diff options
Diffstat (limited to 'sysdeps/aarch64/tst-sme-jmp.c')
-rw-r--r-- | sysdeps/aarch64/tst-sme-jmp.c | 81 |
1 files changed, 3 insertions, 78 deletions
diff --git a/sysdeps/aarch64/tst-sme-jmp.c b/sysdeps/aarch64/tst-sme-jmp.c index 62c419f..103897a 100644 --- a/sysdeps/aarch64/tst-sme-jmp.c +++ b/sysdeps/aarch64/tst-sme-jmp.c @@ -27,87 +27,12 @@ #include <support/support.h> #include <support/test-driver.h> -struct blk { - void *za_save_buffer; - uint16_t num_za_save_slices; - char __reserved[6]; -}; +#include "tst-sme-helper.h" -static unsigned long svl; static uint8_t *za_orig; static uint8_t *za_dump; static uint8_t *za_save; -static unsigned long -get_svl (void) -{ - register unsigned long x0 asm ("x0"); - asm volatile ( - ".inst 0x04bf5820 /* rdsvl x0, 1 */\n" - : "=r" (x0)); - return x0; -} - -/* PSTATE.ZA = 1, set ZA state to active. */ -static void -start_za (void) -{ - asm volatile ( - ".inst 0xd503457f /* smstart za */"); -} - -/* Read SVCR to get SM (bit0) and ZA (bit1) state. */ -static unsigned long -get_svcr (void) -{ - register unsigned long x0 asm ("x0"); - asm volatile ( - ".inst 0xd53b4240 /* mrs x0, svcr */\n" - : "=r" (x0)); - return x0; -} - -/* Load data into ZA byte by byte from p. */ -static void __attribute__ ((noinline)) -load_za (const void *p) -{ - register unsigned long x15 asm ("x15") = 0; - register unsigned long x16 asm ("x16") = (unsigned long)p; - register unsigned long x17 asm ("x17") = svl; - - asm volatile ( - ".inst 0xd503437f /* smstart sm */\n" - ".L_ldr_loop:\n" - ".inst 0xe1006200 /* ldr za[w15, 0], [x16] */\n" - "add w15, w15, 1\n" - ".inst 0x04305030 /* addvl x16, x16, 1 */\n" - "cmp w15, w17\n" - "bne .L_ldr_loop\n" - ".inst 0xd503427f /* smstop sm */\n" - : "+r"(x15), "+r"(x16), "+r"(x17)); -} - -/* Set tpidr2 to BLK. */ -static void -set_tpidr2 (struct blk *blk) -{ - register unsigned long x0 asm ("x0") = (unsigned long)blk; - asm volatile ( - ".inst 0xd51bd0a0 /* msr tpidr2_el0, x0 */\n" - :: "r"(x0) : "memory"); -} - -/* Returns tpidr2. */ -static void * -get_tpidr2 (void) -{ - register unsigned long x0 asm ("x0"); - asm volatile ( - ".inst 0xd53bd0a0 /* mrs x0, tpidr2_el0 */\n" - : "=r"(x0) :: "memory"); - return (void *) x0; -} - static void print_data(const char *msg, void *p) { @@ -168,8 +93,8 @@ longjmp_test (void) { p = get_tpidr2 (); printf ("before longjmp: tp2 = %p\n", p); - if (p != &blk) - FAIL_EXIT1 ("tpidr2 is clobbered"); + if (p != NULL) + FAIL_EXIT1 ("tpidr2 has not been reset to null"); do_longjmp (env); FAIL_EXIT1 ("longjmp returned"); } |