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arm64: introduce aarch64_insn_gen_load_store_pair()

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Introduce function to generate load/store pair instructions.

Signed-off-by: Zi Shen Lim <zlim.lnx@gmail.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Zi Shen Lim
2014-08-27 05:15:21 +01:00
committed by Will Deacon
parent 17cac17988
commit 1bba567d0f
2 changed files with 81 additions and 0 deletions
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16
arch/arm64/include/asm/insn.h
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@@ -66,12 +66,14 @@ enum aarch64_insn_imm_type {
AARCH64_INSN_IMM_14,
AARCH64_INSN_IMM_12,
AARCH64_INSN_IMM_9,
AARCH64_INSN_IMM_7,
AARCH64_INSN_IMM_MAX
};
enum aarch64_insn_register_type {
AARCH64_INSN_REGTYPE_RT,
AARCH64_INSN_REGTYPE_RN,
AARCH64_INSN_REGTYPE_RT2,
AARCH64_INSN_REGTYPE_RM,
};
@@ -154,6 +156,10 @@ enum aarch64_insn_size_type {
enum aarch64_insn_ldst_type {
AARCH64_INSN_LDST_LOAD_REG_OFFSET,
AARCH64_INSN_LDST_STORE_REG_OFFSET,
AARCH64_INSN_LDST_LOAD_PAIR_PRE_INDEX,
AARCH64_INSN_LDST_STORE_PAIR_PRE_INDEX,
AARCH64_INSN_LDST_LOAD_PAIR_POST_INDEX,
AARCH64_INSN_LDST_STORE_PAIR_POST_INDEX,
};
#define __AARCH64_INSN_FUNCS(abbr, mask, val) \
@@ -164,6 +170,10 @@ static __always_inline u32 aarch64_insn_get_##abbr##_value(void) \
__AARCH64_INSN_FUNCS(str_reg, 0x3FE0EC00, 0x38206800)
__AARCH64_INSN_FUNCS(ldr_reg, 0x3FE0EC00, 0x38606800)
__AARCH64_INSN_FUNCS(stp_post, 0x7FC00000, 0x28800000)
__AARCH64_INSN_FUNCS(ldp_post, 0x7FC00000, 0x28C00000)
__AARCH64_INSN_FUNCS(stp_pre, 0x7FC00000, 0x29800000)
__AARCH64_INSN_FUNCS(ldp_pre, 0x7FC00000, 0x29C00000)
__AARCH64_INSN_FUNCS(b, 0xFC000000, 0x14000000)
__AARCH64_INSN_FUNCS(bl, 0xFC000000, 0x94000000)
__AARCH64_INSN_FUNCS(cbz, 0xFE000000, 0x34000000)
@@ -204,6 +214,12 @@ u32 aarch64_insn_gen_load_store_reg(enum aarch64_insn_register reg,
enum aarch64_insn_register offset,
enum aarch64_insn_size_type size,
enum aarch64_insn_ldst_type type);
u32 aarch64_insn_gen_load_store_pair(enum aarch64_insn_register reg1,
enum aarch64_insn_register reg2,
enum aarch64_insn_register base,
int offset,
enum aarch64_insn_variant variant,
enum aarch64_insn_ldst_type type);
bool aarch64_insn_hotpatch_safe(u32 old_insn, u32 new_insn);