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| author | Richard Henderson <rth@twiddle.net> | 2011-04-28 08:45:05 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2011-04-28 08:45:05 -0700 |
| commit | ac57e53396490404cc27dc894e470269c07564f0 (patch) | |
| tree | 0fa3aab169081f1b55f0c36b5297c39c9f72e3e7 | |
| parent | 2337817db11065e3b70f7c2f4e0859f2fe5e9225 (diff) | |
| download | qemu-palcode-ac57e53396490404cc27dc894e470269c07564f0.tar.gz | |
Rearrange Cserve. Add QMU clock/alarm related entry points.
| -rw-r--r-- | pal.S | 60 | ||||
| -rw-r--r-- | pal.h | 2 |
2 files changed, 46 insertions, 16 deletions
@@ -445,33 +445,61 @@ ENDFN CallPal_OpcDec08 */ ORG_CALL_PAL_PRIV(0x09) CallPal_Cserve: - // ??? For SRM compatibility, use 52/53 for these. Anyone know what - // other "standard" SRM Cserve entry points are? Certainly we don't - // want to be compatible with MILO, which puts the selector at A2. - cmpeq a0, 52, v0 - bne v0, Cserve_Ena - cmpeq a0, 53, v0 - bne v0, Cserve_Dis - - // All the rest of the Cserve entry points are compressed from 1. - cmpeq a0, 1, v0 - bne v0, Cserve_Ldqp - cmpeq a0, 2, v0 - bne v0, Cserve_Stqp - - hw_rei + // Most of the entries are densely clustered around 0. + mov 0, v0 + cmpule a0, 6, p0 + cmovne p0, a0, v0 + br p0, 1f +1: lda p0, Cserve_Table-1b(p0) + s8addq v0, p0, p0 + jmp $31, (p0), 0 ENDFN CallPal_Cserve .text 1 + .align 3 +/* Note that the entries in the following table are all 2 insns. + The first entry is unused, and is also where all out-of-range + commands are vectored. */ +Cserve_Table: + br CallPal_Cserve_Cont + nop Cserve_Ldqp: ldq_p v0, 0(a1) hw_rei ENDFN Cserve_Ldqp - Cserve_Stqp: stq_p a2, 0(a1) hw_rei ENDFN Cserve_Stqp +Cserve_Get_Wall_Time: + mfpr v0, qemu_walltime + hw_rei +ENDFN Cserve_Get_Wall_Time +Cserve_Get_Alarm: + mfpr v0, qemu_alarm + hw_rei +ENDFN Cserve_Get_Alarm +Cserve_Set_Alarm_Rel: + // Cheating here: create the absolute time and fall thru. + mfpr p0, qemu_walltime + addq p0, a1, a1 +ENDFN Cserve_Set_Alarm_Rel +Cserve_Set_Alarm_Abs: + mtpr a1, qemu_alarm + hw_rei +ENDFN Cserve_Set_Alarm_Abs + +CallPal_Cserve_Cont: + // ??? For SRM compatibility and their use within Linux, use 52/53 + // for these. Anyone know what other "standard" SRM Cserve entry + // points are? Certainly we don't want to be compatible with MILO, + // which puts the selector at A2. + cmpeq a0, 52, v0 + bne v0, Cserve_Ena + cmpeq a0, 53, v0 + bne v0, Cserve_Dis + hw_rei +ENDFN CallPal_Cserve_Cont .previous /* @@ -87,6 +87,8 @@ #define qemu_tbis 254 #define qemu_wait 253 #define qemu_halt 252 +#define qemu_alarm 251 +#define qemu_walltime 250 /* PALcode uses of the private storage slots. */ #define ptEntUna pt0 |