diff options
author | Brian Paul <brian.paul@tungstengraphics.com> | 2008-09-10 17:11:48 -0600 |
---|---|---|
committer | Brian Paul <brian.paul@tungstengraphics.com> | 2008-09-11 10:39:28 -0600 |
commit | ee582fd3a7a9ddbcb5595249201cf213a6c6f014 (patch) | |
tree | a2212fc4617ed54c25c7c21451420cea20021d0e /src/gallium | |
parent | 04ae4fba3c0a656cf2747fc994b99f99576d0e2b (diff) |
gallium: assorted additions and fixes to Cell SPE rtasm code
Fix incorrect opcode for fsmbi.
Added "macro" functions for loading floats/ints, register complement, zero, move.
Added #defines for return address and stack pointer registers.
Added assertions to check that the instruction buffer doesn't overflow.
Diffstat (limited to 'src/gallium')
-rw-r--r-- | src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c | 88 | ||||
-rw-r--r-- | src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h | 38 |
2 files changed, 105 insertions, 21 deletions
diff --git a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c index fe5beba456..61010e4333 100644 --- a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c +++ b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.c @@ -151,8 +151,8 @@ static void emit_RR(struct spe_function *p, unsigned op, unsigned rT, inst.inst.rB = rB; inst.inst.rA = rA; inst.inst.rT = rT; - *p->csr = inst.bits; - p->csr++; + p->store[p->num_inst++] = inst.bits; + assert(p->num_inst <= p->max_inst); } @@ -165,8 +165,8 @@ static void emit_RRR(struct spe_function *p, unsigned op, unsigned rT, inst.inst.rB = rB; inst.inst.rA = rA; inst.inst.rC = rC; - *p->csr = inst.bits; - p->csr++; + p->store[p->num_inst++] = inst.bits; + assert(p->num_inst <= p->max_inst); } @@ -178,8 +178,8 @@ static void emit_RI7(struct spe_function *p, unsigned op, unsigned rT, inst.inst.i7 = imm; inst.inst.rA = rA; inst.inst.rT = rT; - *p->csr = inst.bits; - p->csr++; + p->store[p->num_inst++] = inst.bits; + assert(p->num_inst <= p->max_inst); } @@ -192,8 +192,8 @@ static void emit_RI8(struct spe_function *p, unsigned op, unsigned rT, inst.inst.i8 = imm; inst.inst.rA = rA; inst.inst.rT = rT; - *p->csr = inst.bits; - p->csr++; + p->store[p->num_inst++] = inst.bits; + assert(p->num_inst <= p->max_inst); } @@ -206,8 +206,8 @@ static void emit_RI10(struct spe_function *p, unsigned op, unsigned rT, inst.inst.i10 = imm; inst.inst.rA = rA; inst.inst.rT = rT; - *p->csr = inst.bits; - p->csr++; + p->store[p->num_inst++] = inst.bits; + assert(p->num_inst <= p->max_inst); } @@ -218,8 +218,8 @@ static void emit_RI16(struct spe_function *p, unsigned op, unsigned rT, inst.inst.op = op; inst.inst.i16 = imm; inst.inst.rT = rT; - *p->csr = inst.bits; - p->csr++; + p->store[p->num_inst++] = inst.bits; + assert(p->num_inst <= p->max_inst); } @@ -230,8 +230,8 @@ static void emit_RI18(struct spe_function *p, unsigned op, unsigned rT, inst.inst.op = op; inst.inst.i18 = imm; inst.inst.rT = rT; - *p->csr = inst.bits; - p->csr++; + p->store[p->num_inst++] = inst.bits; + assert(p->num_inst <= p->max_inst); } @@ -307,8 +307,9 @@ void _name (struct spe_function *p, int imm) \ void spe_init_func(struct spe_function *p, unsigned code_size) { p->store = align_malloc(code_size, 16); - p->csr = p->store; - + p->num_inst = 0; + p->max_inst = code_size / SPE_INST_SIZE; + /* Conservatively treat R0 - R2 and R80 - R127 as non-volatile. */ p->regs[0] = ~7; @@ -318,11 +319,11 @@ void spe_init_func(struct spe_function *p, unsigned code_size) void spe_release_func(struct spe_function *p) { + assert(p->num_inst <= p->max_inst); if (p->store != NULL) { align_free(p->store); } p->store = NULL; - p->csr = NULL; } @@ -337,6 +338,7 @@ int spe_allocate_available_register(struct spe_function *p) const uint64_t mask = (1ULL << (i % 64)); const unsigned idx = i / 64; + assert(idx < 2); if ((p->regs[idx] & mask) != 0) { p->regs[idx] &= ~mask; return i; @@ -371,6 +373,8 @@ void spe_release_register(struct spe_function *p, int reg) const unsigned idx = reg / 64; const unsigned bit = reg % 64; + assert(idx < 2); + assert(reg < SPE_NUM_REGS); assert((p->regs[idx] & (1ULL << bit)) == 0); @@ -458,4 +462,54 @@ EMIT_R (spe_mfspr, 0x00c); EMIT_R (spe_mtspr, 0x10c); #endif + +/** + ** Helper / "macro" instructions. + ** Use somewhat verbose names as a reminder that these aren't native + ** SPE instructions. + **/ + + +void +spe_load_float(struct spe_function *p, unsigned rT, float x) +{ + union { + float f; + unsigned u; + } bits; + bits.f = x; + spe_ilhu(p, rT, bits.u >> 16); + spe_iohl(p, rT, bits.u & 0xffff); +} + + +void +spe_load_int(struct spe_function *p, unsigned rT, int i) +{ + spe_ilhu(p, rT, i >> 16); + spe_iohl(p, rT, i & 0xffff); +} + + +void +spe_complement(struct spe_function *p, unsigned rT) +{ + spe_nor(p, rT, rT, rT); +} + + +void +spe_move(struct spe_function *p, unsigned rT, unsigned rA) +{ + spe_ori(p, rT, rA, 0); +} + + +void +spe_zero(struct spe_function *p, unsigned rT) +{ + spe_xor(p, rT, rT, rT); +} + + #endif /* GALLIUM_CELL */ diff --git a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h index 7dd754ba77..dee8c55c4a 100644 --- a/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h +++ b/src/gallium/auxiliary/rtasm/rtasm_ppc_spe.h @@ -25,6 +25,7 @@ /** * \file * Real-time assembly generation interface for Cell B.E. SPEs. + * For details, see /opt/cell/sdk/docs/arch/SPU_ISA_v1.2_27Jan2007_pub.pdf * * \author Ian Romanick <idr@us.ibm.com> */ @@ -38,11 +39,18 @@ /** number of general-purpose SIMD registers */ #define SPE_NUM_REGS 128 +/** Return Address register */ +#define SPE_REG_RA 0 + +/** Stack Pointer register */ +#define SPE_REG_SP 1 + + struct spe_function { - uint32_t *store; /**< instruction buffer */ - uint32_t *csr; /**< next free pos in instruction buffer */ - const char *fn; /**< unused */ + uint32_t *store; /**< instruction buffer */ + uint num_inst; + uint max_inst; /** * Mask of used / unused registers @@ -123,7 +131,8 @@ EMIT_RI16(spe_ilhu, 0x082); EMIT_RI16(spe_il, 0x081); EMIT_RI18(spe_ila, 0x021); EMIT_RI16(spe_iohl, 0x0c1); -EMIT_RI16(spe_fsmbi, 0x0c5); +EMIT_RI16(spe_fsmbi, 0x065); + /* Integer and logical instructions @@ -275,6 +284,27 @@ extern void spe_bihnz(struct spe_function *p, unsigned rT, unsigned rA, int d, int e); +/** Load/splat immediate float into rT. */ +extern void +spe_load_float(struct spe_function *p, unsigned rT, float x); + +/** Load/splat immediate int into rT. */ +extern void +spe_load_int(struct spe_function *p, unsigned rT, int i); + +/** Complement/invert all bits in rT. */ +extern void +spe_complement(struct spe_function *p, unsigned rT); + +/** rT = rA. */ +extern void +spe_move(struct spe_function *p, unsigned rT, unsigned rA); + +/** rT = {0,0,0,0}. */ +extern void +spe_zero(struct spe_function *p, unsigned rT); + + /* Floating-point instructions */ EMIT_RR (spe_fa, 0x2c4); |