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PPCSPE: Save/restore cr2, cr3 and cr4 when entering/leaving VM.

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This commit is contained in:
Mike Pall
2011-08-10 22:09:14 +02:00
parent d84207b8b6
commit e8fa76feac
5 changed files with 383 additions and 367 deletions
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58
src/buildvm_ppcspe.dasc
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@@ -61,27 +61,29 @@
|.define CRET2, r4
|
|// Stack layout while in interpreter. Must match with lj_frame.h.
|.define SAVE_LR, 180(sp)
|.define CFRAME_SPACE, 176 // Delta for sp.
|// Back chain for sp: 176(sp) <-- sp entering interpreter
|.define SAVE_r31, 168(sp) // 64 bit register saves.
|.define SAVE_r30, 160(sp)
|.define SAVE_r29, 152(sp)
|.define SAVE_r28, 144(sp)
|.define SAVE_r27, 136(sp)
|.define SAVE_r26, 128(sp)
|.define SAVE_r25, 120(sp)
|.define SAVE_r24, 112(sp)
|.define SAVE_r23, 104(sp)
|.define SAVE_r22, 96(sp)
|.define SAVE_r21, 88(sp)
|.define SAVE_r20, 80(sp)
|.define SAVE_r19, 72(sp)
|.define SAVE_r18, 64(sp)
|.define SAVE_r17, 56(sp)
|.define SAVE_r16, 48(sp)
|.define SAVE_r15, 40(sp)
|.define SAVE_r14, 32(sp)
|.define SAVE_LR, 188(sp)
|.define CFRAME_SPACE, 184 // Delta for sp.
|// Back chain for sp: 184(sp) <-- sp entering interpreter
|.define SAVE_r31, 176(sp) // 64 bit register saves.
|.define SAVE_r30, 168(sp)
|.define SAVE_r29, 160(sp)
|.define SAVE_r28, 152(sp)
|.define SAVE_r27, 144(sp)
|.define SAVE_r26, 136(sp)
|.define SAVE_r25, 128(sp)
|.define SAVE_r24, 120(sp)
|.define SAVE_r23, 112(sp)
|.define SAVE_r22, 104(sp)
|.define SAVE_r21, 96(sp)
|.define SAVE_r20, 88(sp)
|.define SAVE_r19, 80(sp)
|.define SAVE_r18, 72(sp)
|.define SAVE_r17, 64(sp)
|.define SAVE_r16, 56(sp)
|.define SAVE_r15, 48(sp)
|.define SAVE_r14, 40(sp)
|.define SAVE_CR, 36(sp)
|.define UNUSED1, 32(sp)
|.define SAVE_ERRF, 28(sp) // 32 bit C frame info.
|.define SAVE_NRES, 24(sp)
|.define SAVE_CFRAME, 20(sp)
@@ -97,16 +99,16 @@
|.macro saveregs
| stwu sp, -CFRAME_SPACE(sp)
| save_ r14; save_ r15; save_ r16; save_ r17; save_ r18; save_ r19
| mflr r0
| mflr r0; mfcr r12
| save_ r20; save_ r21; save_ r22; save_ r23; save_ r24; save_ r25
| stw r0, SAVE_LR
| stw r0, SAVE_LR; stw r12, SAVE_CR
| save_ r26; save_ r27; save_ r28; save_ r29; save_ r30; save_ r31
|.endmacro
|
|.macro restoreregs
| lwz r0, SAVE_LR
| lwz r0, SAVE_LR; lwz r12, SAVE_CR
| rest_ r14; rest_ r15; rest_ r16; rest_ r17; rest_ r18; rest_ r19
| mtlr r0
| mtlr r0; mtcrf 0x38, r12
| rest_ r20; rest_ r21; rest_ r22; rest_ r23; rest_ r24; rest_ r25
| rest_ r26; rest_ r27; rest_ r28; rest_ r29; rest_ r30; rest_ r31
| addi sp, sp, CFRAME_SPACE
@@ -3656,7 +3658,8 @@ static void emit_asm_debug(BuildCtx *ctx)
"\t.long .Lbegin\n"
"\t.long %d\n"
"\t.byte 0xe\n\t.uleb128 %d\n"
"\t.byte 0x11\n\t.uleb128 65\n\t.sleb128 -1\n",
"\t.byte 0x11\n\t.uleb128 65\n\t.sleb128 -1\n"
"\t.byte 0x5\n\t.uleb128 70\n\t.sleb128 37\n",
(int)ctx->codesz, CFRAME_SIZE);
for (i = 14; i <= 31; i++)
fprintf(ctx->fp,
@@ -3693,7 +3696,8 @@ static void emit_asm_debug(BuildCtx *ctx)
"\t.long %d\n"
"\t.uleb128 0\n" /* augmentation length */
"\t.byte 0xe\n\t.uleb128 %d\n"
"\t.byte 0x11\n\t.uleb128 65\n\t.sleb128 -1\n",
"\t.byte 0x11\n\t.uleb128 65\n\t.sleb128 -1\n"
"\t.byte 0x5\n\t.uleb128 70\n\t.sleb128 37\n",
(int)ctx->codesz, CFRAME_SIZE);
for (i = 14; i <= 31; i++)
fprintf(ctx->fp,