diff options
| author | Andrew Waterman <waterman@s141.Millennium.Berkeley.EDU> | 2010-08-04 17:04:24 -0700 |
|---|---|---|
| committer | Andrew Waterman <waterman@s141.Millennium.Berkeley.EDU> | 2010-08-04 17:04:24 -0700 |
| commit | e0d20b2e2de069c6714f48eb36eec1ad02845f4c (patch) | |
| tree | d687f2eeca1bd3e7e227a32912f28a9cf9f432d3 /entry.S | |
| parent | b93785370d0be893e0a484ec22f1365db184dcce (diff) | |
| download | pk-e0d20b2e2de069c6714f48eb36eec1ad02845f4c.zip pk-e0d20b2e2de069c6714f48eb36eec1ad02845f4c.tar.gz pk-e0d20b2e2de069c6714f48eb36eec1ad02845f4c.tar.bz2 | |
[xcc,pk,sim] Added first part of FP support
In particular, FP loads, stores, and moves now work.
Diffstat (limited to 'entry.S')
| -rw-r--r-- | entry.S | 36 |
1 files changed, 26 insertions, 10 deletions
@@ -1,5 +1,6 @@ .text - .set noat + .set noat + .ent save_tf save_tf: # write the trap frame onto the stack # save gprs sd $1,8($k1) @@ -39,11 +40,15 @@ save_tf: # write the trap frame onto the stack mfpcr $t0,$2 # badvaddr sd $t0,272($k1) jr $ra + .end save_tf - .global pop_tf + .globl pop_tf + .ent pop_tf pop_tf: # write the trap frame onto the stack # restore gprs - di + ld $t0,256($a0) # restore sr, which should disable interrupts + mtpcr $t0,$0 + move $k0,$a0 ld $1,8($k0) ld $2,16($k0) @@ -79,6 +84,7 @@ pop_tf: # write the trap frame onto the stack ld $k0,264($k0) mtpcr $k0,$1 eret + .end pop_tf @@ -95,16 +101,26 @@ pop_tf: # write the trap frame onto the stack .align 12 .global trap_table + .ent trap_table trap_table: - TRAP_TABLE_ENTRY(unhandled_trap) - TRAP_TABLE_ENTRY(unhandled_trap) - TRAP_TABLE_ENTRY(unhandled_trap) - TRAP_TABLE_ENTRY(unhandled_trap) - TRAP_TABLE_ENTRY(unhandled_trap) - TRAP_TABLE_ENTRY(unhandled_trap) + TRAP_TABLE_ENTRY(handle_illegal_instruction) + TRAP_TABLE_ENTRY(handle_privileged_instruction) + TRAP_TABLE_ENTRY(handle_fp_disabled) + TRAP_TABLE_ENTRY(handle_badtrap) + TRAP_TABLE_ENTRY(handle_misaligned_fetch) + TRAP_TABLE_ENTRY(handle_misaligned_ldst) + TRAP_TABLE_ENTRY(handle_fault_fetch) + TRAP_TABLE_ENTRY(handle_fault_ldst) TRAP_TABLE_ENTRY(handle_syscall) TRAP_TABLE_ENTRY(handle_breakpoint) - .align 12 + TRAP_TABLE_ENTRY(handle_badtrap) + TRAP_TABLE_ENTRY(handle_badtrap) + TRAP_TABLE_ENTRY(handle_badtrap) + TRAP_TABLE_ENTRY(handle_badtrap) + TRAP_TABLE_ENTRY(handle_badtrap) + TRAP_TABLE_ENTRY(handle_badtrap) + .align 12 + .end trap_table .bss .global stack_bot |