espressif/binutils-gdb
1
0
Fork 0
mirror of https://github.com/espressif/binutils-gdb.git synced 2025-06-18 08:38:10 +08:00
Code Issues Packages Projects Releases Wiki Activity

arm-fbsd: Use a static regset for the TLS register set.

Browse Source 
This uses custom collect/supply regset handlers which pass the TLS
register number from the gdbarch_tdep as the base register number.

Approved-By: Simon Marchi <simon.marchi@efficios.com>
This commit is contained in:
John Baldwin
2022-11-22 14:21:13 -08:00
parent a141d32c6e
commit 759bbcb917
3 changed files with 43 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
gdb/arm-fbsd-nat.c
View File

@ -58,21 +58,8 @@ arm_fbsd_nat_target::fetch_registers (struct regcache *regcache, int regnum)
arm_gdbarch_tdep *tdep = gdbarch_tdep<arm_gdbarch_tdep> (gdbarch);
if (tdep->tls_regnum > 0)
{
const struct regcache_map_entry arm_fbsd_tlsregmap[] =
{
{ 1, tdep->tls_regnum, 4 },
{ 0 }
};
const struct regset arm_fbsd_tlsregset =
{
arm_fbsd_tlsregmap,
regcache_supply_regset, regcache_collect_regset
};
fetch_regset<uint32_t> (regcache, regnum, NT_ARM_TLS, &arm_fbsd_tlsregset);
}
fetch_regset<uint32_t> (regcache, regnum, NT_ARM_TLS, &arm_fbsd_tls_regset,
tdep->tls_regnum);
#endif
}
@ -93,21 +80,8 @@ arm_fbsd_nat_target::store_registers (struct regcache *regcache, int regnum)
arm_gdbarch_tdep *tdep = gdbarch_tdep<arm_gdbarch_tdep> (gdbarch);
if (tdep->tls_regnum > 0)
{
const struct regcache_map_entry arm_fbsd_tlsregmap[] =
{
{ 1, tdep->tls_regnum, 4 },
{ 0 }
};
const struct regset arm_fbsd_tlsregset =
{
arm_fbsd_tlsregmap,
regcache_supply_regset, regcache_collect_regset
};
store_regset<uint32_t> (regcache, regnum, NT_ARM_TLS, &arm_fbsd_tlsregset);
}
store_regset<uint32_t> (regcache, regnum, NT_ARM_TLS, &arm_fbsd_tls_regset,
tdep->tls_regnum);
#endif
}

54
gdb/arm-fbsd-tdep.c
View File

@ -52,6 +52,14 @@ static const struct regcache_map_entry arm_fbsd_vfpregmap[] =
{ 0 }
};
/* Register numbers are relative to tdep->tls_regnum. */
static const struct regcache_map_entry arm_fbsd_tls_regmap[] =
{
{ 1, 0, 4 }, /* tpidruro */
{ 0 }
};
/* In a signal frame, sp points to a 'struct sigframe' which is
defined as:
@ -151,6 +159,34 @@ const struct regset arm_fbsd_vfpregset =
regcache_supply_regset, regcache_collect_regset
};
static void
arm_fbsd_supply_tls_regset (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *buf, size_t size)
{
struct gdbarch *gdbarch = regcache->arch ();
arm_gdbarch_tdep *tdep = gdbarch_tdep<arm_gdbarch_tdep> (gdbarch);
regcache->supply_regset (regset, tdep->tls_regnum, regnum, buf, size);
}
static void
arm_fbsd_collect_tls_regset (const struct regset *regset,
const struct regcache *regcache,
int regnum, void *buf, size_t size)
{
struct gdbarch *gdbarch = regcache->arch ();
arm_gdbarch_tdep *tdep = gdbarch_tdep<arm_gdbarch_tdep> (gdbarch);
regcache->collect_regset (regset, tdep->tls_regnum, regnum, buf, size);
}
const struct regset arm_fbsd_tls_regset =
{
arm_fbsd_tls_regmap,
arm_fbsd_supply_tls_regset, arm_fbsd_collect_tls_regset
};
/* Implement the "iterate_over_regset_sections" gdbarch method. */
static void
@ -165,22 +201,8 @@ arm_fbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
&arm_fbsd_gregset, NULL, cb_data);
if (tdep->tls_regnum > 0)
{
const struct regcache_map_entry arm_fbsd_tlsregmap[] =
{
{ 1, tdep->tls_regnum, 4 },
{ 0 }
};
const struct regset arm_fbsd_tlsregset =
{
arm_fbsd_tlsregmap,
regcache_supply_regset, regcache_collect_regset
};
cb (".reg-aarch-tls", ARM_FBSD_SIZEOF_TLSREGSET, ARM_FBSD_SIZEOF_TLSREGSET,
&arm_fbsd_tlsregset, NULL, cb_data);
}
cb (".reg-aarch-tls", ARM_FBSD_SIZEOF_TLSREGSET, ARM_FBSD_SIZEOF_TLSREGSET,
&arm_fbsd_tls_regset, NULL, cb_data);
/* While FreeBSD/arm cores do contain a NT_FPREGSET / ".reg2"
register set, it is not populated with register values by the

1
gdb/arm-fbsd-tdep.h
View File

@ -35,6 +35,7 @@
extern const struct regset arm_fbsd_gregset;
extern const struct regset arm_fbsd_vfpregset;
extern const struct regset arm_fbsd_tls_regset;
/* Flags passed in AT_HWCAP. */
#define HWCAP_VFP 0x00000040