selftests/rseq: riscv: Template memory ordering and percpu access mode

Introduce a rseq-riscv-bits.h template header which is internally included
to generate the static inline functions covering:

- relaxed and release memory ordering,
- per-cpu-id and per-mm-cid per-cpu data access.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221122203932.231377-18-mathieu.desnoyers@efficios.com
This commit is contained in:
Mathieu Desnoyers 2022-11-22 15:39:19 -05:00 committed by Peter Zijlstra
parent a94af3c584
commit 171586a6ab
2 changed files with 434 additions and 497 deletions

View File

@ -0,0 +1,410 @@
/* 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(newv, 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),
[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] "r" (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(newv, v, 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, 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] "er" (off),
[inc] "er" (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(newv2, v2)
RSEQ_INJECT_ASM(5)
#ifdef RSEQ_TEMPLATE_MO_RELEASE
RSEQ_ASM_OP_FINAL_STORE_RELEASE(newv, v, 3)
#else
RSEQ_ASM_OP_FINAL_STORE(newv, v, 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(newv, v, 3)
#else
RSEQ_ASM_OP_FINAL_STORE(newv, v, 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"

View File

@ -165,507 +165,34 @@ do { \
RSEQ_ASM_OP_R_ADD(inc) \
__rseq_str(post_commit_label) ":\n"
static inline __always_inline
int rseq_cmpeqv_storev(intptr_t *v, intptr_t expect, intptr_t newv, int cpu)
{
RSEQ_INJECT_C(9)
/* Per-cpu-id indexing. */
__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(newv, 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()->cpu_id),
[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
);
#define RSEQ_TEMPLATE_CPU_ID
#define RSEQ_TEMPLATE_MO_RELAXED
#include "rseq-riscv-bits.h"
#undef RSEQ_TEMPLATE_MO_RELAXED
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
}
#define RSEQ_TEMPLATE_MO_RELEASE
#include "rseq-riscv-bits.h"
#undef RSEQ_TEMPLATE_MO_RELEASE
#undef RSEQ_TEMPLATE_CPU_ID
static inline __always_inline
int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
off_t voffp, intptr_t *load, int cpu)
{
RSEQ_INJECT_C(9)
/* Per-mm-cid indexing. */
__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()->cpu_id),
[rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
[v] "m" (*v),
[expectnot] "r" (expectnot),
[load] "m" (*load),
[voffp] "r" (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
}
#define RSEQ_TEMPLATE_MM_CID
#define RSEQ_TEMPLATE_MO_RELAXED
#include "rseq-riscv-bits.h"
#undef RSEQ_TEMPLATE_MO_RELAXED
static inline __always_inline
int rseq_addv(intptr_t *v, intptr_t count, int cpu)
{
RSEQ_INJECT_C(9)
#define RSEQ_TEMPLATE_MO_RELEASE
#include "rseq-riscv-bits.h"
#undef RSEQ_TEMPLATE_MO_RELEASE
#undef RSEQ_TEMPLATE_MM_CID
__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()->cpu_id),
[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
}
/* APIs which are not based on cpu ids. */
static inline __always_inline
int 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(newv2, v2)
RSEQ_INJECT_ASM(5)
RSEQ_ASM_OP_FINAL_STORE(newv, v, 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()->cpu_id),
[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_cmpeqv_trystorev_storev_release(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(newv2, v2)
RSEQ_INJECT_ASM(5)
RSEQ_ASM_OP_FINAL_STORE_RELEASE(newv, v, 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()->cpu_id),
[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_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(newv, v, 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()->cpu_id),
[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
}
static inline __always_inline
int 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)
RSEQ_ASM_OP_FINAL_STORE(newv, v, 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()->cpu_id),
[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
}
static inline __always_inline
int rseq_cmpeqv_trymemcpy_storev_release(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)
RSEQ_ASM_OP_FINAL_STORE_RELEASE(newv, v, 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()->cpu_id),
[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
}
#define RSEQ_ARCH_HAS_OFFSET_DEREF_ADDV
/*
* pval = *(ptr+off)
* *pval += inc;
*/
static inline __always_inline
int 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, 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()->cpu_id),
[rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr),
[ptr] "r" (ptr),
[off] "er" (off),
[inc] "er" (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
}
#define RSEQ_TEMPLATE_CPU_ID_NONE
#define RSEQ_TEMPLATE_MO_RELAXED
#include "rseq-riscv-bits.h"
#undef RSEQ_TEMPLATE_MO_RELAXED
#undef RSEQ_TEMPLATE_CPU_ID_NONE