0ab4188664
E.g.: $ perf annotate --stdio2 Samples: 7K of event 'cycles:ppp', 4000 Hz, Event count (approx.): 3086733887 __gettimeofday /lib32/libc-2.27.so [Percent: local period] Percent│ │ │ │ Disassembly of section .text: │ │ 000a6fa0 <__gettimeofday@@GLIBC_2.0>: 0.47 │ save %sp, -96, %sp 0.73 │ sethi %hi(0xe9000), %l7 │ → call __frame_state_for@@GLIBC_2.0+0x480 0.30 │ add %l7, 0x58, %l7 ! e9058 <nftw64@@GLIBC_2.3.3+0x818> 1.33 │ mov %i0, %o0 │ mov %i1, %o1 0.43 │ mov 0x74, %g1 │ ta 0x10 88.92 │ ↓ bcc 30 2.95 │ clr %g1 │ neg %o0 │ mov 1, %g1 0.31 │30: cmp %g1, 0 │ bne,pn %icc, a6fe4 <__gettimeofday@@GLIBC_2.0+0x44> │ mov %o0, %i0 1.96 │ ← return %i7 + 8 2.62 │ nop │ sethi %hi(0), %g1 │ neg %o0, %g2 │ add %g1, 0x160, %g1 │ ld [ %l7 + %g1 ], %g1 │ st %g2, [ %g7 + %g1 ] │ ← return %i7 + 8 │ mov -1, %o0 Signed-off-by: David S. Miller <davem@davemloft.net> Link: http://lkml.kernel.org/r/20181016.205555.1070918198627611771.davem@davemloft.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
170 lines
3.6 KiB
C
170 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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static int is_branch_cond(const char *cond)
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{
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if (cond[0] == '\0')
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return 1;
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if (cond[0] == 'a' && cond[1] == '\0')
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return 1;
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if (cond[0] == 'c' &&
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(cond[1] == 'c' || cond[1] == 's') &&
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cond[2] == '\0')
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return 1;
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if (cond[0] == 'e' &&
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(cond[1] == '\0' ||
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(cond[1] == 'q' && cond[2] == '\0')))
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return 1;
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if (cond[0] == 'g' &&
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(cond[1] == '\0' ||
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(cond[1] == 't' && cond[2] == '\0') ||
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(cond[1] == 'e' && cond[2] == '\0') ||
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(cond[1] == 'e' && cond[2] == 'u' && cond[3] == '\0')))
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return 1;
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if (cond[0] == 'l' &&
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(cond[1] == '\0' ||
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(cond[1] == 't' && cond[2] == '\0') ||
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(cond[1] == 'u' && cond[2] == '\0') ||
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(cond[1] == 'e' && cond[2] == '\0') ||
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(cond[1] == 'e' && cond[2] == 'u' && cond[3] == '\0')))
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return 1;
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if (cond[0] == 'n' &&
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(cond[1] == '\0' ||
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(cond[1] == 'e' && cond[2] == '\0') ||
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(cond[1] == 'z' && cond[2] == '\0') ||
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(cond[1] == 'e' && cond[2] == 'g' && cond[3] == '\0')))
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return 1;
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if (cond[0] == 'b' &&
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cond[1] == 'p' &&
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cond[2] == 'o' &&
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cond[3] == 's' &&
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cond[4] == '\0')
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return 1;
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if (cond[0] == 'v' &&
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(cond[1] == 'c' || cond[1] == 's') &&
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cond[2] == '\0')
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return 1;
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if (cond[0] == 'b' &&
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cond[1] == 'z' &&
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cond[2] == '\0')
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return 1;
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return 0;
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}
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static int is_branch_reg_cond(const char *cond)
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{
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if ((cond[0] == 'n' || cond[0] == 'l') &&
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cond[1] == 'z' &&
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cond[2] == '\0')
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return 1;
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if (cond[0] == 'z' &&
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cond[1] == '\0')
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return 1;
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if ((cond[0] == 'g' || cond[0] == 'l') &&
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cond[1] == 'e' &&
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cond[2] == 'z' &&
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cond[3] == '\0')
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return 1;
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if (cond[0] == 'g' &&
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cond[1] == 'z' &&
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cond[2] == '\0')
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return 1;
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return 0;
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}
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static int is_branch_float_cond(const char *cond)
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{
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if (cond[0] == '\0')
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return 1;
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if ((cond[0] == 'a' || cond[0] == 'e' ||
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cond[0] == 'z' || cond[0] == 'g' ||
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cond[0] == 'l' || cond[0] == 'n' ||
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cond[0] == 'o' || cond[0] == 'u') &&
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cond[1] == '\0')
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return 1;
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if (((cond[0] == 'g' && cond[1] == 'e') ||
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(cond[0] == 'l' && (cond[1] == 'e' ||
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cond[1] == 'g')) ||
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(cond[0] == 'n' && (cond[1] == 'e' ||
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cond[1] == 'z')) ||
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(cond[0] == 'u' && (cond[1] == 'e' ||
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cond[1] == 'g' ||
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cond[1] == 'l'))) &&
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cond[2] == '\0')
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return 1;
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if (cond[0] == 'u' &&
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(cond[1] == 'g' || cond[1] == 'l') &&
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cond[2] == 'e' &&
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cond[3] == '\0')
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return 1;
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return 0;
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}
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static struct ins_ops *sparc__associate_instruction_ops(struct arch *arch, const char *name)
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{
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struct ins_ops *ops = NULL;
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if (!strcmp(name, "call") ||
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!strcmp(name, "jmp") ||
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!strcmp(name, "jmpl")) {
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ops = &call_ops;
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} else if (!strcmp(name, "ret") ||
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!strcmp(name, "retl") ||
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!strcmp(name, "return")) {
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ops = &ret_ops;
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} else if (!strcmp(name, "mov")) {
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ops = &mov_ops;
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} else {
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if (name[0] == 'c' &&
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(name[1] == 'w' || name[1] == 'x'))
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name += 2;
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if (name[0] == 'b') {
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const char *cond = name + 1;
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if (cond[0] == 'r') {
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if (is_branch_reg_cond(cond + 1))
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ops = &jump_ops;
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} else if (is_branch_cond(cond)) {
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ops = &jump_ops;
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}
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} else if (name[0] == 'f' && name[1] == 'b') {
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if (is_branch_float_cond(name + 2))
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ops = &jump_ops;
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}
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}
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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 sparc__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
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{
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if (!arch->initialized) {
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arch->initialized = true;
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arch->associate_instruction_ops = sparc__associate_instruction_ops;
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arch->objdump.comment_char = '#';
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}
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return 0;
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}
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