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target/arm: Move compare_u64 to helper.c

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We will use this function beyond kvm.c.

Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2025-09-16 07:22:03 -07:00 • committed by Peter Maydell
parent 363e612c2e
commit 5a8af95cb3
3 changed files with 14 additions and 11 deletions
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11
target/arm/helper.c
View file

@ -40,6 +40,17 @@
static void switch_mode(CPUARMState *env, int mode);
int compare_u64(const void *a, const void *b)
{
if (*(uint64_t *)a > *(uint64_t *)b) {
return 1;
}
if (*(uint64_t *)a < *(uint64_t *)b) {
return -1;
}
return 0;
}
uint64_t raw_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
assert(ri->fieldoffset);

3
target/arm/internals.h
View file

@ -2004,4 +2004,7 @@ void vfp_clear_float_status_exc_flags(CPUARMState *env);
void vfp_set_fpcr_to_host(CPUARMState *env, uint32_t val, uint32_t mask);
bool arm_pan_enabled(CPUARMState *env);
/* Compare uint64_t for qsort and bsearch. */
int compare_u64(const void *a, const void *b);
#endif

11
target/arm/kvm.c
View file

@ -718,17 +718,6 @@ void kvm_arm_register_device(MemoryRegion *mr, uint64_t devid, uint64_t group,
memory_region_ref(kd->mr);
}
static int compare_u64(const void *a, const void *b)
{
if (*(uint64_t *)a > *(uint64_t *)b) {
return 1;
}
if (*(uint64_t *)a < *(uint64_t *)b) {
return -1;
}
return 0;
}
/*
* cpreg_values are sorted in ascending order by KVM register ID
* (see kvm_arm_init_cpreg_list). This allows us to cheaply find