aa23aa5516
This patch add basic arch initialization and instruction associate
support for the csky CPU architecture.
E.g.:
$ perf annotate --stdio2
Samples: 161 of event 'cpu-clock:pppH', 4000 Hz, Event count (approx.):
40250000, [percent: local period]
test_4() /usr/lib/perf-test/callchain_test
Percent
Disassembly of section .text:
00008420 <test_4>:
test_4():
subi sp, sp, 4
st.w r8, (sp, 0x0)
mov r8, sp
subi sp, sp, 8
subi r3, r8, 4
movi r2, 0
st.w r2, (r3, 0x0)
↓ br 2e
100.00 14: subi r3, r8, 4
ld.w r2, (r3, 0x0)
subi r3, r8, 8
st.w r2, (r3, 0x0)
subi r3, r8, 4
ld.w r3, (r3, 0x0)
addi r2, r3, 1
subi r3, r8, 4
st.w r2, (r3, 0x0)
2e: subi r3, r8, 4
ld.w r2, (r3, 0x0)
lrw r3, 0x98967f // 8598 <main+0x28>
cmplt r3, r2
↑ bf 14
mov r0, r0
mov r0, r0
mov sp, r8
ld.w r8, (sp, 0x0)
addi sp, sp, 4
← rts
Signed-off-by: Mao Han <han_mao@c-sky.com>
Acked-by: Guo Ren <guoren@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-csky@vger.kernel.org
Link: http://lkml.kernel.org/r/d874d7782d9acdad5d98f2f5c4a6fb26fbe41c5d.1561531557.git.han_mao@c-sky.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd.
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#include <linux/compiler.h>
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static struct ins_ops *csky__associate_ins_ops(struct arch *arch,
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const char *name)
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{
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struct ins_ops *ops = NULL;
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/* catch all kind of jumps */
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if (!strcmp(name, "bt") ||
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!strcmp(name, "bf") ||
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!strcmp(name, "bez") ||
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!strcmp(name, "bnez") ||
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!strcmp(name, "bnezad") ||
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!strcmp(name, "bhsz") ||
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!strcmp(name, "bhz") ||
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!strcmp(name, "blsz") ||
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!strcmp(name, "blz") ||
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!strcmp(name, "br") ||
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!strcmp(name, "jmpi") ||
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!strcmp(name, "jmp"))
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ops = &jump_ops;
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/* catch function call */
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if (!strcmp(name, "bsr") ||
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!strcmp(name, "jsri") ||
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!strcmp(name, "jsr"))
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ops = &call_ops;
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/* catch function return */
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if (!strcmp(name, "rts"))
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ops = &ret_ops;
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if (ops)
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arch__associate_ins_ops(arch, name, ops);
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return ops;
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}
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static int csky__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
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{
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arch->initialized = true;
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arch->objdump.comment_char = '/';
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arch->associate_instruction_ops = csky__associate_ins_ops;
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return 0;
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}
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