diff options
| author | Richard Henderson <rth@twiddle.net> | 2013-08-15 12:54:28 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@redhat.com> | 2014-04-16 12:12:59 -0400 |
| commit | d82b78e48b3583af5cd62c7e096664782c23d04a (patch) | |
| tree | 0677943d46776a4790d43cada986c26186e21014 /tcg/aarch64/tcg-target.h | |
| parent | 3d9e69a238874d70861ac219a5a87320efaf21dd (diff) | |
| download | qemu-d82b78e48b3583af5cd62c7e096664782c23d04a.tar.gz | |
tcg-aarch64: Reuse LR in translated code
It's obviously call-clobbered, but is otherwise unused.
Repurpose it as the TCG temporary.
Reviewed-by: Claudio Fontana <claudio.fontana@huawei.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg/aarch64/tcg-target.h')
| -rw-r--r-- | tcg/aarch64/tcg-target.h | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/tcg/aarch64/tcg-target.h b/tcg/aarch64/tcg-target.h index 988983ed59..faccc36970 100644 --- a/tcg/aarch64/tcg-target.h +++ b/tcg/aarch64/tcg-target.h @@ -17,17 +17,23 @@ #undef TCG_TARGET_STACK_GROWSUP typedef enum { - TCG_REG_X0, TCG_REG_X1, TCG_REG_X2, TCG_REG_X3, TCG_REG_X4, - TCG_REG_X5, TCG_REG_X6, TCG_REG_X7, TCG_REG_X8, TCG_REG_X9, - TCG_REG_X10, TCG_REG_X11, TCG_REG_X12, TCG_REG_X13, TCG_REG_X14, - TCG_REG_X15, TCG_REG_X16, TCG_REG_X17, TCG_REG_X18, TCG_REG_X19, - TCG_REG_X20, TCG_REG_X21, TCG_REG_X22, TCG_REG_X23, TCG_REG_X24, - TCG_REG_X25, TCG_REG_X26, TCG_REG_X27, TCG_REG_X28, - TCG_REG_FP, /* frame pointer */ - TCG_REG_LR, /* link register */ - TCG_REG_SP, /* stack pointer or zero register */ - TCG_REG_XZR = TCG_REG_SP /* same register number */ - /* program counter is not directly accessible! */ + TCG_REG_X0, TCG_REG_X1, TCG_REG_X2, TCG_REG_X3, + TCG_REG_X4, TCG_REG_X5, TCG_REG_X6, TCG_REG_X7, + TCG_REG_X8, TCG_REG_X9, TCG_REG_X10, TCG_REG_X11, + TCG_REG_X12, TCG_REG_X13, TCG_REG_X14, TCG_REG_X15, + TCG_REG_X16, TCG_REG_X17, TCG_REG_X18, TCG_REG_X19, + TCG_REG_X20, TCG_REG_X21, TCG_REG_X22, TCG_REG_X23, + TCG_REG_X24, TCG_REG_X25, TCG_REG_X26, TCG_REG_X27, + TCG_REG_X28, TCG_REG_X29, TCG_REG_X30, + + /* X31 is either the stack pointer or zero, depending on context. */ + TCG_REG_SP = 31, + TCG_REG_XZR = 31, + + /* Aliases. */ + TCG_REG_FP = TCG_REG_X29, + TCG_REG_LR = TCG_REG_X30, + TCG_AREG0 = TCG_REG_X19, } TCGReg; #define TCG_TARGET_NB_REGS 32 @@ -92,10 +98,6 @@ typedef enum { #define TCG_TARGET_HAS_muluh_i64 1 #define TCG_TARGET_HAS_mulsh_i64 1 -enum { - TCG_AREG0 = TCG_REG_X19, -}; - #define TCG_TARGET_HAS_new_ldst 0 static inline void flush_icache_range(uintptr_t start, uintptr_t stop) |