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| author | Max Filippov <jcmvbkbc@gmail.com> | 2016-11-18 09:48:01 -0800 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2017-03-27 12:58:52 -0700 |
| commit | 0ce4291e3ffd90d2b94e02b4557d716c043bf02e (patch) | |
| tree | c91df410cdd5c4d61f05a7b0286ed86ca6462f02 /gdb | |
| parent | c56054f9a80e157e3d2d5109821abd191b68f0ea (diff) | |
| download | gdb-0ce4291e3ffd90d2b94e02b4557d716c043bf02e.zip gdb-0ce4291e3ffd90d2b94e02b4557d716c043bf02e.tar.gz gdb-0ce4291e3ffd90d2b94e02b4557d716c043bf02e.tar.bz2 | |
gdb: xtensa-linux: add call0 support
Correctly handle a0- registers. This allows debugging call0 code in
linux natively.
The register structure is the same for windowed and call0 ABIs because
currently linux kernel internally requires windowed registers, so they are
always present.
gdb/
2017-03-27 Max Filippov <jcmvbkbc@gmail.com>
* xtensa-linux-nat.c (fill_gregset): Call regcache_raw_collect
for a single specified register or for all registers in
a0_base..a0_base + C0_NREGS range.
(supply_gregset_reg): Call regcache_raw_supply for a single
specified register or for all registers in a0_base..a0_base +
C0_NREGS range.
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 9 | ||||
| -rw-r--r-- | gdb/xtensa-linux-nat.c | 28 |
2 files changed, 37 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 5687fad..2faf489 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,14 @@ 2017-03-27 Max Filippov <jcmvbkbc@gmail.com> + * xtensa-linux-nat.c (fill_gregset): Call regcache_raw_collect + for a single specified register or for all registers in + a0_base..a0_base + C0_NREGS range. + (supply_gregset_reg): Call regcache_raw_supply for a single + specified register or for all registers in a0_base..a0_base + + C0_NREGS range. + +2017-03-27 Max Filippov <jcmvbkbc@gmail.com> + * arch/xtensa.h (C0_NREGS): Add definition. * xtensa-tdep.c (C0_NREGS): Remove definition. diff --git a/gdb/xtensa-linux-nat.c b/gdb/xtensa-linux-nat.c index 69c7eef..a4b001e 100644 --- a/gdb/xtensa-linux-nat.c +++ b/gdb/xtensa-linux-nat.c @@ -94,6 +94,20 @@ fill_gregset (const struct regcache *regcache, gdbarch_tdep (gdbarch)->ar_base + i, ®s->ar[i]); } + if (regnum >= gdbarch_tdep (gdbarch)->a0_base + && regnum < gdbarch_tdep (gdbarch)->a0_base + C0_NREGS) + regcache_raw_collect (regcache, regnum, + ®s->ar[(4 * regs->windowbase + regnum + - gdbarch_tdep (gdbarch)->a0_base) + % gdbarch_tdep (gdbarch)->num_aregs]); + else if (regnum == -1) + { + for (i = 0; i < C0_NREGS; ++i) + regcache_raw_collect (regcache, + gdbarch_tdep (gdbarch)->a0_base + i, + ®s->ar[(4 * regs->windowbase + i) + % gdbarch_tdep (gdbarch)->num_aregs]); + } } static void @@ -146,6 +160,20 @@ supply_gregset_reg (struct regcache *regcache, gdbarch_tdep (gdbarch)->ar_base + i, ®s->ar[i]); } + if (regnum >= gdbarch_tdep (gdbarch)->a0_base + && regnum < gdbarch_tdep (gdbarch)->a0_base + C0_NREGS) + regcache_raw_supply (regcache, regnum, + ®s->ar[(4 * regs->windowbase + regnum + - gdbarch_tdep (gdbarch)->a0_base) + % gdbarch_tdep (gdbarch)->num_aregs]); + else if (regnum == -1) + { + for (i = 0; i < C0_NREGS; ++i) + regcache_raw_supply (regcache, + gdbarch_tdep (gdbarch)->a0_base + i, + ®s->ar[(4 * regs->windowbase + i) + % gdbarch_tdep (gdbarch)->num_aregs]); + } } void |