diff options
author | pbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-03-31 03:46:33 +0000 |
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committer | pbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-03-31 03:46:33 +0000 |
commit | 6ddbc6e4cfbfa0937fdebd8aa7b518d8b7fd118b (patch) | |
tree | f1a5af853e58f91106f2eb90338cc795ae036fa2 /target-arm/op.c | |
parent | 3670669ce25ef337a6e5e99b7a97b83997c06721 (diff) |
ARM TCG conversion 7/16.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4144 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-arm/op.c')
-rw-r--r-- | target-arm/op.c | 321 |
1 files changed, 0 insertions, 321 deletions
diff --git a/target-arm/op.c b/target-arm/op.c index e714d41deb..c3150ada33 100644 --- a/target-arm/op.c +++ b/target-arm/op.c @@ -805,327 +805,6 @@ void OPPROTO op_movl_user_T0(void) FORCE_RET(); } -/* ARMv6 Media instructions. */ - -/* Note that signed overflow is undefined in C. The following routines are - careful to use unsigned types where modulo arithmetic is required. - Failure to do so _will_ break on newer gcc. */ - -/* Signed saturating arithmetic. */ - -/* Perform 16-bit signed satruating addition. */ -static inline uint16_t add16_sat(uint16_t a, uint16_t b) -{ - uint16_t res; - - res = a + b; - if (((res ^ a) & 0x8000) && !((a ^ b) & 0x8000)) { - if (a & 0x8000) - res = 0x8000; - else - res = 0x7fff; - } - return res; -} - -/* Perform 8-bit signed satruating addition. */ -static inline uint8_t add8_sat(uint8_t a, uint8_t b) -{ - uint8_t res; - - res = a + b; - if (((res ^ a) & 0x80) && !((a ^ b) & 0x80)) { - if (a & 0x80) - res = 0x80; - else - res = 0x7f; - } - return res; -} - -/* Perform 16-bit signed satruating subtraction. */ -static inline uint16_t sub16_sat(uint16_t a, uint16_t b) -{ - uint16_t res; - - res = a - b; - if (((res ^ a) & 0x8000) && ((a ^ b) & 0x8000)) { - if (a & 0x8000) - res = 0x8000; - else - res = 0x7fff; - } - return res; -} - -/* Perform 8-bit signed satruating subtraction. */ -static inline uint8_t sub8_sat(uint8_t a, uint8_t b) -{ - uint8_t res; - - res = a - b; - if (((res ^ a) & 0x80) && ((a ^ b) & 0x80)) { - if (a & 0x80) - res = 0x80; - else - res = 0x7f; - } - return res; -} - -#define ADD16(a, b, n) RESULT(add16_sat(a, b), n, 16); -#define SUB16(a, b, n) RESULT(sub16_sat(a, b), n, 16); -#define ADD8(a, b, n) RESULT(add8_sat(a, b), n, 8); -#define SUB8(a, b, n) RESULT(sub8_sat(a, b), n, 8); -#define PFX q - -#include "op_addsub.h" - -/* Unsigned saturating arithmetic. */ -static inline uint16_t add16_usat(uint16_t a, uint8_t b) -{ - uint16_t res; - res = a + b; - if (res < a) - res = 0xffff; - return res; -} - -static inline uint16_t sub16_usat(uint16_t a, uint8_t b) -{ - if (a < b) - return a - b; - else - return 0; -} - -static inline uint8_t add8_usat(uint8_t a, uint8_t b) -{ - uint8_t res; - res = a + b; - if (res < a) - res = 0xff; - return res; -} - -static inline uint8_t sub8_usat(uint8_t a, uint8_t b) -{ - if (a < b) - return a - b; - else - return 0; -} - -#define ADD16(a, b, n) RESULT(add16_usat(a, b), n, 16); -#define SUB16(a, b, n) RESULT(sub16_usat(a, b), n, 16); -#define ADD8(a, b, n) RESULT(add8_usat(a, b), n, 8); -#define SUB8(a, b, n) RESULT(sub8_usat(a, b), n, 8); -#define PFX uq - -#include "op_addsub.h" - -/* Signed modulo arithmetic. */ -#define SARITH16(a, b, n, op) do { \ - int32_t sum; \ - sum = (int16_t)((uint16_t)(a) op (uint16_t)(b)); \ - RESULT(sum, n, 16); \ - if (sum >= 0) \ - ge |= 3 << (n * 2); \ - } while(0) - -#define SARITH8(a, b, n, op) do { \ - int32_t sum; \ - sum = (int8_t)((uint8_t)(a) op (uint8_t)(b)); \ - RESULT(sum, n, 8); \ - if (sum >= 0) \ - ge |= 1 << n; \ - } while(0) - - -#define ADD16(a, b, n) SARITH16(a, b, n, +) -#define SUB16(a, b, n) SARITH16(a, b, n, -) -#define ADD8(a, b, n) SARITH8(a, b, n, +) -#define SUB8(a, b, n) SARITH8(a, b, n, -) -#define PFX s -#define ARITH_GE - -#include "op_addsub.h" - -/* Unsigned modulo arithmetic. */ -#define ADD16(a, b, n) do { \ - uint32_t sum; \ - sum = (uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b); \ - RESULT(sum, n, 16); \ - if ((sum >> 16) == 0) \ - ge |= 3 << (n * 2); \ - } while(0) - -#define ADD8(a, b, n) do { \ - uint32_t sum; \ - sum = (uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b); \ - RESULT(sum, n, 8); \ - if ((sum >> 8) == 0) \ - ge |= 3 << (n * 2); \ - } while(0) - -#define SUB16(a, b, n) do { \ - uint32_t sum; \ - sum = (uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b); \ - RESULT(sum, n, 16); \ - if ((sum >> 16) == 0) \ - ge |= 3 << (n * 2); \ - } while(0) - -#define SUB8(a, b, n) do { \ - uint32_t sum; \ - sum = (uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b); \ - RESULT(sum, n, 8); \ - if ((sum >> 8) == 0) \ - ge |= 3 << (n * 2); \ - } while(0) - -#define PFX u -#define ARITH_GE - -#include "op_addsub.h" - -/* Halved signed arithmetic. */ -#define ADD16(a, b, n) \ - RESULT(((int32_t)(int16_t)(a) + (int32_t)(int16_t)(b)) >> 1, n, 16) -#define SUB16(a, b, n) \ - RESULT(((int32_t)(int16_t)(a) - (int32_t)(int16_t)(b)) >> 1, n, 16) -#define ADD8(a, b, n) \ - RESULT(((int32_t)(int8_t)(a) + (int32_t)(int8_t)(b)) >> 1, n, 8) -#define SUB8(a, b, n) \ - RESULT(((int32_t)(int8_t)(a) - (int32_t)(int8_t)(b)) >> 1, n, 8) -#define PFX sh - -#include "op_addsub.h" - -/* Halved unsigned arithmetic. */ -#define ADD16(a, b, n) \ - RESULT(((uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b)) >> 1, n, 16) -#define SUB16(a, b, n) \ - RESULT(((uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b)) >> 1, n, 16) -#define ADD8(a, b, n) \ - RESULT(((uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b)) >> 1, n, 8) -#define SUB8(a, b, n) \ - RESULT(((uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b)) >> 1, n, 8) -#define PFX uh - -#include "op_addsub.h" - -void OPPROTO op_sel_T0_T1(void) -{ - uint32_t mask; - uint32_t flags; - - flags = env->GE; - mask = 0; - if (flags & 1) - mask |= 0xff; - if (flags & 2) - mask |= 0xff00; - if (flags & 4) - mask |= 0xff0000; - if (flags & 8) - mask |= 0xff000000; - T0 = (T0 & mask) | (T1 & ~mask); - FORCE_RET(); -} - -/* Signed saturation. */ -static inline uint32_t do_ssat(int32_t val, int shift) -{ - int32_t top; - uint32_t mask; - - shift = PARAM1; - top = val >> shift; - mask = (1u << shift) - 1; - if (top > 0) { - env->QF = 1; - return mask; - } else if (top < -1) { - env->QF = 1; - return ~mask; - } - return val; -} - -/* Unsigned saturation. */ -static inline uint32_t do_usat(int32_t val, int shift) -{ - uint32_t max; - - shift = PARAM1; - max = (1u << shift) - 1; - if (val < 0) { - env->QF = 1; - return 0; - } else if (val > max) { - env->QF = 1; - return max; - } - return val; -} - -/* Signed saturate. */ -void OPPROTO op_ssat_T1(void) -{ - T0 = do_ssat(T0, PARAM1); - FORCE_RET(); -} - -/* Dual halfword signed saturate. */ -void OPPROTO op_ssat16_T1(void) -{ - uint32_t res; - - res = (uint16_t)do_ssat((int16_t)T0, PARAM1); - res |= do_ssat(((int32_t)T0) >> 16, PARAM1) << 16; - T0 = res; - FORCE_RET(); -} - -/* Unsigned saturate. */ -void OPPROTO op_usat_T1(void) -{ - T0 = do_usat(T0, PARAM1); - FORCE_RET(); -} - -/* Dual halfword unsigned saturate. */ -void OPPROTO op_usat16_T1(void) -{ - uint32_t res; - - res = (uint16_t)do_usat((int16_t)T0, PARAM1); - res |= do_usat(((int32_t)T0) >> 16, PARAM1) << 16; - T0 = res; - FORCE_RET(); -} - -/* Dual 16-bit add. */ -static inline uint8_t do_usad(uint8_t a, uint8_t b) -{ - if (a > b) - return a - b; - else - return b - a; -} - -/* Unsigned sum of absolute byte differences. */ -void OPPROTO op_usad8_T0_T1(void) -{ - uint32_t sum; - sum = do_usad(T0, T1); - sum += do_usad(T0 >> 8, T1 >> 8); - sum += do_usad(T0 >> 16, T1 >>16); - sum += do_usad(T0 >> 24, T1 >> 24); - T0 = sum; -} - void OPPROTO op_movl_T1_r13_banked(void) { T1 = helper_get_r13_banked(env, PARAM1); |