URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [or1ksim/] [cpu/] [or32/] [insnset.c] - Diff between revs 114 and 115

Rev 114	Rev 115
Line 609...	Line 609...
`SET_PARAM0(cpu_state.sprs[SPR_SR] & SPR_SR_F ? PARAM1 : PARAM2);`	`SET_PARAM0(cpu_state.sprs[SPR_SR] & SPR_SR_F ? PARAM1 : PARAM2);`
`}`	`}`
`INSTRUCTION (l_ff1) {`	`INSTRUCTION (l_ff1) {`
`SET_PARAM0(ffs(PARAM1));`	`SET_PARAM0(ffs(PARAM1));`
`}`	`}`
	`INSTRUCTION (l_fl1) {`
	`orreg_t t = (orreg_t)PARAM1;`

	`/* Reverse the word and use ffs */`
	`t = (((t & 0xaaaaaaaa) >> 1) \| ((t & 0x55555555) << 1));`
	`t = (((t & 0xcccccccc) >> 2) \| ((t & 0x33333333) << 2));`
	`t = (((t & 0xf0f0f0f0) >> 4) \| ((t & 0x0f0f0f0f) << 4));`
	`t = (((t & 0xff00ff00) >> 8) \| ((t & 0x00ff00ff) << 8));`
	`t = ffs ((t >> 16) \| (t << 16));`

	`SET_PARAM0 (0 == t ? t : 33 - t);`
	`}`
`/***** Floating point instructions *****/`	`/***** Floating point instructions *****/`
`/* Single precision */`	`/* Single precision */`
`INSTRUCTION (lf_add_s) {`	`INSTRUCTION (lf_add_s) {`
`if (config.cpu.hardfloat) {`	`if (config.cpu.hardfloat) {`
`FLOAT param0, param1, param2;`	`FLOAT param0, param1, param2;`