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x64: Allow building without external unwinder.

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Required for PS4 SDK 2.5. Thanks to James Park.
This commit is contained in:
Mike Pall
2015-06-09 21:56:58 +02:00
parent 69e5342eb8
commit 72347895ed
6 changed files with 37 additions and 8 deletions
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24
src/vm_x86.dasc
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@@ -222,6 +222,9 @@
|.define CFRAME_SPACE, aword*5 // Delta for rsp (see <--).
|.macro saveregs_
| push rbx; push r15; push r14
|.if NO_UNWIND
| push r13; push r12
|.endif
| sub rsp, CFRAME_SPACE
|.endmacro
|.macro saveregs
@@ -229,15 +232,28 @@
|.endmacro
|.macro restoreregs
| add rsp, CFRAME_SPACE
|.if NO_UNWIND
| pop r12; pop r13
|.endif
| pop r14; pop r15; pop rbx; pop rbp
|.endmacro
|
|//----- 16 byte aligned,
|.if NO_UNWIND
|.define SAVE_RET, aword [rsp+aword*11] //<-- rsp entering interpreter.
|.define SAVE_R4, aword [rsp+aword*10]
|.define SAVE_R3, aword [rsp+aword*9]
|.define SAVE_R2, aword [rsp+aword*8]
|.define SAVE_R1, aword [rsp+aword*7]
|.define SAVE_RU2, aword [rsp+aword*6]
|.define SAVE_RU1, aword [rsp+aword*5] //<-- rsp after register saves.
|.else
|.define SAVE_RET, aword [rsp+aword*9] //<-- rsp entering interpreter.
|.define SAVE_R4, aword [rsp+aword*8]
|.define SAVE_R3, aword [rsp+aword*7]
|.define SAVE_R2, aword [rsp+aword*6]
|.define SAVE_R1, aword [rsp+aword*5] //<-- rsp after register saves.
|.endif
|.define SAVE_CFRAME, aword [rsp+aword*4]
|.define SAVE_PC, dword [rsp+dword*7]
|.define SAVE_L, dword [rsp+dword*6]
@@ -6119,6 +6135,10 @@ static void emit_asm_debug(BuildCtx *ctx)
"\t.byte 0x83\n\t.uleb128 0x3\n" /* offset rbx */
"\t.byte 0x8f\n\t.uleb128 0x4\n" /* offset r15 */
"\t.byte 0x8e\n\t.uleb128 0x5\n" /* offset r14 */
#if LJ_NO_UNWIND
"\t.byte 0x8d\n\t.uleb128 0x6\n" /* offset r13 */
"\t.byte 0x8c\n\t.uleb128 0x7\n" /* offset r12 */
#endif
#else
"\t.long .Lbegin\n"
"\t.long %d\n"
@@ -6154,6 +6174,7 @@ static void emit_asm_debug(BuildCtx *ctx)
"\t.align " SZPTR "\n"
".LEFDE1:\n\n", (int)ctx->codesz - fcofs);
#endif
#if !LJ_NO_UNWIND
#if (defined(__sun__) && defined(__svr4__))
#if LJ_64
fprintf(ctx->fp, "\t.section .eh_frame,\"a\",@unwind\n");
@@ -6241,8 +6262,10 @@ static void emit_asm_debug(BuildCtx *ctx)
#endif
"\t.align " SZPTR "\n"
".LEFDE3:\n\n", (int)ctx->codesz - fcofs);
#endif
#endif
break;
#if !LJ_NO_UNWIND
/* Mental note: never let Apple design an assembler.
** Or a linker. Or a plastic case. But I digress.
*/
@@ -6370,6 +6393,7 @@ static void emit_asm_debug(BuildCtx *ctx)
#endif
}
break;
#endif
default: /* Difficult for other modes. */
break;
}