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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/xtensa-linux-nat.c | |
| 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/xtensa-linux-nat.c')
| -rw-r--r-- | gdb/xtensa-linux-nat.c | 28 |
1 files changed, 28 insertions, 0 deletions
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 |