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/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
/*
* rseq-ppc-bits.h
*
* (C) Copyright 2016-2018 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
* (C) Copyright 2016-2018 - Boqun Feng <boqun.feng@gmail.com>
*/
#include "rseq-bits-template.h"
#if defined(RSEQ_TEMPLATE_MO_RELAXED) && \
(defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID))
static inline __attribute__((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(3, 1f, 2f, 4f) /* start, commit, abort */
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
#ifdef RSEQ_COMPARE_TWICE
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
#endif
/* Start rseq by storing table entry pointer into rseq_cs. */
RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
/* cmp cpuid */
RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
RSEQ_INJECT_ASM(3)
/* cmp @v equal to @expect */
RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
RSEQ_INJECT_ASM(4)
#ifdef RSEQ_COMPARE_TWICE
/* cmp cpuid */
RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
/* cmp @v equal to @expect */
RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
#endif
/* final store */
RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
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", "cc", "r17"
RSEQ_INJECT_CLOBBER
: abort, cmpfail
#ifdef RSEQ_COMPARE_TWICE
, error1, error2
#endif
);
rseq_after_asm_goto();
return 0;
abort:
rseq_after_asm_goto();
RSEQ_INJECT_FAILED
return -1;
cmpfail:
rseq_after_asm_goto();
return 1;
#ifdef RSEQ_COMPARE_TWICE
error1:
rseq_after_asm_goto();
rseq_bug("cpu_id comparison failed");
error2:
rseq_after_asm_goto();
rseq_bug("expected value comparison failed");
#endif
}
static inline __attribute__((always_inline))
int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpnev_storeoffp_load)(intptr_t *v, intptr_t expectnot,
long voffp, intptr_t *load, int cpu)
{
RSEQ_INJECT_C(9)
__asm__ __volatile__ goto (
RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
#ifdef RSEQ_COMPARE_TWICE
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
#endif
/* Start rseq by storing table entry pointer into rseq_cs. */
RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
/* cmp cpuid */
RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
RSEQ_INJECT_ASM(3)
/* cmp @v not equal to @expectnot */
RSEQ_ASM_OP_CMPNE(v, expectnot, %l[cmpfail])
RSEQ_INJECT_ASM(4)
#ifdef RSEQ_COMPARE_TWICE
/* cmp cpuid */
RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
/* cmp @v not equal to @expectnot */
RSEQ_ASM_OP_CMPNE(v, expectnot, %l[error2])
#endif
/* load the value of @v */
RSEQ_ASM_OP_R_LOAD(v)
/* store it in @load */
RSEQ_ASM_OP_R_STORE(load)
/* dereference voffp(v) */
RSEQ_ASM_OP_R_LOADX(voffp)
/* final store the value at voffp(v) */
RSEQ_ASM_OP_R_FINAL_STORE(v, 2)
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),
/* final store input */
[v] "m" (*v),
[expectnot] "r" (expectnot),
[voffp] "b" (voffp),
[load] "m" (*load)
RSEQ_INJECT_INPUT
: "memory", "cc", "r17"
RSEQ_INJECT_CLOBBER
: abort, cmpfail
#ifdef RSEQ_COMPARE_TWICE
, error1, error2
#endif
);
rseq_after_asm_goto();
return 0;
abort:
rseq_after_asm_goto();
RSEQ_INJECT_FAILED
return -1;
cmpfail:
rseq_after_asm_goto();
return 1;
#ifdef RSEQ_COMPARE_TWICE
error1:
rseq_after_asm_goto();
rseq_bug("cpu_id comparison failed");
error2:
rseq_after_asm_goto();
rseq_bug("expected value comparison failed");
#endif
}
static inline __attribute__((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(3, 1f, 2f, 4f) /* start, commit, abort */
#ifdef RSEQ_COMPARE_TWICE
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
#endif
/* Start rseq by storing table entry pointer into rseq_cs. */
RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
/* cmp cpuid */
RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
RSEQ_INJECT_ASM(3)
#ifdef RSEQ_COMPARE_TWICE
/* cmp cpuid */
RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
#endif
/* load the value of @v */
RSEQ_ASM_OP_R_LOAD(v)
/* add @count to it */
RSEQ_ASM_OP_R_ADD(count)
/* final store */
RSEQ_ASM_OP_R_FINAL_STORE(v, 2)
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),
/* final store input */
[v] "m" (*v),
[count] "r" (count)
RSEQ_INJECT_INPUT
: "memory", "cc", "r17"
RSEQ_INJECT_CLOBBER
: abort
#ifdef RSEQ_COMPARE_TWICE
, error1
#endif
);
rseq_after_asm_goto();
return 0;
abort:
rseq_after_asm_goto();
RSEQ_INJECT_FAILED
return -1;
#ifdef RSEQ_COMPARE_TWICE
error1:
rseq_after_asm_goto();
rseq_bug("cpu_id comparison failed");
#endif
}
static inline __attribute__((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(3, 1f, 2f, 4f) /* start, commit, abort */
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
#ifdef RSEQ_COMPARE_TWICE
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3])
#endif
/* Start rseq by storing table entry pointer into rseq_cs. */
RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
/* cmp cpuid */
RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
RSEQ_INJECT_ASM(3)
/* cmp @v equal to @expect */
RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
RSEQ_INJECT_ASM(4)
/* cmp @v2 equal to @expct2 */
RSEQ_ASM_OP_CMPEQ(v2, expect2, %l[cmpfail])
RSEQ_INJECT_ASM(5)
#ifdef RSEQ_COMPARE_TWICE
/* cmp cpuid */
RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
/* cmp @v equal to @expect */
RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
/* cmp @v2 equal to @expct2 */
RSEQ_ASM_OP_CMPEQ(v2, expect2, %l[error3])
#endif
/* final store */
RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
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),
/* cmp2 input */
[v2] "m" (*v2),
[expect2] "r" (expect2),
/* final store input */
[v] "m" (*v),
[expect] "r" (expect),
[newv] "r" (newv)
RSEQ_INJECT_INPUT
: "memory", "cc", "r17"
RSEQ_INJECT_CLOBBER
: abort, cmpfail
#ifdef RSEQ_COMPARE_TWICE
, error1, error2, error3
#endif
);
rseq_after_asm_goto();
return 0;
abort:
rseq_after_asm_goto();
RSEQ_INJECT_FAILED
return -1;
cmpfail:
rseq_after_asm_goto();
return 1;
#ifdef RSEQ_COMPARE_TWICE
error1:
rseq_after_asm_goto();
rseq_bug("cpu_id comparison failed");
error2:
rseq_after_asm_goto();
rseq_bug("1st expected value comparison failed");
error3:
rseq_after_asm_goto();
rseq_bug("2nd expected value 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 __attribute__((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(3, 1f, 2f, 4f) /* start, commit, abort */
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
#ifdef RSEQ_COMPARE_TWICE
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
#endif
/* Start rseq by storing table entry pointer into rseq_cs. */
RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
/* cmp cpuid */
RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
RSEQ_INJECT_ASM(3)
/* cmp @v equal to @expect */
RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
RSEQ_INJECT_ASM(4)
#ifdef RSEQ_COMPARE_TWICE
/* cmp cpuid */
RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
/* cmp @v equal to @expect */
RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
#endif
/* try store */
RSEQ_ASM_OP_STORE(newv2, v2)
RSEQ_INJECT_ASM(5)
#ifdef RSEQ_TEMPLATE_MO_RELEASE
/* for 'release' */
"lwsync\n\t"
#endif
/* final store */
RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
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),
/* try store input */
[v2] "m" (*v2),
[newv2] "r" (newv2),
/* final store input */
[v] "m" (*v),
[expect] "r" (expect),
[newv] "r" (newv)
RSEQ_INJECT_INPUT
: "memory", "cc", "r17"
RSEQ_INJECT_CLOBBER
: abort, cmpfail
#ifdef RSEQ_COMPARE_TWICE
, error1, error2
#endif
);
rseq_after_asm_goto();
return 0;
abort:
rseq_after_asm_goto();
RSEQ_INJECT_FAILED
return -1;
cmpfail:
rseq_after_asm_goto();
return 1;
#ifdef RSEQ_COMPARE_TWICE
error1:
rseq_after_asm_goto();
rseq_bug("cpu_id comparison failed");
error2:
rseq_after_asm_goto();
rseq_bug("expected value comparison failed");
#endif
}
static inline __attribute__((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(3, 1f, 2f, 4f) /* start, commit, abort */
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail])
#ifdef RSEQ_COMPARE_TWICE
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1])
RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2])
#endif
/* setup for mempcy */
"mr %%r19, %[len]\n\t"
"mr %%r20, %[src]\n\t"
"mr %%r21, %[dst]\n\t"
/* Start rseq by storing table entry pointer into rseq_cs. */
RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs)
/* cmp cpuid */
RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f)
RSEQ_INJECT_ASM(3)
/* cmp @v equal to @expect */
RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail])
RSEQ_INJECT_ASM(4)
#ifdef RSEQ_COMPARE_TWICE
/* cmp cpuid */
RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1])
/* cmp @v equal to @expect */
RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2])
#endif
/* try memcpy */
RSEQ_ASM_OP_R_MEMCPY()
RSEQ_INJECT_ASM(5)
#ifdef RSEQ_TEMPLATE_MO_RELEASE
/* for 'release' */
"lwsync\n\t"
#endif
/* final store */
RSEQ_ASM_OP_FINAL_STORE(newv, v, 2)
RSEQ_INJECT_ASM(6)
/* teardown */
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),
/* final store input */
[v] "m" (*v),
[expect] "r" (expect),
[newv] "r" (newv),
/* try memcpy input */
[dst] "r" (dst),
[src] "r" (src),
[len] "r" (len)
RSEQ_INJECT_INPUT
: "memory", "cc", "r17", "r18", "r19", "r20", "r21"
RSEQ_INJECT_CLOBBER
: abort, cmpfail
#ifdef RSEQ_COMPARE_TWICE
, error1, error2
#endif
);
rseq_after_asm_goto();
return 0;
abort:
rseq_after_asm_goto();
RSEQ_INJECT_FAILED
return -1;
cmpfail:
rseq_after_asm_goto();
return 1;
#ifdef RSEQ_COMPARE_TWICE
error1:
rseq_after_asm_goto();
rseq_bug("cpu_id comparison failed");
error2:
rseq_after_asm_goto();
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"
|
