Commit graph

12 commits

Author SHA1 Message Date
David Given 8379969b6f Fix an unsubtle bug where subtractions were done backwards... 2018-09-11 23:16:50 +02:00
David Given bb15c03339 Remember to preserve input registers if we're going to be reading from them
after writing to the output register.
2018-09-09 18:53:49 +02:00
David Given e88670dad4 Yikes! Turns out that FPU registers are only 32 bits wide, and doubles are
stored in pairs, just like on the PowerPC!
2018-09-09 18:25:00 +02:00
David Given 379c1a4a3c Rework floating point conversion. Bash enough of the table into workingness
that the libraries build now.
2018-09-08 22:06:38 +02:00
David Given d2c14ca44f Precisely one stack hreg gets allocated for each vreg/congruence group for
eviction; this prevents us from having to worry about moving values from stack
slot to stack slot, which is hard.
2018-09-08 18:59:55 +02:00
David Given b7a1c96986 MIPS appears to hate converting unsigneds to floats and vice versa. 2018-09-05 23:53:38 +02:00
David Given 7fbce066f8 We attempt to compile the first library function; we fail. 2018-09-05 00:13:01 +02:00
David Given 26c0228b14 The examples all compile now (probably incorrectly, and the libc doesn't
compile yet).
2018-09-04 23:55:28 +02:00
David Given 9d80756253 Lots of assembler and rule bugfixing. 2018-09-04 23:43:24 +02:00
David Given fe5ca5a85f Added li and la instructions. 2018-09-03 22:47:41 +02:00
David Given 26f9b4ceae Add in floating point support to the code generator. 2018-09-03 22:06:05 +02:00
David Given 1d6ecddcf4 The MIPS backend is still full of holes, and cut-and-pasted PowerPC code, but
is beginning to look like an actual code generator.
2018-09-02 18:57:25 +02:00