perf annotate: Add riscv64 support

This patch adds basic arch initialization and instruction associate
support for the riscv64 CPU architecture.

Example output:

  $ perf annotate --stdio2
  Samples: 122K of event 'task-clock:u', 4000 Hz, Event count (approx.): 30637250000, [percent: local period]
  strcmp() /usr/lib64/libc-2.32.so
  Percent

	      Disassembly of section .text:

	      0000000000069a30 <strcmp>:
	      __GI_strcmp():
	      const unsigned char *s2 = (const unsigned char *) p2;
	      unsigned char c1, c2;

	      do
	      {
	      c1 = (unsigned char) *s1++;
   37.30        lbu  a5,0(a0)
	      c2 = (unsigned char) *s2++;
    1.23        addi a1,a1,1
	      c1 = (unsigned char) *s1++;
   18.68        addi a0,a0,1
	      c2 = (unsigned char) *s2++;
    1.37        lbu  a4,-1(a1)
	      if (c1 == '\0')
   18.71      ↓ beqz a5,18
	       return c1 - c2;
	       }

Signed-off-by: William Cohen <[email protected]>
Cc: Albert Ou <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Palmer Dabbelt <[email protected]>
Cc: Paul Walmsley <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: [email protected]
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

0 files changed, 0 insertions, 0 deletions