseudo_register_collect): New function.
(i386_gdbarch_init): Fill ax_pseudo_register_collect hook.
* i386-tdep.h: Add i386_ax_pseudo_register_collect prototype.
2016-02-10 Marcin Kościelnicki <koriakin@0x04.net>
* tracefile-tfile.c (tfile_fetch_registers): Use g packet order

31
gdb/amd64-tdep.c
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@ -455,6 +455,35 @@ amd64_pseudo_register_write (struct gdbarch *gdbarch,
i386_pseudo_register_write (gdbarch, regcache, regnum, buf);
}
/* Implement the 'ax_pseudo_register_collect' gdbarch method. */
static int
amd64_ax_pseudo_register_collect (struct gdbarch *gdbarch,
struct agent_expr *ax, int regnum)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
if (i386_byte_regnum_p (gdbarch, regnum))
{
int gpnum = regnum - tdep->al_regnum;
if (gpnum >= AMD64_NUM_LOWER_BYTE_REGS)
ax_reg_mask (ax, gpnum - AMD64_NUM_LOWER_BYTE_REGS);
else
ax_reg_mask (ax, gpnum);
return 0;
}
else if (i386_dword_regnum_p (gdbarch, regnum))
{
int gpnum = regnum - tdep->eax_regnum;
ax_reg_mask (ax, gpnum);
return 0;
}
else
return i386_ax_pseudo_register_collect (gdbarch, ax, regnum);
}
/* Register classes as defined in the psABI. */
@ -2997,6 +3026,8 @@ amd64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
amd64_pseudo_register_read_value);
set_gdbarch_pseudo_register_write (gdbarch,
amd64_pseudo_register_write);
set_gdbarch_ax_pseudo_register_collect (gdbarch,
amd64_ax_pseudo_register_collect);
set_tdesc_pseudo_register_name (gdbarch, amd64_pseudo_register_name);

90
gdb/i386-tdep.c
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@ -3419,9 +3419,6 @@ i386_pseudo_register_read_into_value (struct gdbarch *gdbarch,
}
else if (i386_byte_regnum_p (gdbarch, regnum))
{
/* Check byte pseudo registers last since this function will
be called from amd64_pseudo_register_read, which handles
byte pseudo registers differently. */
int gpnum = regnum - tdep->al_regnum;
/* Extract (always little endian). We read both lower and
@ -3584,9 +3581,6 @@ i386_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
}
else if (i386_byte_regnum_p (gdbarch, regnum))
{
/* Check byte pseudo registers last since this function will
be called from amd64_pseudo_register_read, which handles
byte pseudo registers differently. */
int gpnum = regnum - tdep->al_regnum;
/* Read ... We read both lower and upper registers. */
@ -3603,6 +3597,88 @@ i386_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
internal_error (__FILE__, __LINE__, _("invalid regnum"));
}
}
/* Implement the 'ax_pseudo_register_collect' gdbarch method. */
int
i386_ax_pseudo_register_collect (struct gdbarch *gdbarch,
struct agent_expr *ax, int regnum)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
if (i386_mmx_regnum_p (gdbarch, regnum))
{
/* MMX to FPU register mapping depends on current TOS. Let's just
not care and collect everything... */
int i;
ax_reg_mask (ax, I387_FSTAT_REGNUM (tdep));
for (i = 0; i < 8; i++)
ax_reg_mask (ax, I387_ST0_REGNUM (tdep) + i);
return 0;
}
else if (i386_bnd_regnum_p (gdbarch, regnum))
{
regnum -= tdep->bnd0_regnum;
ax_reg_mask (ax, I387_BND0R_REGNUM (tdep) + regnum);
return 0;
}
else if (i386_k_regnum_p (gdbarch, regnum))
{
regnum -= tdep->k0_regnum;
ax_reg_mask (ax, tdep->k0_regnum + regnum);
return 0;
}
else if (i386_zmm_regnum_p (gdbarch, regnum))
{
regnum -= tdep->zmm0_regnum;
if (regnum < num_lower_zmm_regs)
{
ax_reg_mask (ax, I387_XMM0_REGNUM (tdep) + regnum);
ax_reg_mask (ax, tdep->ymm0h_regnum + regnum);
}
else
{
ax_reg_mask (ax, I387_XMM16_REGNUM (tdep) + regnum
- num_lower_zmm_regs);
ax_reg_mask (ax, I387_YMM16H_REGNUM (tdep) + regnum
- num_lower_zmm_regs);
}
ax_reg_mask (ax, tdep->zmm0h_regnum + regnum);
return 0;
}
else if (i386_ymm_regnum_p (gdbarch, regnum))
{
regnum -= tdep->ymm0_regnum;
ax_reg_mask (ax, I387_XMM0_REGNUM (tdep) + regnum);
ax_reg_mask (ax, tdep->ymm0h_regnum + regnum);
return 0;
}
else if (i386_ymm_avx512_regnum_p (gdbarch, regnum))
{
regnum -= tdep->ymm16_regnum;
ax_reg_mask (ax, I387_XMM16_REGNUM (tdep) + regnum);
ax_reg_mask (ax, tdep->ymm16h_regnum + regnum);
return 0;
}
else if (i386_word_regnum_p (gdbarch, regnum))
{
int gpnum = regnum - tdep->ax_regnum;
ax_reg_mask (ax, gpnum);
return 0;
}
else if (i386_byte_regnum_p (gdbarch, regnum))
{
int gpnum = regnum - tdep->al_regnum;
ax_reg_mask (ax, gpnum % 4);
return 0;
}
else
internal_error (__FILE__, __LINE__, _("invalid regnum"));
return 1;
}
/* Return the register number of the register allocated by GCC after
@ -8423,6 +8499,8 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_pseudo_register_read_value (gdbarch,
i386_pseudo_register_read_value);
set_gdbarch_pseudo_register_write (gdbarch, i386_pseudo_register_write);
set_gdbarch_ax_pseudo_register_collect (gdbarch,
i386_ax_pseudo_register_collect);
set_tdesc_pseudo_register_type (gdbarch, i386_pseudo_register_type);
set_tdesc_pseudo_register_name (gdbarch, i386_pseudo_register_name);

4
gdb/i386-tdep.h
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@ -360,6 +360,10 @@ extern void i386_pseudo_register_write (struct gdbarch *gdbarch,
struct regcache *regcache,
int regnum, const gdb_byte *buf);
extern int i386_ax_pseudo_register_collect (struct gdbarch *gdbarch,
struct agent_expr *ax,
int regnum);
/* Segment selectors. */
#define I386_SEL_RPL 0x0003 /* Requester's Privilege Level mask. */
#define I386_SEL_UPL 0x0003 /* User Privilige Level. */