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[Decomp] Decompile gstring (#267)

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* decompile gstring

* update

* Update code_status.md

* Update code_status.md

* decompile gstate

* add test for states, hope it passes

* also test throw and catch xmms

* update doc
This commit is contained in:
water111
2021-02-16 20:37:48 -05:00
committed by GitHub
parent aa9bcd07f4
commit f1a93886e7
29 changed files with 2505 additions and 396 deletions
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test/decompiler/test_FormExpressionBuild.cpp
+152 -4
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@@ -2074,12 +2074,9 @@ TEST_F(FormRegressionTest, ExprPrintl) {
" daddiu sp, sp, 32";
std::string type = "(function object object)";
// todo - I think this is a sign that we're unscrambling method calls in the wrong order.
// but I want to wait for a less confusing example before making a change.
std::string expected =
"(begin\n"
" (set! a0-1 arg0)\n"
" ((method-of-type (rtype-of a0-1) print) a0-1)\n"
" ((method-of-type (rtype-of a0-1) print) arg0)\n"
" (format (quote #t) \"~%\")\n"
" arg0\n"
" )";
@@ -2355,4 +2352,155 @@ TEST_F(FormRegressionTest, ExprStopwatchElapsedSeconds) {
std::string expected = "(begin (set! v1-0 (abs arg0)) (* (l.f L20) (the float v1-0)))";
test_with_expr(func, type, expected, false, "");
}
TEST_F(FormRegressionTest, ExprCopyStringString) {
std::string func =
" sll r0, r0, 0\n"
"L161:\n"
" daddiu v1, a0, 4\n"
" daddiu a1, a1, 4\n"
" beq r0, r0, L163\n"
" sll r0, r0, 0\n"
"L162:\n"
" lbu a2, 0(a1)\n"
" sb a2, 0(v1)\n"
" daddiu v1, v1, 1\n"
" daddiu a1, a1, 1\n"
"L163:\n"
" lbu a2, 0(a1)\n"
" bne a2, r0, L162\n"
" sll r0, r0, 0\n"
" or a1, s7, r0\n"
" sb r0, 0(v1)\n"
" or v0, a0, r0\n"
" jr ra\n"
" daddu sp, sp, r0";
std::string type = "(function string string string)";
std::string expected =
"(begin\n"
" (set! v1-0 (-> arg0 data))\n"
" (set! a1-1 (-> arg1 data))\n"
" (while\n"
" (nonzero? (-> a1-1 0))\n"
" (set! (-> v1-0 0) (-> a1-1 0))\n"
" (set! v1-0 (&-> v1-0 1))\n"
" (set! a1-1 (&-> a1-1 1))\n"
" )\n"
" (set! (-> v1-0 0) 0)\n"
" arg0\n"
" )";
test_with_expr(func, type, expected, false, "");
}
TEST_F(FormRegressionTest, StringLt) {
std::string func =
" sll r0, r0, 0\n"
"L91:\n"
" daddiu sp, sp, -64\n"
" sd ra, 0(sp)\n"
" sq s4, 16(sp)\n"
" sq s5, 32(sp)\n"
" sq gp, 48(sp)\n"
" or gp, a0, r0\n"
" or s5, a1, r0\n"
" or a0, gp, r0\n"
" lw v1, string(s7)\n"
" lwu t9, 32(v1)\n"
" jalr ra, t9\n"
" sll v0, ra, 0\n"
" or v1, v0, r0\n"
" or s4, v1, r0\n"
" or a0, s5, r0\n"
" lw v1, string(s7)\n"
" lwu t9, 32(v1)\n"
" jalr ra, t9\n"
" sll v0, ra, 0\n"
" or v1, v0, r0\n"
" slt a0, s4, v1\n"
" movz s4, v1, a0\n"
" addiu v1, r0, 0\n"
" beq r0, r0, L95\n"
" sll r0, r0, 0\n"
"L92:\n"
" daddu a0, v1, gp\n"
" lbu a0, 4(a0)\n"
" daddu a1, v1, s5\n"
" lbu a1, 4(a1)\n"
" sltu a0, a0, a1\n"
" beq a0, r0, L93\n"
" or a0, s7, r0\n"
" daddiu v1, s7, #t\n"
" or v0, v1, r0\n"
" beq r0, r0, L96\n"
" sll r0, r0, 0\n"
" or v1, r0, r0\n"
" beq r0, r0, L94\n"
" sll r0, r0, 0\n"
"L93:\n"
" daddu a0, v1, s5\n"
" lbu a0, 4(a0)\n"
" daddu a1, v1, gp\n"
" lbu a1, 4(a1)\n"
" sltu a0, a0, a1\n"
" beq a0, r0, L94\n"
" or a0, s7, r0\n"
" or v0, s7, r0\n"
" beq r0, r0, L96\n"
" sll r0, r0, 0\n"
" or v1, r0, r0\n"
"L94:\n"
" daddiu v1, v1, 1\n"
"L95:\n"
" slt a0, v1, s4\n"
" bne a0, r0, L92\n"
" sll r0, r0, 0\n"
" or v1, s7, r0\n"
" or v1, s7, r0\n"
" or v0, s7, r0\n"
"L96:\n"
" ld ra, 0(sp)\n"
" lq gp, 48(sp)\n"
" lq s5, 32(sp)\n"
" lq s4, 16(sp)\n"
" jr ra\n"
" daddiu sp, sp, 64";
std::string type = "(function string string symbol)";
std::string expected =
"(begin\n"
" (set!\n"
" s4-1\n"
" (min\n"
" ((method-of-type string length) arg0)\n"
" ((method-of-type string length) arg1)\n"
" )\n"
" )\n"
" (set! v1-4 0)\n"
" (while\n"
" (< v1-4 s4-1)\n"
" (cond\n"
" ((< (-> arg0 data v1-4) (-> arg1 data v1-4)) (return (quote #t)))\n"
" ((< (-> arg1 data v1-4) (-> arg0 data v1-4)) (return (quote #f)))\n"
" )\n"
" (set! v1-4 (+ v1-4 1))\n"
" )\n"
" (quote #f)\n"
" )";
test_with_expr(func, type, expected, false, "");
}