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// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd.
// Mapping of DWARF debug register numbers into register names.
#include <errno.h>
#include <stddef.h>
#include <dwarf-regs.h>
// Ensure the V2 perf reg definitions are included.
#undef __CSKYABIV2__
#define __CSKYABIV2__ 1
#include "../../../arch/csky/include/uapi/asm/perf_regs.h"
#define CSKY_ABIV2_MAX_REGS 73
static const char * const csky_dwarf_regs_table_abiv2[CSKY_ABIV2_MAX_REGS] = {
/* r0 ~ r8 */
"%a0", "%a1", "%a2", "%a3", "%regs0", "%regs1", "%regs2", "%regs3",
/* r9 ~ r15 */
"%regs4", "%regs5", "%regs6", "%regs7", "%regs8", "%regs9", "%sp",
"%lr",
/* r16 ~ r23 */
"%exregs0", "%exregs1", "%exregs2", "%exregs3", "%exregs4",
"%exregs5", "%exregs6", "%exregs7",
/* r24 ~ r31 */
"%exregs8", "%exregs9", "%exregs10", "%exregs11", "%exregs12",
"%exregs13", "%exregs14", "%tls",
"%pc", NULL, NULL, NULL, "%hi", "%lo", NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
"%epc",
};
#define CSKY_ABIV1_MAX_REGS 57
static const char * const csky_dwarf_regs_table_abiv1[CSKY_ABIV1_MAX_REGS] = {
/* r0 ~ r8 */
"%sp", "%regs9", "%a0", "%a1", "%a2", "%a3", "%regs0", "%regs1",
/* r9 ~ r15 */
"%regs2", "%regs3", "%regs4", "%regs5", "%regs6", "%regs7", "%regs8",
"%lr",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
"%epc",
};
const char *__get_csky_regstr(unsigned int n, unsigned int flags)
{
if (flags & EF_CSKY_ABIV2)
return (n < CSKY_ABIV2_MAX_REGS) ? csky_dwarf_regs_table_abiv2[n] : NULL;
return (n < CSKY_ABIV1_MAX_REGS) ? csky_dwarf_regs_table_abiv1[n] : NULL;
}
static int __get_dwarf_regnum(const char *const *regstr, size_t num_regstr, const char *name)
{
for (size_t i = 0; i < num_regstr; i++) {
if (regstr[i] && !strcmp(regstr[i], name))
return i;
}
return -ENOENT;
}
int __get_csky_regnum(const char *name, unsigned int flags)
{
if (flags & EF_CSKY_ABIV2)
return __get_dwarf_regnum(csky_dwarf_regs_table_abiv2, CSKY_ABIV2_MAX_REGS, name);
return __get_dwarf_regnum(csky_dwarf_regs_table_abiv1, CSKY_ABIV1_MAX_REGS, name);
}
int __get_dwarf_regnum_for_perf_regnum_csky(int perf_regnum, unsigned int flags)
{
static const int dwarf_csky_regnums[][2] = {
[PERF_REG_CSKY_TLS] = {-ENOENT, 31},
[PERF_REG_CSKY_LR] = {15, 15},
[PERF_REG_CSKY_PC] = {-ENOENT, 32},
/* TODO: PERF_REG_CSKY_SR */
[PERF_REG_CSKY_SP] = {0, 14},
/* TODO: PERF_REG_CSKY_ORIG_A0 */
[PERF_REG_CSKY_A0] = {2, 0},
[PERF_REG_CSKY_A1] = {3, 1},
[PERF_REG_CSKY_A2] = {4, 2},
[PERF_REG_CSKY_A3] = {5, 3},
[PERF_REG_CSKY_REGS0] = {6, 4},
[PERF_REG_CSKY_REGS1] = {7, 5},
[PERF_REG_CSKY_REGS2] = {8, 6},
[PERF_REG_CSKY_REGS3] = {9, 7},
[PERF_REG_CSKY_REGS4] = {10, 8},
[PERF_REG_CSKY_REGS5] = {11, 9},
[PERF_REG_CSKY_REGS6] = {12, 10},
[PERF_REG_CSKY_REGS7] = {13, 11},
[PERF_REG_CSKY_REGS8] = {14, 12},
[PERF_REG_CSKY_REGS9] = {1, 13},
[PERF_REG_CSKY_EXREGS0] = {-ENOENT, 16},
[PERF_REG_CSKY_EXREGS1] = {-ENOENT, 17},
[PERF_REG_CSKY_EXREGS2] = {-ENOENT, 18},
[PERF_REG_CSKY_EXREGS3] = {-ENOENT, 19},
[PERF_REG_CSKY_EXREGS4] = {-ENOENT, 20},
[PERF_REG_CSKY_EXREGS5] = {-ENOENT, 21},
[PERF_REG_CSKY_EXREGS6] = {-ENOENT, 22},
[PERF_REG_CSKY_EXREGS7] = {-ENOENT, 23},
[PERF_REG_CSKY_EXREGS8] = {-ENOENT, 24},
[PERF_REG_CSKY_EXREGS9] = {-ENOENT, 25},
[PERF_REG_CSKY_EXREGS10] = {-ENOENT, 26},
[PERF_REG_CSKY_EXREGS11] = {-ENOENT, 27},
[PERF_REG_CSKY_EXREGS12] = {-ENOENT, 28},
[PERF_REG_CSKY_EXREGS13] = {-ENOENT, 29},
[PERF_REG_CSKY_EXREGS14] = {-ENOENT, 30},
/* TODO: PERF_REG_CSKY_HI */
/* TODO: PERF_REG_CSKY_LO */
/* TODO: PERF_REG_CSKY_DCSR */
};
int idx = 0;
if (flags & EF_CSKY_ABIV2)
idx++;
if (perf_regnum < 0 || perf_regnum > (int)ARRAY_SIZE(dwarf_csky_regnums) ||
dwarf_csky_regnums[perf_regnum][idx] == 0)
return -ENOENT;
return dwarf_csky_regnums[perf_regnum][idx];
}
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