diff options
| -rw-r--r-- | src/gallium/drivers/cell/ppu/cell_gen_fp.c | 45 |
1 files changed, 39 insertions, 6 deletions
diff --git a/src/gallium/drivers/cell/ppu/cell_gen_fp.c b/src/gallium/drivers/cell/ppu/cell_gen_fp.c index fd12af19cef..8d2d4f2a0f2 100644 --- a/src/gallium/drivers/cell/ppu/cell_gen_fp.c +++ b/src/gallium/drivers/cell/ppu/cell_gen_fp.c @@ -1105,7 +1105,10 @@ emit_function_call(struct codegen *gen, uint addr; int ch; - assert(num_args <= 2); + /* XXX temporary value */ + const int frameSize = 64; /* stack frame (activation record) size */ + + assert(num_args <= 3); /* lookup function address */ { @@ -1119,7 +1122,9 @@ emit_function_call(struct codegen *gen, assert(addr && "spu function not found"); } - sprintf(comment, "CALL %s:", funcname); + addr /= 4; /* discard 2 least significant bits */ + + snprintf(comment, sizeof(comment), "CALL %s:", funcname); spe_comment(gen->f, -4, comment); for (ch = 0; ch < 4; ch++) { @@ -1131,12 +1136,40 @@ emit_function_call(struct codegen *gen, s_regs[a] = get_src_reg(gen, ch, &inst->FullSrcRegisters[a]); } - /* XXX not done */ - (void) s_regs; - (void) d_reg; + /* Basically: + * save registers on stack + * move parameters to registers 3, 4, 5... + * call function + * save return value (reg 3) + * restore registers from stack + */ + + /* XXX hack: load first function param */ + spe_move(gen->f, 3, s_regs[0]); + + /* save $lr on stack # stqd $lr,16($sp) */ + spe_stqd(gen->f, SPE_REG_RA, SPE_REG_SP, 16); + /* save stack pointer # stqd $sp,-frameSize($sp) */ + spe_stqd(gen->f, SPE_REG_SP, SPE_REG_SP, -frameSize); + + /* XXX save registers to stack here */ + + /* adjust stack pointer # ai $sp,$sp,-frameSize */ + spe_ai(gen->f, SPE_REG_SP, SPE_REG_SP, -frameSize); + + /* branch to function, save return addr */ + spe_brasl(gen->f, SPE_REG_RA, addr); + + /* restore stack pointer # ai $sp,$sp,frameSize */ + spe_ai(gen->f, SPE_REG_SP, SPE_REG_SP, frameSize); + + /* XXX restore registers from stack here */ - spe_bisl(gen->f, SPE_REG_RA, addr, 0, 0); /* XXX untested! */ + /* restore $lr # lqd $lr,16($sp) */ + spe_lqd(gen->f, SPE_REG_RA, SPE_REG_SP, 16); + /* XXX hack: save function's return value */ + spe_move(gen->f, d_reg, 3); store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]); free_itemps(gen); |