diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/arch/aarch64/misc_helpers.S | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/lib/arch/aarch64/misc_helpers.S b/lib/arch/aarch64/misc_helpers.S index 08a568ef..c951d0ef 100644 --- a/lib/arch/aarch64/misc_helpers.S +++ b/lib/arch/aarch64/misc_helpers.S @@ -29,6 +29,10 @@ */ #include <arch_helpers.h> +#include <runtime_svc.h> + + .globl save_regs + .globl restore_regs .globl enable_irq .globl disable_irq @@ -80,6 +84,51 @@ .section .text, "ax" +save_regs:; .type save_regs, %function + sub sp, sp, #GPREGS_FP_OFF + stp x0, x1, [sp, #GPREGS_X0_OFF] + stp x2, x3, [sp, #GPREGS_X2_OFF] + stp x4, x5, [sp, #GPREGS_X4_OFF] + stp x6, x7, [sp, #GPREGS_X6_OFF] + stp x8, x9, [sp, #GPREGS_X8_OFF] + stp x10, x11, [sp, #GPREGS_X10_OFF] + stp x12, x13, [sp, #GPREGS_X12_OFF] + stp x14, x15, [sp, #GPREGS_X14_OFF] + stp x16, x17, [sp, #GPREGS_X16_OFF] + stp x18, x19, [sp, #GPREGS_X18_OFF] + stp x20, x21, [sp, #GPREGS_X20_OFF] + stp x22, x23, [sp, #GPREGS_X22_OFF] + stp x24, x25, [sp, #GPREGS_X24_OFF] + stp x26, x27, [sp, #GPREGS_X26_OFF] + mrs x0, sp_el0 + stp x28, x0, [sp, #GPREGS_X28_OFF] + mrs x0, spsr_el3 + str x0, [sp, #GPREGS_SPSR_OFF] + ret + + +restore_regs:; .type restore_regs, %function + ldr x9, [sp, #GPREGS_SPSR_OFF] + msr spsr_el3, x9 + ldp x28, x9, [sp, #GPREGS_X28_OFF] + msr sp_el0, x9 + ldp x26, x27, [sp, #GPREGS_X26_OFF] + ldp x24, x25, [sp, #GPREGS_X24_OFF] + ldp x22, x23, [sp, #GPREGS_X22_OFF] + ldp x20, x21, [sp, #GPREGS_X20_OFF] + ldp x18, x19, [sp, #GPREGS_X18_OFF] + ldp x16, x17, [sp, #GPREGS_X16_OFF] + ldp x14, x15, [sp, #GPREGS_X14_OFF] + ldp x12, x13, [sp, #GPREGS_X12_OFF] + ldp x10, x11, [sp, #GPREGS_X10_OFF] + ldp x8, x9, [sp, #GPREGS_X8_OFF] + ldp x6, x7, [sp, #GPREGS_X6_OFF] + ldp x4, x5, [sp, #GPREGS_X4_OFF] + ldp x2, x3, [sp, #GPREGS_X2_OFF] + ldp x0, x1, [sp, #GPREGS_X0_OFF] + add sp, sp, #GPREGS_FP_OFF + ret + get_afflvl_shift:; .type get_afflvl_shift, %function cmp x0, #3 cinc x0, x0, eq |