Quelle  rseq-or1k-bits.h   Sprache: C

/* SPDX-License-Identifier: LGPL-2.1 OR MIT */

#include "rseq-bits-template.h"

#if defined(RSEQ_TEMPLATE_MO_RELAXED) && \
 (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))

static inline __always_inline
int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_storev)(intptr_t *v, intptr_t expect, intptr_t newv,
    int cpu)
{
 RSEQ_INJECT_C(9)

 __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
#ifdef RSEQ_COMPARE_TWICE
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
#endif
      RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
      RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
      RSEQ_INJECT_ASM(3)
      RSEQ_ASM_OP_CMPEQ(v, expect, "%l[cmpfail]")
      RSEQ_INJECT_ASM(4)
#ifdef RSEQ_COMPARE_TWICE
      RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
      RSEQ_ASM_OP_CMPEQ(v, expect, "%l[error2]")
#endif
      RSEQ_ASM_OP_FINAL_STORE(v, newv, 3)
      RSEQ_INJECT_ASM(5)
      RSEQ_ASM_DEFINE_ABORT(4, abort)
      : /* gcc asm goto does not allow outputs */
      : [cpu_id]  "r" (cpu),
        [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
        [rseq_cs]  "m" (rseq_get_abi()->rseq_cs.arch.ptr),
        [v]   "m" (*v),
        [expect]  "r" (expect),
        [newv]  "r" (newv)
        RSEQ_INJECT_INPUT
      : "memory", RSEQ_ASM_TMP_REG_1
        RSEQ_INJECT_CLOBBER
      : abort, cmpfail
#ifdef RSEQ_COMPARE_TWICE
        , error1, error2
#endif
 );

 return 0;
abort:
 RSEQ_INJECT_FAILED
 return -1;
cmpfail:
 return 1;
#ifdef RSEQ_COMPARE_TWICE
error1:
 rseq_bug("cpu_id comparison failed");
error2:
 rseq_bug("expected value comparison failed");
#endif
}

static inline __always_inline
int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpnev_storeoffp_load)(intptr_t *v, intptr_t expectnot,
          off_t voffp, intptr_t *load, int cpu)
{
 RSEQ_INJECT_C(9)

 __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
#ifdef RSEQ_COMPARE_TWICE
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
#endif
      RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
      RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
      RSEQ_INJECT_ASM(3)
      RSEQ_ASM_OP_CMPNE(v, expectnot, "%l[cmpfail]")
      RSEQ_INJECT_ASM(4)
#ifdef RSEQ_COMPARE_TWICE
      RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
      RSEQ_ASM_OP_CMPNE(v, expectnot, "%l[error2]")
#endif
      RSEQ_ASM_OP_R_LOAD(v)
      RSEQ_ASM_OP_R_STORE(load)
      RSEQ_ASM_OP_R_LOAD_OFF(voffp)
      RSEQ_ASM_OP_R_FINAL_STORE(v, 3)
      RSEQ_INJECT_ASM(5)
      RSEQ_ASM_DEFINE_ABORT(4, abort)
      : /* gcc asm goto does not allow outputs */
      : [cpu_id]  "r" (cpu),
        [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
        [rseq_cs]  "m" (rseq_get_abi()->rseq_cs.arch.ptr),
        [v]   "m" (*v),
        [expectnot]  "r" (expectnot),
        [load]  "m" (*load),
        [voffp]  "Ir" (voffp)
        RSEQ_INJECT_INPUT
      : "memory", RSEQ_ASM_TMP_REG_1
        RSEQ_INJECT_CLOBBER
      : abort, cmpfail
#ifdef RSEQ_COMPARE_TWICE
        , error1, error2
#endif
 );
 return 0;
abort:
 RSEQ_INJECT_FAILED
 return -1;
cmpfail:
 return 1;
#ifdef RSEQ_COMPARE_TWICE
error1:
 rseq_bug("cpu_id comparison failed");
error2:
 rseq_bug("expected value comparison failed");
#endif
}

static inline __always_inline
int RSEQ_TEMPLATE_IDENTIFIER(rseq_addv)(intptr_t *v, intptr_t count, int cpu)
{
 RSEQ_INJECT_C(9)

 __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
#ifdef RSEQ_COMPARE_TWICE
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
#endif
      RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
      RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
      RSEQ_INJECT_ASM(3)
#ifdef RSEQ_COMPARE_TWICE
      RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
#endif
      RSEQ_ASM_OP_R_LOAD(v)
      RSEQ_ASM_OP_R_ADD(count)
      RSEQ_ASM_OP_R_FINAL_STORE(v, 3)
      RSEQ_INJECT_ASM(4)
      RSEQ_ASM_DEFINE_ABORT(4, abort)
      : /* gcc asm goto does not allow outputs */
      : [cpu_id]  "r" (cpu),
        [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
        [rseq_cs]  "m" (rseq_get_abi()->rseq_cs.arch.ptr),
        [v]   "m" (*v),
        [count]  "r" (count)
        RSEQ_INJECT_INPUT
      : "memory", RSEQ_ASM_TMP_REG_1
        RSEQ_INJECT_CLOBBER
      : abort
#ifdef RSEQ_COMPARE_TWICE
        , error1
#endif
 );
 return 0;
abort:
 RSEQ_INJECT_FAILED
 return -1;
#ifdef RSEQ_COMPARE_TWICE
error1:
 rseq_bug("cpu_id comparison failed");
#endif
}

static inline __always_inline
int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_cmpeqv_storev)(intptr_t *v, intptr_t expect,
         intptr_t *v2, intptr_t expect2,
         intptr_t newv, int cpu)
{
 RSEQ_INJECT_C(9)

 __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
#ifdef RSEQ_COMPARE_TWICE
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error3]")
#endif
      RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
      RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
      RSEQ_INJECT_ASM(3)
      RSEQ_ASM_OP_CMPEQ(v, expect, "%l[cmpfail]")
      RSEQ_INJECT_ASM(4)
      RSEQ_ASM_OP_CMPEQ(v2, expect2, "%l[cmpfail]")
      RSEQ_INJECT_ASM(5)
#ifdef RSEQ_COMPARE_TWICE
      RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
      RSEQ_ASM_OP_CMPEQ(v, expect, "%l[error2]")
      RSEQ_ASM_OP_CMPEQ(v2, expect2, "%l[error3]")
#endif
      RSEQ_ASM_OP_FINAL_STORE(v, newv, 3)
      RSEQ_INJECT_ASM(6)
      RSEQ_ASM_DEFINE_ABORT(4, abort)
      : /* gcc asm goto does not allow outputs */
      : [cpu_id]  "r" (cpu),
        [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
        [rseq_cs]  "m" (rseq_get_abi()->rseq_cs.arch.ptr),
        [v]   "m" (*v),
        [expect]  "r" (expect),
        [v2]  "m" (*v2),
        [expect2]  "r" (expect2),
        [newv]  "r" (newv)
        RSEQ_INJECT_INPUT
      : "memory", RSEQ_ASM_TMP_REG_1
        RSEQ_INJECT_CLOBBER
      : abort, cmpfail
#ifdef RSEQ_COMPARE_TWICE
        , error1, error2, error3
#endif
 );

 return 0;
abort:
 RSEQ_INJECT_FAILED
 return -1;
cmpfail:
 return 1;
#ifdef RSEQ_COMPARE_TWICE
error1:
 rseq_bug("cpu_id comparison failed");
error2:
 rseq_bug("expected value comparison failed");
error3:
 rseq_bug("2nd expected value comparison failed");
#endif
}

#define RSEQ_ARCH_HAS_OFFSET_DEREF_ADDV

/*
 *   pval = *(ptr+off)
 *  *pval += inc;
 */
static inline __always_inline
int RSEQ_TEMPLATE_IDENTIFIER(rseq_offset_deref_addv)(intptr_t *ptr, off_t off, intptr_t inc,
    int cpu)
{
 RSEQ_INJECT_C(9)

 __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
#ifdef RSEQ_COMPARE_TWICE
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
#endif
      RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
      RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
      RSEQ_INJECT_ASM(3)
#ifdef RSEQ_COMPARE_TWICE
      RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
#endif
      RSEQ_ASM_OP_R_DEREF_ADDV(ptr, off, inc, 3)
      RSEQ_INJECT_ASM(4)
      RSEQ_ASM_DEFINE_ABORT(4, abort)
      : /* gcc asm goto does not allow outputs */
      : [cpu_id]  "r" (cpu),
        [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
        [rseq_cs]  "m" (rseq_get_abi()->rseq_cs.arch.ptr),
        [ptr]  "r" (ptr),
        [off]  "r" (off),
        [inc]  "r" (inc)
        RSEQ_INJECT_INPUT
      : "memory", RSEQ_ASM_TMP_REG_1
        RSEQ_INJECT_CLOBBER
      : abort
#ifdef RSEQ_COMPARE_TWICE
        , error1
#endif
 );
 return 0;
abort:
 RSEQ_INJECT_FAILED
 return -1;
#ifdef RSEQ_COMPARE_TWICE
error1:
 rseq_bug("cpu_id comparison failed");
#endif
}

#endif /* #if defined(RSEQ_TEMPLATE_MO_RELAXED) &&
(defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */

#if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) && \
 (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))

static inline __always_inline
int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trystorev_storev)(intptr_t *v, intptr_t expect,
     intptr_t *v2, intptr_t newv2,
     intptr_t newv, int cpu)
{
 RSEQ_INJECT_C(9)

 __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
#ifdef RSEQ_COMPARE_TWICE
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
#endif
      RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
      RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
      RSEQ_INJECT_ASM(3)
      RSEQ_ASM_OP_CMPEQ(v, expect, "%l[cmpfail]")
      RSEQ_INJECT_ASM(4)
#ifdef RSEQ_COMPARE_TWICE
      RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
      RSEQ_ASM_OP_CMPEQ(v, expect, "%l[error2]")
#endif
      RSEQ_ASM_OP_STORE(v2, newv2)
      RSEQ_INJECT_ASM(5)
#ifdef RSEQ_TEMPLATE_MO_RELEASE
      RSEQ_ASM_OP_FINAL_STORE_RELEASE(v, newv, 3)
#else
      RSEQ_ASM_OP_FINAL_STORE(v, newv, 3)
#endif
      RSEQ_INJECT_ASM(6)
      RSEQ_ASM_DEFINE_ABORT(4, abort)
      : /* gcc asm goto does not allow outputs */
      : [cpu_id]  "r" (cpu),
        [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
        [rseq_cs]  "m" (rseq_get_abi()->rseq_cs.arch.ptr),
        [expect]  "r" (expect),
        [v]   "m" (*v),
        [newv]  "r" (newv),
        [v2]  "m" (*v2),
        [newv2]  "r" (newv2)
        RSEQ_INJECT_INPUT
      : "memory", RSEQ_ASM_TMP_REG_1
        RSEQ_INJECT_CLOBBER
      : abort, cmpfail
#ifdef RSEQ_COMPARE_TWICE
        , error1, error2
#endif
 );

 return 0;
abort:
 RSEQ_INJECT_FAILED
 return -1;
cmpfail:
 return 1;
#ifdef RSEQ_COMPARE_TWICE
error1:
 rseq_bug("cpu_id comparison failed");
error2:
 rseq_bug("expected value comparison failed");
#endif
}

static inline __always_inline
int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trymemcpy_storev)(intptr_t *v, intptr_t expect,
     void *dst, void *src, size_t len,
     intptr_t newv, int cpu)
{
 RSEQ_INJECT_C(9)
 __asm__ __volatile__ goto(RSEQ_ASM_DEFINE_TABLE(1, 2f, 3f, 4f)
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[cmpfail]")
#ifdef RSEQ_COMPARE_TWICE
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error1]")
      RSEQ_ASM_DEFINE_EXIT_POINT(2f, "%l[error2]")
#endif
      RSEQ_ASM_STORE_RSEQ_CS(2, 1b, rseq_cs)
      RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
      RSEQ_INJECT_ASM(3)
      RSEQ_ASM_OP_CMPEQ(v, expect, "%l[cmpfail]")
      RSEQ_INJECT_ASM(4)
#ifdef RSEQ_COMPARE_TWICE
      RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, "%l[error1]")
      RSEQ_ASM_OP_CMPEQ(v, expect, "%l[error2]")
#endif
      RSEQ_ASM_OP_R_BAD_MEMCPY(dst, src, len)
      RSEQ_INJECT_ASM(5)
#ifdef RSEQ_TEMPLATE_MO_RELEASE
      RSEQ_ASM_OP_FINAL_STORE_RELEASE(v, newv, 3)
#else
      RSEQ_ASM_OP_FINAL_STORE(v, newv, 3)
#endif
      RSEQ_INJECT_ASM(6)
      RSEQ_ASM_DEFINE_ABORT(4, abort)
      : /* gcc asm goto does not allow outputs */
      : [cpu_id]  "r" (cpu),
        [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD),
        [rseq_cs]  "m" (rseq_get_abi()->rseq_cs.arch.ptr),
        [expect]  "r" (expect),
        [v]   "m" (*v),
        [newv]  "r" (newv),
        [dst]  "r" (dst),
        [src]  "r" (src),
        [len]  "r" (len)
        RSEQ_INJECT_INPUT
      : "memory", RSEQ_ASM_TMP_REG_1, RSEQ_ASM_TMP_REG_2,
        RSEQ_ASM_TMP_REG_3, RSEQ_ASM_TMP_REG_4
        RSEQ_INJECT_CLOBBER
      : abort, cmpfail
#ifdef RSEQ_COMPARE_TWICE
        , error1, error2
#endif
 );

 return 0;
abort:
 RSEQ_INJECT_FAILED
 return -1;
cmpfail:
 return 1;
#ifdef RSEQ_COMPARE_TWICE
error1:
 rseq_bug("cpu_id comparison failed");
error2:
 rseq_bug("expected value comparison failed");
#endif
}

#endif /* #if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) &&
(defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */

#include "rseq-bits-reset.h"